Author: "G. Maehlum" - Searchworks@Jio Institute Digital Library Search Results

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1. Measurement of the lifetime of tau-lepton

Author: U. Mjoernmark, Edoardo Castelli, F. Pierre, P. Allen, G. W. Van Apeldoorn, R. J. Apsimon, L. Ventura, V. Ruhlmann, Roland Horisberger, L. Bugge, D. Z. Toet, G. Hamel de Monchenault, Andrey Korytov, G. Ekspong, Itzhak Roditi, Gueorgui Chelkov, Pierre Juillot, M. De Beer, M. Bonesini, Y. Sacquin, Josef Strauss, M.A. Lopez Aguera, Francesca Romana Cavallo, Hans Muller, B. Koene, J.A.M.A. Buytaert, W. Venus, L. Di Ciaccio, Jan Krolikowski, N. N. Khovanski, Mitchell Wayne, M. S. Bilenky, G. Tristam, L.J. Carroll, W. Bartl, R. Pain, P. N. Bogolubov, M. J. Bates, J. A. Valls Ferrer, Giovanni Darbo, Christine Kourkoumelis, P. Siegrist, V. V. Lapin, N. Crosland, S. Simonetti, M. Begalli, E. Dahl-Jensen, Paolo Morettini, J. G. Loken, C. De Clercq, Klaus Hamacher, J. P. Laugier, Natale Demaria, R. Lucock, M. Richardson, G. Meola, Toralf Bernhard Skaali, M. Boratav, D. Gamba, P. Beilliere, M. Battaglia, T. Bolognese, W. J. Murray, R. Strub, J-C. Marin, Spyros Tzamarias, G. Cosme, A. Perrotta, G. Borisov, George Kalkanis, P. B. Renton, G. Voulgaris, M. Pimenta, B. A. Khomenko, M. Baubillier, V. Canale, S. Gumenyuk, R. A. Brenner, Stavros Maltezos, M. Bonapart, O. Barring, Y. Dufour, P. D. Dauncey, Sandor Czellar, D. C. Fries, Patrick Jarry, S. J. Alvsvaag, C. Vander Velde, N. De Groot, G. Rinaudo, G. Sette, A. Elliot Peisert, A. Stocchi, Francesco Navarria, J. Zúñiga, P. Astier, W. Bonivento, P. Weilhammer, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, G. Vegni, N. Brummer, J. Bjarne, P. O. Hulth, T. Tabarelli, P. Van Dam, M. Davenport, G. Polok, A. Ruiz, Winfried Mitaroff, E. Lieb, P. Antilogus, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, G. Matthiae, Marta Calvi, P. Delpierre, I. Herbst, M. Matveev, R. Mc Nulty, I. Lippi, W. Kucewicz, E. K. Johansson, J. Pyyhtia, Geoffrey Smith, D. Johnson, Louis Lyons, W. Klempt, Renato Turchetta, H. De Boeck, S. Tavernier, G. Wormser, E. Daubie, G. E. Theodosiou, Mogens Dam, D. Fassouliotis, Ariella Cattai, F. Couchot, M. Kopf, M. Tyndel, S. C. Blyth, O. Pingot, G. Wilkinson, M.D.M. De Fez Laso, Juan Fuster, Jacques Lemonne, J. Sanchez, C. Bosio, E.N. Tsyganov, J. H. Wickens, Jose Luis Contreras, T. Kreuzberger, J. Derkaoui, S. Braibant, S. Dagoret, F. Stichelbaut, D. Zavrtanik, A. Tilquin, S. O. Holmgren, L. S. Vertogradov, J. Maillard, M. T. Trainor, P. Vaz, R. Sosnowski, O. Ullaland, Leif J. Jönsson, G. Myatt, F. Adami, V. G. Timofeev, A. G. Frodesen, Pawel Jalocha, Barry King, G. Smadja, L. Mathis, D. Husson, Ugo Gasparini, A. Pullia, J.M. Gago, D. Bertrand, J. Timmermans, I. A. Tyapkin, B.D. Hyams, T. S. Spassoff, Torsten Paul Ake Åkesson, Demetrios Loukas, R. Keranen, Philippe Charpentier, Francisco Matorras, N. Yamdagni, U. Trevisan, H. Furstenau, R. Frühwirth, L. O. Eek, R. C. Shellard, Josef Hrubec, A. M. Segar, A. G. Olshevski, B. Boštjančič, V. Perevozchikov, Theodora Papadopoulou, B. Korzen, Jon Christopher Wikne, C. Defoix, E. I. Rosenberg, A. Campion, S. Volponi, B. Dalmagne, F. Fulda-Quenzer, H. P. Borner, Stefan Schael, A. Lipniacka, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, Tiziano Camporesi, A.J. Camacho Rozas, Abdenour Lounis, M.-H. Gros, Laurent Chevalier, M. Fernandez Alonso, D. Radojicic, V. Obraztsov, Jan Ridky, P. Folegati, Z. Hajduk, K. Kurvinen, Maciej Górski, W. Ruckstuhl, Borge Svane Nielsen, J. J. Lozano, Guido Barbiellini, R. Zukanovich Funchal, B. Franek, H. Wahlen, Ariel Goobar, E. Graziani, P. S. Iversen, F. Fontanelli, Maria Roberta Monge, A. Zalewska, Krzysztof Doroba, N. G. Redaelli, R. Moeller, A. Hakansson, Chiara Meroni, J. H. Koehne, Marco Bozzo, T. Hofmokl, Marek Szczekowski, J. M. Brunet, H. Foeth, Roberto Cirio, I. Roncagliolo, L. K. Resvanis, J. E. Hooper, J. Guy, P. Lutz, W. Krupinski, W. T. Meyer, P. V. Chliapnikov, Tord Ekelof, H. Staeck, D. Benedic, P. Abreu, P. Borgeaud, J. P. Gerber, Tim Adye, E. Rosso, H. Klein, P. Beltran, Peter Kluit, F. Naraghi, P. Frenkiel, K. H. Becks, E. Vallazza, Milos Lokajicek, J. Cuevas Maestro, A. Chan, B. Ueberschaer, Massimo Caccia, H. J. Hilke, D. J. Holthuizen, F. Waldner, S. Haider, Antonio Ferrer, Tuure Tuuva, F. Simonetto, F. Kapusta, K. W. Glitza, Clara Troncon, G. Leder, B. Åsman, W.S.C. Williams, J.-E. Augustin, F. Ledroit, E.N. Gazos, M. Schaeffer, B. Loerstad, Eilam Gross, B. Nijjhar, E. Menichetti, Stefano Ragazzi, K. Furnival, C. Walck, A. De Angelis, P. Collins, D. Delikaris, Vladimir Nikolaenko, C. Caso, J. Drees, Fernand Grard, A. Passeri, D. Crennell, F. Mandl, T. Todorov, H. Burmeister, N. van Eijndhoven, J. Werner, L. Tortora, F. J. Harris, C. De La Vaissiere, C. J. Beeston, Daniel Bloch, F. Cao, Ahmimed Ouraou, Wolfgang Adam, M. L. Turluer, B. W. Heck, M. Mazzucato, P. Szymanski, Robert S. Brown, V.M. Golovatyuk, Carlos Lacasta, K. D. Brand, N. I. Zimin, Krzysztof A. Rybicki, H. B. Crawley, D. Isenhower, A. Pinsent, D. Wormald, K. Woschnagg, A. De Min, Joao Varela, V. Falaleev, M. Dracos, J. J. Gomez Y Cadenas, V. Chorowicz, D. Reid, Yu. Belokopytov, S. Squarcia, Matteo Pegoraro, E. C. Katsoufis, G. Gopal, E. G. Anassontzis, R. Holmes, H. Saarikko, M. Voutilainen, G. Grosdidier, W. Dulinski, K. A. J. Forbes, S. D. Hodgson, S. Ueberschaer, G. Galeazzi, J. P. Engel, P. Bambade, K. Moenig, M. V. Castillo Gimenez, E. J. Sanchez, M. Crozon, T. Buran, Gianni Zumerle, P. Roudeau, Alessandra Romero, J. Kesteman, A. Maltezos, G. Damgaard, F. Verbeure, C. Bricman, M. A E Schyns, Martino Margoni, P. F. Honore, E. Fokitis, G. D. Alekseev, Olga Botner, M. Michelotto, V. Gracco, Pavlos Ioannou, Krzysztof Korcyl, A. N. Sissakian, R. Llosa, Claudia J. Stubenrauch, Carmen García, B. Jean-Marie, Mario Sannino, Eleuterio Spiriti, P. Poropat, Andromachi Tsirou, M. A. Houlden, M. Mc Cubbin, K. Hultqvist, Georgios Stavropoulos, P. David, Andre Augustinus, W. K. Van Doninck, F. Richard, W.-D. Apel, C. Matteuzzi, M. Hahn, D. Vilanova, S. Almehed, F. Hahn, S. Marti, U. Kruener-Marquis, Paolo Ronchese, N. J. Kjaer, Paula Eerola, Lucio Cerrito, M. A. Winter, G. E. Kalmus, H. Palka, G. Skjevling, J. W. Lamsa, F. Barao, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, E. Higon, R. Seufert, H. Herr, F. Scuri, A. M. Wetherell, L. G. Tkatchev, Jmv Garcia, L. Lanceri, A. Firestone, M. Vollmer, U. Rossi, Paolo Giacomelli, R. Sekulin, S. Delorme, M. Zito, J. J. Hernandez, T. Moa, G. Maehlum, B. Grossetete, Allan Hallgren, Giovanni Valenti, Antonio Baroncelli, Guenakh Mitselmakher, Fares Djama, José Salt, L. Vibert, M. Jonker, William Trischuk, A. Markou, Cristian Stanescu, P. Branchini, H. Schneider, R. Lauhakangas, Tiziano Rovelli, Mikael Berggren, G. Kantardjian, M. Sessa, M. Los, V. Lepeltier, M. Donszelmann, H. Forsbach, C. Ronnqvist, Paolo Checchia, G. Zhang, A. P. Ostankov, Ph. Gavillet, R. Gokieli, Dietrich Liko, P. Privitera, V. Kostukhin, R. Zitoun, M. Turala, Luc Pape, P. Herquet, R. Contri, Piotr Zalewski, U. Nau-Korzen, Manolis Dris, E. Lillethun, V.A. Uvarov, Daniel Treille, J. N. Jackson, P. Kokkinias, J. Lindgren, Nikita Smirnov, F. Carena, Pierre Billoir, M. Pernicka, I. Hietanen, Jose M. Benlloch, A. Grant, Vaclav Vrba, Hans Dijkstra, G. Lenzen, J. E. Campagne, M. Koratzinos, P. Negri, J.H. Bibby, Göran Jarlskog, A. Letessier-Selvon, J. Dolbeau, P.S.L. Booth, P. N. Ratoff, A. Lopez-Fernandez, J. Marco, M. P. Clara, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, T. A. Filippas, M. Regler, P. Yepes, H. Mueller, C. O. Higgins, B. Bouquet, R. Orava, A. Klovning, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Banerjee, S., Barczyk, A., Barillere, R., Barone, L., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., V, B., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Campanelli, M., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., I, C., Clare, R., Coignet, G., Colijn, A. P., Colino, N., Costantini, S., Cotorobai, F., Cozzoni, B., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierendonck, D. v., Lodovico, F. D., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournaud, D., Duinker, P., I, D., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Faccini, R., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Ferroni, F., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., I, F., Forconi, G., Fredj, L., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Sr, H., Hu, Y., I, I., Jin, B. N., Jones, L. W., Jong, P. d., I, J., Khan, R. A., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., V, K., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, I, L., Landi, G., Lassila Perini, K., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Leonardi, E., Levtchenko, P., Li, C., Lokhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marchesini, P., Marian, G., Martin, J. P., Marzano, F., G. G. G., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Molnar, P., Monteleoni, B., Moore, R., Moulik, T., Muanza, G. S., Muheim, F., A. J. M., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Pascale, G., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., V, P., Pohl, M., Postema, H., Pothier, J., Produit, N., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Raspereza, A., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Rhee, T. v., Riemann, S., Riles, K., Robohm, A., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Rubio, J. A., Ruschmeier, D., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., V, S., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Sciarrino, D., Seganti, A., Servoli, L., Shevchenko, S., Shivarov, N., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Tellili, B., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., I, V., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vogel, H., Vogt, H., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Ziegler, F., Zilizi, G., Zoller, M., L3 (IHEF, IoP, FNWI), LEP (IHEF, IoP, FNWI), Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Pohl, Martin, Sciarrino, Deborah, Aguilarbenitez, M., Ahlen, S., Alpat, B., Alverson, G., Antreasyan, D., Ball, R. C., Banicz, K., Baschirotto, A., Bilei, G. M., Bock, R., Boucham, A., Boutigny, D., Brigljevic, V., Brock, I. C., Busenitz, J., Buytenhuijs, A., Caria, M., Chan, A., Cheng, H. S., Chen, M., Chien, C. Y., Choi, M. T., Clare, I., Cohn, H. O., Cotorbai, F., Delacruz, B., Dalessandro, R., Deasmundis, R., Deboeck, H., Dibitonto, D., Vandierendonck, D., Dilodovico, F., Dorne, I., Drago, E., Duran, I., Dutta, S., Easo, S., Efremenko, Y., Elmamouni, H., Ernenwein, J. P., Fenyi, B., Fernandez, D., Garciaabia, P., Gerald, J., Goldfarb, S., Goldstein, J., Gougas, A., Gratta, G., Hangarter, K., Hartmann, B., Vanhoek, W. C., Hou, S. R., Hu, G., Innocente, V., Janssen, H., Dejong, P., Josamutuberria, I., Kasser, A., Kamyshkov, Y., Kapinos, P., Kapustinsky, J. S., Karyotakis, Y., Kienzlefocacci, M. N., Kim, S. C., Kim, Y. G., Kinnison, W. W., Kirkby, A., Kirkby, D., Korolko, I., Koutsenko, V., Kuijten, H., Deguevara, P. L., Lapoint, C., Lassilaperini, K., Laurikainen, P., Lecoultre, P., Lee, J. S., Lee, K. Y., Leggett, C., Legoff, J. M., Lieb, E., Lu, W., Lustemann, W., Majumder, G., Mangla, S., Marin, A., Mcnally, D., Vondermey, M., Mi, Y., A. J. W., Morganti, S., Mount, R., Muller, S., Nagy, E., Nahn, S., Nessitedaldi, F., Nippe, A., Ostonen, R., Peach, D., Pei, Y. J., Perretgallix, D., Petrak, S., Pevsner, A., Pinto, J. C., Plyaskin, V., Pojidaev, V., Rahalcallot, G., Rattaggi, M., Read, K., Vanrhee, T., Riemers, B. C., Rind, O., Ro, S., Rodriguez, F. J., Rohner, J. A., Santocchia, A., Sassowsky, M., Sauvage, G., Schegelsky, V., Schmidtkaerst, S., Schmitz, P., Schneegans, M., Sens, J. C., Shoutko, V., Shukla, J., Sopczak, A., Soulimov, V., Stone, H., Strauch, K., Susinno, G. F., Uwer, U., Vandewalle, R. T., Vetlitsky, I., Volkert, R., Vorobiev, I., Wang, J. C., Wittgenstein, F., Xu, J., Yao, X. Y., You, J. M., Zemp, P., Zeng, Y., Zhang, Z., Zhou, B., and Zhou, Y.
Subjects: COLLISIONS, Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, PAIR PRODUCTION, Electron–positron annihilation, FOS: Physical sciences, Elementary particle, ddc:500.2, 01 natural sciences, 7. Clean energy, Resonance (particle physics), JET FRAGMENTATION, DECAYS, High Energy Physics - Experiment, Nuclear physics, Particle decay, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], SILICON MICROVERTEX DETECTOR, PRECISE MEASUREMENT, Limit (mathematics), QCD ANALYSIS, 010306 general physics, L3 EXPERIMENT, Coupling constant, Physics, Muon, Annihilation, TEST BEAM, E+E-PHYSICS, 010308 nuclear & particles physics, ALPHA(S), High Energy Physics::Phenomenology, Detector, Pair production, SPECTRAL FUNCTIONS, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract: The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in tau_tau = 293.2 +/- 2.0 (stat) +/- 1.5 (syst) fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, alpha_s is found to be alpha_s(m_tau^2) = 0.319 +/- 0.015(exp.) +/- 0.014 (theory). The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in τ τ =293.2 ± 2.0 (stat) ± 1.5 (syst) fs . The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, α s is found to be α s ( m τ 2 ) = 0.319 ± 0.015 (exp) ± 0.014 (theory). The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in tau_tau = 293.2 +/- 2.0 (stat) +/- 1.5 (syst) fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, alpha_s is found to be alpha_s(m_tau^2) = 0.319 +/- 0.015(exp.) +/- 0.014 (theory).
Published: 2015

2. Measurement of inclusive π 0 production in hadronic Z 0 decays

Author: F. Simonetto, G. Leder, B. Åsman, V. Lefebure, D. Crennell, F. Mandl, G. Smadja, Patrick Jarry, G. Rinaudo, J. Salt, Z. Krumstein, L.N. Gerdyukov, T. Tabarelli, H. Palka, A. De Min, A. Trombini, I. Siccama, G. Sajot, P. Rebecchi, H. Rahmani, M. Blume, F. Barao, R. Mc Nulty, H. De Boeck, B. Jean-Marie, M. Tyndel, A. Deghorain, T. Buran, Markus Elsing, D. Fassouliotis, Ariella Cattai, F. Ledroit, J. Fuster, J.D. Richardson, Richard Jacobsson, O. Smirnova, A. N. Sisakian, A. Petrolini, A. Sadovsky, S. C. Blyth, G. Wilkinson, E. Higon, J. M. Lopez, Leif J. Jönsson, Borge Svane Nielsen, S. De Brabandere, B. De Lotto, G. Crosetti, Evgueni Vlasov, C. Joram, Andrei Nomerotski, J. Dolbeau, P. Bambade, C. Maocun, S. Bosworth, A. Lopez-Fernandez, R. Zuberi, Krzysztof Doroba, A. Passeri, F. Scuri, Chiara Meroni, P. Bruckman, G. W. Van Apeldoorn, L. Ventura, K. Yip, R. Lindner, J. W. Lamsa, Y. Lemoigne, Kathy Huet, Valeriy Pozdniakov, Olga Botner, M. Weierstall, Christine Kourkoumelis, E. Dahl-Jensen, T. Bolognese, K. Kurvinen, P.S.L. Booth, Per Jönsson, Norbert Neumeister, H. Herr, G. Transtromer, Chiara Mariotti, L. G. Tkatchev, Manfred Krammer, A. M. Wetherell, Charles Bricman, P. Kubinec, Peter Kluit, Clara Troncon, Carmen García, A. Seitz, J. P. Tavernet, M. Michelotto, D. Wicke, Javier Sánchez, L. Lanceri, G. Vegni, J. Van Eldik, Stéphane Plaszczynski, I. Lippi, T. S. Hill, H. Foeth, W. Bonivento, I. Stavitski, M. Schimmelpfennig, C. Zacharatou, P. Carrilho, J. J. Hernandez, J. Garcia, Kerem Cankocak, O. Podobrin, M.A. Lopez Aguera, S. Hahn, Francesca Romana Cavallo, M. Berggren, J. H. Wickens, B. Muryn, Marco Paganoni, Jose Luis Contreras, P. Delpierre, B. Ueberschaer, Paul Baillon, D. Zontar, Alexander Lincoln Read, A. Galloni, S. O. Holmgren, A. Klovning, Y. Arnoud, U. Mjoernmark, C. Bosio, P. B. Renton, E. I. Rosenberg, M. Szeptycka, Konstantinos Papageorgiou, H. T. Phillips, Vladimir Cindro, D. C. Fries, Louis Lyons, L. S. Vertogradov, M. Gibbs, R. Aleksan, W. Kucewicz, Tord Ekelof, Piotr Zalewski, B. Marechal, E. C. Katsoufis, A. De Angelis, S. Hoorelbeke, P. Herquet, Marta Calvi, Vincenzo Canale, V. V. Lapin, Geoffrey Smith, C. De Clercq, Marc Winter, G. Myatt, P. Collins, Maurizio Canepa, V. Obraztsov, K. D. Brand, W. J. Murray, L. Vitale, H. B. Crawley, D. Gele, M. Davenport, P. P. Allport, N. I. Zimin, S. Ragazzi, N. Redaelli, B. Golob, C. Kreuter, F. Dupont, P. Seager, Paolo Ronchese, A. G. Frodesen, O. Yushchenko, N. J. Kjaer, W. Oberschulte-Beckmann, E. K. Johansson, G. A. Chelkov, B. Loerstad, H. Wahlen, I. Roncagliolo, Klaus Hamacher, Daniel Bloch, D. Radojicic, Steinar Stapnes, M. Verlato, Ahmimed Ouraou, Tiziano Camporesi, G. Cosme, Juan Abel Barrio, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, T. Burgsmueller, N. Vassilopoulos, Maria Elena Pol, J. Chauveau, S. Katsanevas, Jan Krolikowski, Luiz Mundim, N. N. Khovanski, W. Bartl, Z. Hajduk, Maciej Górski, Demetrios Loukas, I. A. Tyapkin, V.A. Uvarov, R. A. Brenner, Robert S. Brown, S. J. Alvsvaag, E. Agasi, V. Ruhlmann-Kleider, K. H. Becks, P. Lutz, G. Tristram, P. J. Holt, Marco Bozzo, M. L. Andrieux, Manolis Dris, R. Moeller, M. Petrovyck, W. Krupinski, R. Sekulin, V. Nikolaenko, P. Frenkiel, M. Karlsson, A. M. Segar, Sandra Amato, T. A. Filippas, K. Belous, M. Regler, F. Fontanelli, J. P. Laugier, E. Vallazza, T. Moa, M. Pimenta, B. A. Khomenko, R. Barate, P. Roudeau, C. Vander Velde, G. Valenti, Matteo Pegoraro, A. Firestone, L. K. Resvanis, J. Baudot, I. V. Ajinenko, C. Walck, M. S. Bilenky, V. Malychev, Massimo Caccia, L.J. Carroll, A. Buys, A. Normand, C. Weiser, R. Ehret, A. Romero, P. V. Chliapnikov, Imad Baptiste Laktineh, D. Y. Bardin, S. Squarcia, H. Saarikko, Yu. Sedykh, Francesco Navarria, Alberto Benvenuti, W.S.C. Williams, P. Langefeld, Lucio Cerrito, T. Maron, Mogens Dam, H. Mueller, F. Pierre, Vincent Hedberg, A. Ferrer, Ugo Amaldi, J. Medbo, W. De Boer, E. Zevgolatakos, G. Sciolla, G. Maehlum, P. Juillot, D. W. Lane, P. Antilogus, Fabio Cossutti, J. N. Jackson, P. Pages, P. Weilhammer, H. J. Hilke, M. Battaglia, V. Chorowicz, D. Vilanova, J-C. Marin, B. Erzen, R. Gokieli, L. Gorn, Amiran Tomaradze, Fares Djama, O. Ullaland, R. Lauhakangas, Ph. Charpentier, T. Brenke, M. Zito, G. Ekspong, Josef Strauss, V. Chabaud, M. Espirito Santo, W. Venus, T. Lesiak, J. Rames, W. Van Doninck, P. N. Ratoff, W. Neumann, P. Kokkinias, Y. Dufour, Sandor Czellar, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, B. Franek, S. Lamblot, L. Bugge, P. Niss, W. T. Meyer, K. Grzelak, M. Prest, Lydia Roos, M. Mazzucato, Allan Hallgren, S. Simonetti, M. Begalli, R. Nicolaidou, A. J. Camacho Rozas, I. Kronkvist, J. P. Gerber, C. K. Legan, G. Polok, R. Orava, M. Donszelmann, Yu. Gouz, Danilo Zavrtanik, F. Stichelbaut, P. Buschmann, R. Mc Kay, C. Martinez-Rivero, J. Drees, William Trischuk, A. Markou, G. Eigen, A. Andreazza, Evangelos Gazis, Tiziano Rovelli, B. Bouquet, Ernesto Migliore, D. Z. Toet, P. Siegrist, P. H. Kramer, I. Ripp, R. Keranen, F. Zach, S. S. Meyer, R. Janik, Stanislav Nemecek, Francisco Matorras, N. Pukhaeva, Pierre Billoir, D. Souza-Santos, G. Della Ricca, B. Tome, Th. D. Papadopoulou, M. Dracos, L. Chaussard, J. Dahm, C. Defoix, F. Fulda-Quenzer, E. Graziani, J. E. Augustin, J. M. Brunet, D. J. Holthuizen, Cristian Stanescu, P. Branchini, P. A. Fischer, Vaclav Vrba, H. Schneider, Y. Sacquin, Hans Dijkstra, C. Gaspar, T. L. Hessing, R. Contri, Wolfgang Adam, G. C. Zucchelli, Yu. Belokopytov, V. Lepeltier, Paolo Checchia, Ph. Gavillet, R. Henriques, M. Kaiser, M. Gunther, J. MacNaughton, C. Caso, Rupert Leitner, G. Piana, Claire Bourdarios, P. Paganini, M. Nieuwenhuizen, G. Matthiae, Luc Pape, A. Maio, L. Brillault, J. P. Engel, M. V. Castillo Gimenez, Paul Dauncey, N. Demaria, G. Damgaard, V. Gracco, Klaus Moenig, M. A. Houlden, W. Da Silva, W. A. Mitaroff, F. Richard, P. Chochula, C. Matteuzzi, S. Almehed, R. Chierici, F. Hahn, F. Formenti, F. Cao, N. Ershaidat, V. Bocci, O. Kouznetsov, Martino Margoni, E. Fokitis, Luis Peralta, F. Kapusta, Ugo Gasparini, K. A. Drees, Guido Barbiellini, J. Guy, Marek Szczekowski, E. Rosso, H. Klein, Tim Adye, K. Osterberg, A. Baroncelli, P. Van Dam, G. D. Alekseev, C. De La Vaissiere, Mario Sannino, M. Mc Cubbin, K. Hultqvist, Gary John Barker, K. Woschnagg, A. Tilquin, L. De Paula, Pawel Jalocha, Barry King, E. Falk, M. J. Bates, E. Spiriti, M. Bonesini, R. Frühwirth, Toralf Bernhard Skaali, T. Spassov, D. Gamba, M. Witek, J. Timmermans, B. Dalmagne, F. Verbeure, B. Stugu, S. Gumenyuk, M. Gandelman, A. Lipniacka, Milos Lokajicek, D. Bertrand, L. Tortora, F. J. Harris, M. Pindo, E. Cortina, W. Ruckstuhl, Carlos Lacasta, Krzysztof A. Rybicki, G. Borisov, M. Baubillier, Achille Stocchi, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, B. Koene, F. Parodi, E. Karvelas, J. Cuevas Maestro, T. Todorov, M. Wielers, K. Karafasoulis, M. L. Turluer, D. Reid, R. Sosnowski, P. Vincent, Gianni Zumerle, F. Naraghi, P. Poropat, Andromachi Tsirou, Andre Augustinus, Paolo Morettini, J. G. Loken, C. De Saint-Jean, P. Beilliere, S. Marti i Garcia, D. Edsall, G. Grosdidier, A. Ruiz, M. A E Schyns, W. Hao, O. Barring, A. Onofre, T. J. V. Bowcock, F. Carena, A. G. Olshevski, U. Schwickerath, Maria Roberta Monge, A. Zalewska, M. Pernicka, Jesus Marco, G. Lenzen, R. Strub, Jacques Lemonne, F. Martinez-Vidal, V. Kostioukhine, M. Koratzinos, Laurent Mirabito, M. Feindt, S. Sánchez Navas, P. Negri, P. Sponholz, Göran Jarlskog, G. P. Gopal, W. D. Apel, Dietrich Liko, P. Privitera, Chariclia Petridou, Branislav Sitar, M. Reale, Daniel Treille, M. Bigi, J. Ridky, C. Parkes, Nikita Smirnov, and Andrea Perrotta
Subjects: Scattering cross-section, Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Hadron, Function (mathematics), 01 natural sciences, Nuclear physics, Distribution (mathematics), Electromagnetic calorimeter, 0103 physical sciences, Production (computer science), 010306 general physics, Parton shower
Abstract: An analysis is presented of inclusiveπ 0 production inZ 0 decays measured with the DELPHI detector. At low energies,π 0 decays are reconstructed by using pairs of converted photons and combinations of converted photons and photons reconstructed in the barrel electromagnetic calorimeter (HPC). At high energies (up to $$x_p = 2 \cdot p_\pi /\sqrt s = 0.75$$ ) the excellent granularity of the HPC is exploited to search for two-photon substructures in single showers. The inclusive differential cross section is measured as a function of energy forqq andbb events. The number ofπ 0’s per hadronicZ 0 event isN(π 0)/Z 0 =9.2±0.2(stat)±1.0(syst) and forbb events the number ofπ 0’s is N(π 0)/bb=10.1±0.4(stat)±1.1(syst). The ratio of the number ofπ 0’s inbb events to hadronicZ 0 events is less affected by the systematic errors and is found to be 1.09±0.05±0.01. The measuredπ 0 cross sections are compared with the predictions of different parton shower models. For hadronic events, the peak position in theξ p=ln(1/xp) distribution isξ* p =3.90 −0.14 +0.24 . The average number ofπ 0’s from the decay of primary B hadrons is found to be N(B→π 0 X)/B hadron=2.78±0.15(stat)±0.60(syst).
Published: 2016

3. Measurement of the partial width of the decay of the Z0 into charm quark pairs

Author: U. Kruener-Marquis, M. L. Turluer, D. Reid, D. Bertrand, P. Siegrist, P. Vaz, I. Lippi, J-C. Marin, P. Lutz, E. K. Johansson, D. Bollini, P. B. Renton, W. S. C. Williams, Spyros Tzamarias, P. Poropat, Andromachi Tsirou, P. V. Chliapnikov, Andre Augustinus, A. Wehr, Edoardo Castelli, D. Radojicic, E. Menichetti, E. Fokitis, Paula Eerola, D.N. Edwards, S. Biagi, Tiziano Rovelli, M. Cresti, S. Gawne, Wolfgang Adam, M. Davenport, J. Pyyhtia, R. Keranen, L. Paper, E. I. Rosenberg, P. Frenkiel, A. Passeri, V.A. Uvarov, A. M. Segar, V. Nikolaenko, G. Trustram, Tord Ekelof, H. Staeck, P. Kapusta, G. E. Kalmus, M. Kostrikov, F. Grard, V. Vrba, S. Squarcia, F. Cao, E. N. Gazis, B. Korzen, R.B. Kadyrov, Bengt Lund-Jensen, G. Ekspong, Giovanni Darbo, F. Couchot, A. A. Rademakers, W. T. Meyer, Anthony Lincoln Read, A. P. Ostankov, J. Bjarne, H. Palka, Itzhak Roditi, Natale Demaria, Gueorgui Chelkov, A. Ruiz, G. R. Wilkinson, C. Vander Velde, Wojciech Kucewicz, L. Tortora, T. Tuuva, J. N. Jackson, S. O. Holmgren, M. Szczekowski, G. Galeazzi, A. Ferrer, L. S. Vertogradov, Borge Svane Nielsen, H. Burmeister, F. Barao, Roberto Cirio, L. K. Resvanis, F. Simonetto, E. Lieb, J. J. Lozano, M. H. Gros, U. Nnau-Lorzen, M. S. Bilenky, S. Ferroni, P. Bambade, K. Kurvinen, P.S.L. Booth, J. Lindgren, L.J. Carroll, W. Klempt, L. Lyons, O. Doll, Krzysztof Doroba, George Kalkanis, Chiara Meroni, Robert S. Brown, Tiziano Camporesi, Klaus Hamacher, M. Bonapart, Massimo Caccia, J. G. Loken, S. D. Hodgson, C. Bricman, A. Pullia, M. I. Laakso, L. O. Eek, R. C. Shellard, Josef Hrubec, M. A. Winter, S. Simonetti, J. Maillard, T. A. Filippas, T. Hofmokl, S. Gumenyuk, R. A. Brenner, Ariella Cattai, P. Ronschese, D. Benedic, E. Higon, R. Seufert, F. Scuri, J. Sanxhez, A. M. Wetherell, Th. D. Papadopoulou, J. H. Bibby, Pierre Billoir, G. Cosme, A. Baroncelli, Marco Bozzo, M. J. Bates, B. De Lotto, Guenakh Mitselmakher, G. Crosetti, S. J. Alvsvaag, Leif J. Jönsson, Ugo Gasparini, D. C. Fries, P. Weilhammer, I. Belokopytov, D. Husson, I. A. Tyapkin, T. S. Spassoff, A. Campion, M. Pegoraro, M. Pernicka, G. Lenzen, R. Strub, J. E. Campagne, M. Koratzinos, L. Lanceri, Paul Baillon, E. C. Katsoufis, G. Myatt, E. Graziani, Mikko Voutilainen, P. S. Iversen, F. Fontanelli, H. Furstenau, E. Sanchis, A. Lopez-Fernandez, Marta Calvi, L. Di Ciaccio, C. Defoix, P. Szymanski, A. Firestone, N. Redaelli, J. Marco, S. Ueberschaer, F. Waldner, H. Wahlen, Ariel Goobar, Ugo Amaldi, H. Forsbach, J. W. Lamsa, Guido Barbiellini, H. Herr, L. G. Tkatchev, Jose M. Benlloch, A. Grant, Mogens Dam, C. Lambropoulos, Patrick Jarry, G. Rinaudo, Clara Troncon, J. Guy, W. De Boer, Geoffrey Smith, E.N. Tsyganov, J. H. Wickens, W. Dulinski, Jose Luis Contreras, A. Fenyuk, J. H. Koehne, M. Pimenta, K. Woschnagg, B. A. Khomenko, A. De Min, A. Stocchi, Joao Varela, Hans Dijkstra, A. Markou, T. Buran, N. De Groot, P. Beltran, M. Vollmer, P. Delpierre, Tim Adye, W. D. Apel, B. Franek, P. Kluit, M. Mazzucato, U. Rossi, C. Walck, Paolo Giacomelli, J. E. Hooper, Francesco Navarria, L. Vibert, K. H. Becks, G. W. Van Apeldoorn, M. P. Clara, G. D. Alekseev, P. Negri, J. M. Brunet, M. Jonker, Pierre Astier, J. Zúñiga, M. Boratay, P. Abreu, P. Borgeaud, R. Sekulin, A. Zalewska, M. Baubillier, K. D. Brand, E. Vallazza, L. Ventura, G. Hamel de Monchenault, H. Schneider, Göran Jarlskog, Jan Ridky, L. Mathis, T. Moa, M.A. Lopez Aguera, M. Mc Cubbin, K. Hultqvist, H. Borner, C. Pinori, B.D. Hyams, Mikael Berggren, S. Ragazzi, A. Sebastia, Francesca Romana Cavallo, Josef Strauss, E. Lillethum, A. Letessier-Selvon, Mitchell Wayne, P. Zalewski, V. Lepeltier, G. Kantarjian, B. Grossetete, Allan Hallgren, Vegni, Giovanni Valenti, F. Udo, W. Venus, G. Maehlum, I. Herbst, V. Ruhlmann, Paolo Checchia, Jacques Lemonne, J. Velasco, E. Rosso, H. Klein, Ph. Gavillet, V. V. Lapin, Hans Muller, Fares Djama, V. Canale, N. K. Visnevskiy, C. De Clercq, F. Kapusta, L. Bugge, J. Drees, P. D. Dauncey, N. J. Kjaer, A. J. Camacho Rozas, G. Sette, M. Sessa, Maria Elena Pol, G. Leder, Alexander Vodopyanov, B. Åsman, G. Zumerle, L. Cerrito, F. Bianchi, P. N. Bogolubov, F. Ledroit, Kjell Fransson, S. Katsanevas, P. Privitera, D. Z. Toet, T. Kreuzberger, D. Vilanova, Christine Kourkoumelis, E. Dahl-Jensen, M. Schaeffer, D. Y. Bardin, P. Beilliere, D. Crennell, W. Van Doninck, P. N. Ratoff, Andrea Perrotta, F. Alted, J. Dolbeau, F. Mandl, G. Smadja, A. Klovning, Daniel Treille, Paul Allen, R. Lucock, R. Sosnowski, Olga Botner, Krzysztof Korcyl, A. Tilquin, Jorge-Armando Benitez Garcia, U. Mjoernmark, R. Gokieli, B. W. Heck, P.I. Zarubin, J. J. Hernandez, J. Cuevas Maestro, P. O. Hulth, P. Yepes, M. Regler, C. J. Beeston, J. Krolikowski, N. Magnussen, P. Herquet, H. De Boeck, V. Falaleev, E. Daubie, P. Laurikainen, M. De Beer, M. R. Monge, B. Jean-Marie, S. Braibant, S. Tavernier, M. Tyndel, M. Bonesini, J. A. M. A. Buytaert, Y. Gouz, N. Crosland, G. Gopal, Y. Sacquin, Andrey Korytov, R. Llosa, H. Mueller, J.M. Gago, H. Foeth, D. Wormald, R. Contri, M. Fernandez Alonso, T. Bolognese, E. J. Sanchez, R. Orava, U. Trevisan, R. Zukanovich Funchal, M. Szeptycka, W. Bartl, J. Wikne, N. Smirnov, V. Perevozchikov, J. A. Valls Ferrer, M. Turala, Manolis Dris, J. P. Gerber, Mario Sannino, K. W. Glitza, P. Roudeau, G. Skjevling, J. P. Laugier, F. Stichelbaut, A. De Angelis, D. Delikaris, R. Dzhelyadin, D. Gamba, C. Stanescu, R. Lauhakangas, N. van Eijndhoven, E. Zevgolatakos, G. Voulgaris, F. Verbeure, Daniel Bloch, Ahmimed Ouraou, V.M. Golovatyuk, Marcos Dracos, B. Bouquet, Juan Fuster, M. Kopf, B. Dalmagne, Laurent Chevalier, R. Zitoun, F. Fulda-Quenzer, P. Kokkinias, Milos Lokajicek, J. Kesteman, E. G. Anassontzis, J. P. Engel, M. V. Castillo Gimenez, G. Damgaard, O. Pingot, V. Gracco, H. Saarikko, Pavlos Ioannou, A.K. Topphol, Klaus Moenig, M. A. Houlden, G. Matthiae, W. A. Mitaroff, F. Richard, M. Hahn, F. Naraghi, V. G. Timofeev, S. Almehed, K. Spang, F. Hahn, C. Matteuzzi, E. Lillestol, G. Grosdidier, Alessandra Romero, I.A. Gritsaenko, J. E. Augustin, A. Zaitsev, S. Haider, A. N. Sissakian, Claudia J. Stubenrauch, Eleuterio Spiriti, C. Caso, H. B. Crawley, P. Morettini, Pierre Juillot, B. Koene, A.N. Diddens, D. Loukas, M. Crozon, R. Pain, V. Obraztsov, O. Barring, S. Dagoret, P. Van Dam, Renato Turchetta, C. De La Vaissiere, G. Zhang, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, P. Branchini, G. E. Theodosiou, M.D.M. De Fez Laso, R. Moeller, A. Pinsent, N. Yamdagni, M. T. Trainor, Sandor Czellar, N. Brummer, G. Wormser, Pieter David, W. H. Range, W. Krupinski, S. Maltezos, H. J. Hilke, J. Skeens, G. Stavropoulos, V. Chorowicz, R. Mc Kay, N. I. Zimim, F. Adami, Jürgen H. Werner, Philippe Charpentier, Francisco Matorras, T. B. Skaali, F. J. Harris, A. G. Frodesen, Z. Hajduk, Maciej Górski, A. Hakansson, C. Bosio, E. Vlasov, R. Holmes, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, Meson, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, 01 natural sciences, JET FRAGMENTATION, Charm quark, Standard Model, law.invention, Nuclear physics, PHYSICS, ENERGY, Pion, D-STAR-MESON, CROSS-SECTION, law, 0103 physical sciences, 010306 general physics, Collider, Nuclear Experiment, Boson, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Physique des particules élémentaires, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: A determination of the partial width Γc̄ of the Z0 boson into charm quark pairs is presented, based on a total sample of 36 900 Z0 hadronic decays measured with the DELPHI detector at the LEP collider. The production rate of cc events is derived from the inclusive analysis of charged pions coming from the decay of charmed meson D*+-→D0π+ and D*-→D̄0π- where the π± is constrained by kinematics to have a low pT with respect to the jet axis. The probability to procedure these π± from D*± decay in cc events is taken to be 0.31±0.05 as measured at √S = 10.55 GeV. The measured relative partial width Γ∞/Γh = 0.162± 0.030(stat.) ± 0.050(syst.) is in good agreement with the standard model value of 0.171. Together with our previous measurement of the total hadronic width Γh this implies Γ∞ = 282 ± 53 (stat.) ± 88 (syst.) MeV., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2016

4. BOSE-EINSTEIN CORRELATIONS IN THE HADRONIC DECAYS OF THE Z(0)

Author: Jorge-Armando Benitez Garcia, D. J. Holthuizen, T. J. V. Bowcock, K. Furnival, F. Simonetto, B. A. Della Riccia, G. D. Alekseev, E. Torassa, Wolfgang Adam, G. Leder, B. Åsman, Itzhak Roditi, C. Gaspar, M. Mc Cubbin, K. Hultqvist, Maria Elena Pol, S. Katsanevas, Juan Fuster, M. T. Trainor, Yu. Belokopytov, D. Crennell, F. Mandl, G. Smadja, R. Contri, M. Karlsson, M. Jonker, S. Schael, S. Ueberschaer, T. A. Filippas, R. Lauhakangas, Ph. Charpentier, C. Kourkoumelis, D. Vilanova, M. Pimenta, B. A. Khomenko, M. Regler, Klaus Hamacher, H. Herr, N. De Groot, A. Stocchi, Francesco Navarria, J. Zúñiga, Jelena Krstic, Ugo Gasparini, B. Franek, R. Ehret, F. Couchot, I. Lippi, P. Siegrist, E.N. Tsyganov, J. H. Wickens, B. Muryn, Marco Paganoni, Jose Luis Contreras, W. De Boer, C. Vander Velde, L. Vitale, M. Donszelmann, D. Radojicic, S. J. Alvsvaag, E. Agasi, L. Mathis, M. Los, V. Lepeltier, P. Lutz, T. Maron, Tim Adye, Francesca Romana Cavallo, J. P. Engel, K. A. J. Forbes, J. Bjarne, G. Ekspon, Mitchell Wayne, M. V. Castillo Gimenez, S. D. Hodgson, R. Gokieli, M. S. Bilenky, Andre Tilquin, L.J. Carroll, M. Turala, Spyros Tzamarias, O. Tchikilev, A. G. Olshevski, Paolo Checchia, G. Vegni, Ph. Gavillet, B. Dalmagne, Laurent Chevalier, L. Chaussard, A. Chan, C. Lambropoulos, Ugo Amaldi, E. Zevgolatakos, P. Antilogus, P. E. S. Nilsen, J. T.M. Chrin, E. Anassontzis, G. Damgaard, P. Borgeaud, U. Kruener-Marquis, V. V. Lapin, M. Michelotto, Tord Ekelof, H. Staeck, Mogens Dam, Giovanni Crosetti, Fabrizio Scuri, W.S.C. Williams, P. Abreu, T. Buran, M. Tyndel, O. Pingot, F. Hahn, Rupert Leitner, Th. D. Papadopoulou, Guenakh Mitselmakher, V. Ruhlmann, V. Gracco, G. Matthiae, S. Rossi, C. De Clercq, F. Cao, Maria Roberta Monge, Dietrich Liko, A. Zalewska, Claire Bourdarios, Paolo Ronchese, W. J. Murray, M. Battaglia, W. Van Doninck, Lucio Cerrito, F. Ledroit, G. Stavropoulos, V. Chorowicz, G. Rinaudo, G. Galeazzi, P. Privitera, B. Loerstad, A. De Angelis, G. Lenzen, Milos Lokajicek, Jacques Lemonne, R. Strub, Juan Abel Barrio, Borge Svane Nielsen, V. Bocci, A. Tomaradze, J. Kesteman, N. J. Kjaer, J. J. Lozano, R. Lindner, Martino Margoni, E. Fokitis, H. Mueller, Marco Sessa, A. De Min, Joao Varela, I. Siccama, Piotr Zalewski, G. Sajot, S. Marti, P. Yepes, F. Stichelbaut, Cristian Stanescu, P. Branchini, Krzysztof Doroba, H. Schneider, R. Mc Kay, A. Andreazza, R. Zuberi, Alastair Grant, S. O. Holmgren, L. S. Vertogradov, J. P. Gerber, C. O. Higgins, H. Burmeister, M. Bozzo, J. J. Gomez Y Cadenas, Andrea Perrotta, G. Sette, A. Elliot Peisert, Jan Buytaert, D. Benedic, Peter Kluit, Maciej Górski, I. A. Tyapkin, O. Kouznetsov, D. Isenhower, V.A. Uvarov, Klaus Moenig, M. A. Houlden, Olga Botner, Krzysztof Korcyl, L. Tortora, T. S. Spassoff, R. A. Brenner, G. Myatt, L. Bugge, G. Tristram, Paula Eerola, Daniel Treille, W. Da Silva, W. A. Mitaroff, A.N. Sisakian, Carmen García, Robert S. Brown, A. J. Camacho Rozas, B. Nijjhar, D. Z. Toet, A. Klovning, D. Y. Bardin, Mario Sannino, G. Hamel de Monchenault, G. E. Kalmus, J. N. Jackson, M. A. Lopez Aguera, B. Bouquet, R. Mc Nulty, K. Woschnagg, P. Herquet, A. Firestone, H. De Boeck, R. Keranen, B. Jean-Marie, F. J. Harris, Josef Strauss, S. Braibant, V. Chabaud, W. Venus, A. Maltezos, P. Niss, S. Squarcia, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, P. Kokkinias, R. Orava, Fernand Grard, M. L. Turluer, Gabriella Sciolla, D. Reid, Gianni Zumerle, R. Holmes, H. Saarikko, T. Tabarelli, H. Foeth, E. Lieb, R. J. Apsimon, J. E. Hooper, Carlos Lacasta, T. L. Hessing, A. M. Segar, J. Ridky, D. Zavrtanik, Krzysztof A. Rybicki, D. Wormald, Francisco Matorras, Manolis Dris, P. Roudeau, N. Yamdagni, F. Richard, M. Hahn, S. Almehed, M. Pegoraro, Javier Sánchez, J. Maillard, I. Kronkvist, M. Mazzucato, Paul Allen, P. S. Iversen, C. Matteuzzi, P. H. Kramer, M. Vollmer, U. Rossi, Paolo Giacomelli, G. Wormser, S. Delorme, Ariella Cattai, M. Zito, F. Fontanelli, M. Voutilainen, S. Volponi, Pierre Billoir, Nikita Smirnov, Chiara Meroni, F. Carena, M. Szczekowski, P. Vaz, P. Poropat, A. Pullia, Andromachi Tsirou, E. Lillethun, M. Crozon, J. Lindgren, W. T. Meyer, M. Fernandez Alonso, S. Vlassopoulos, U. Mjoernmark, R. Moeller, Andrey Korytov, P. Grosse-Wiesmann, P. Collins, Leif J. Jönsson, B. Boštjančič, V. Perevozchikov, B. Grossetete, Allan Hallgren, V. Obraztsov, Andre Augustinus, A. Wehr, M. Richardson, A. Ruiz, H. Furstenau, C.J. Beeston, Antonio Baroncelli, Roberto Cirio, L. K. Resvanis, M. De Beer, D. Delikaris, Tiziano Camporesi, W. Klempt, J. Dolbeau, M. A E Schyns, P. Bambade, U. Haedinger, R. Zukanovich Funchal, T. Todorov, I. Roncagliolo, H. Palka, G. Skjevling, G. Cosme, G. Barbiellini, J. E. Augustin, M. Chapkin, T. Pettersen, Eugene P. Gross, T. Hofmokl, J. Werner, U. Trevisan, Vaclav Vrba, Natale Demaria, P. F. Honore, Patrick Jarry, P.S.L. Booth, O. Toker, F. Barao, M. Pernicka, M. Bonesini, N. G. Redaelli, Massimo Caccia, I. Hietanen, E. Dahl-Jensen, Vladimir Nikolaenko, G. Borisov, T. A. Fearnley, C. Troncon, Charles Bricman, W. D. Apel, Hans Dijkstra, E. Rosso, H. Klein, J. C. Marin, Daniel Bloch, J. Salt, Jan Krolikowski, N. N. Khovanski, E. Higon, R. Seufert, W. Bartl, Y. Sacquin, Jesus Marco, P. Juillot, A. Lopez-Fernandez, K. Osterberg, Ahmimed Ouraou, V.M. Golovatyuk, H. Wahlen, Ariel Goobar, S. Bosworth, V. Kostioukhine, M. Baubillier, P. Frenkiel, P. Ioannou, J. Straver, Eleuterio Spiriti, J. A. Valls Ferrer, M. J. Bates, J. H. Koehne, H. Briand, A. M. Wetherell, F. Waldner, K. Kulka, Toralf Bernhard Skaali, C. Caso, L. Lanceri, Tuure Tuuva, A. M. Zaitsev, Alexander Vodopyanov, J. P. Laugier, D. Gamba, J. J. Hernandez, G. Voulgaris, P. O. Hulth, F. Bianchi, C. Walck, J. M. Levy, M. Feindt, P. Negri, F. Verbeure, F. Kapusta, H. P. Borner, E. I. Rosenberg, M. P. Clara, K. H. Becks, Stefaan Tavernier, R. Barate, P. Delpierre, E. Daubie, E. Vallazza, Göran Jarlskog, R. Sosnowski, F. Naraghi, V. G. Timofeev, A. Letessier-Selvon, A. Daum, E. Karvelas, H. B. Crawley, G. P. Gopal, A. G. Frodesen, K. D. Brand, J. Pennanen, J. Cuevas Maestro, N. I. Zimin, S. Ragazzi, M. Kopf, E. K. Johansson, C. Bosio, D. Bertrand, Steinar Stapnes, G. W. Van Apeldoorn, P. Weilhammer, J. W. Lamsa, J. Chauveau, W. Bonivento, E. Cortina, W. Ruckstuhl, R. Zitoun, Jon Christopher Wikne, C. Defoix, F. Fulda-Quenzer, K. Kurvinen, E. Castelli, L. Ventura, P. Beltran, G. Grosdidier, Ivan Mikulec, E. Graziani, William Trischuk, Y. Lemoigne, J. Drees, J. M. Brunet, P. D. Dauncey, A. Passeri, M. Weierstall, P. N. Bogolubov, Evangelos Gazis, G. Meola, A. Markou, George Kalkanis, P. B. Renton, Louis Lyons, D. C. Fries, E. C. Katsoufis, Pieter David, Marta Calvi, Vincenzo Canale, Geoffrey Smith, N. Brumner, R. Sekulin, W. Krupinski, G. A. Chelkov, M. Dracos, Demetrios Loukas, G. Valenti, T. Moa, G. Maehlum, D. Fassouliotis, A. Romero, F. Pierre, S. Haider, Fares Djama, A. Ferrer, O. Ullaland, Giovanni Darbo, P. N. Ratoff, D. R. Johnson, P. Szymanski, S. Simonetti, H. J. Hilke, M. Begalli, M. A. Winter, T. Bolognese, A. Petrolini, Y. Dufour, T. Henkes, B. De Lotto, Sandor Czellar, Evgueni Vlasov, G. Polok, G. E. Theodosiou, L. G. Tkatchev, G. Wilkinson, M.D.M. De Fez Laso, M. Berggren, Tiziano Rovelli, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, C. Ronnqvist, A. P. Ostankov, Julien Guy, Luc Pape, Anna Lipniacka, S. Dagoret, P. Van Dam, C. De La Vaissiere, G. Zhang, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, S. L. Blyth, P. Morettini, B. Koene, J. G. Loken, P. Beilliere, R. Pain, W. Hao, O. Barring, Z. Hajduk, M. Davenport, A. Hakansson, P. V. Chliapnikov, Abreu, P, Adam, W, Adye, T, Agasi, E, Alekseev, G, Allen, P, Almehed, S, Alvsvaag, S, Amaldi, U, Anassontzis, E, Andreazza, A, Antilogus, P, Apel, W, Apsimon, R, Åsman, B, Augustin, J, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbiellini, G, Bardin, D, Baroncelli, A, Barring, O, Barrio, J, Bartl, W, Bates, M, Battaglia, M, Baubillier, M, Becks, K, Beeston, C, Begalli, M, Beilliere, P, Belokopytov, Y, Beltran, P, Benedic, D, Berggren, M, Bertrand, D, Bianchi, F, Bilenky, M, Billoir, P, Bjarne, J, Bloch, D, Blyth, S, Bocci, V, Bogolubov, P, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P, Borgeaud, P, Borisov, G, Borner, H, Bosio, C, Bostjancic, B, Bosworth, S, Botner, O, Bouquet, B, Bourdarios, C, Bowcock, T, Bozzo, M, Braibant, S, Branchini, P, Brand, K, Brenner, R, Briand, H, Bricman, C, Brown, R, Brumner, N, Brunet, J, Bugge, L, Buran, T, Burmeister, H, Buytaert, J, Caccia, M, Calvi, M, Camacho Rozas, A, Camporesi, T, Canale, V, Cao, F, Carena, F, Carroll, L, Caso, C, Castelli, E, Castillo Gimenez, M, Cattai, A, Cavallo, F, Cerrito, L, Chabaud, V, Chan, A, Chapkin, M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G, Chevalier, L, Chliapnikov, P, Chorowicz, V, Chrin, J, Cirio, R, Clara, M, Collins, P, Contreras, J, Contri, R, Cortina, E, Cosme, G, Couchot, F, Crawley, H, Crennell, D, Crosetti, G, Crozon, M, Maestro, J, Czellar, S, Dagoret, S, Dahl-Jensen, E, Dalmagne, B, Dam, M, Damgaard, G, Darbo, G, Daubie, E, Daum, A, Dauncey, P, Davenport, M, David, P, Da Silva, W, Defoix, C, Delikaris, D, Della Riccia, B, Delorme, S, Delpierre, P, Demaria, N, De Angelis, A, De Beer, M, De Boeck, H, De Boer, W, De Clercq, C, De Fez Laso, M, De Groot, N, De La Vaissiere, C, De Lotto, B, De Min, A, Dijkstra, H, Di Ciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Dris, M, Dufour, Y, Eek, L, Eerola, P, Ehret, R, Ekelof, T, Ekspon, G, Peisert, A, Engel, J, Fassouliotis, D, Fearnley, T, Feindt, M, Alonso, M, Ferrer, A, Filippas, T, Firestone, A, Foeth, H, Fokitis, E, Fontanelli, F, Forbes, K, Franek, B, Frenkiel, P, Fries, D, Frodesen, A, Fruhwirth, R, Fulda-Quenzer, F, Furnival, K, Furstenau, H, Fuster, J, Galeazzi, G, Gamba, D, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, E, Gerber, J, Giacomelli, P, Gokieli, R, Golovatyuk, V, Gomez Y Cadenas, J, Goobar, A, Gopal, G, Gorski, M, Gracco, V, Grant, A, Grard, F, Graziani, E, Grosdidier, G, Gross, E, Grosse-Wiesmann, P, Grossetete, B, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, De Monchenault, G, Hao, W, Harris, F, Henkes, T, Hernandez, J, Herquet, P, Herr, H, Hessing, T, Hietanen, I, Higgins, C, Higon, E, Hilke, H, Hodgson, S, Hofmokl, T, Holmes, R, Holmgren, S, Holthuizen, D, Honore, P, Hooper, J, Houlden, M, Hrubec, J, Hulth, P, Hultqvist, K, Ioannou, P, Isenhower, D, Iversen, P, Jackson, J, Jalocha, P, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E, Johnson, D, Jonker, M, Jonsson, L, Juillot, P, Kalkanis, G, Kalmus, G, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, E, Keranen, R, Kesteman, J, Khomenko, B, Khovanski, N, King, B, Kjaer, N, Klein, H, Klempt, W, Klovning, A, Kluit, P, Koehne, J, Koene, B, Kokkinias, P, Kopf, M, Korcyl, K, Korytov, A, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, P, Krolikowski, J, Kronkvist, I, Krstic, J, Kruener-Marquis, U, Krupinski, W, Kulka, K, Kurvinen, K, Lacasta, C, Lambropoulos, C, Lamsa, J, Lanceri, L, Lapin, V, Laugier, J, Lauhakangas, R, Leder, G, Ledroit, F, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Letessier-Selvon, A, Levy, J, Lieb, E, Liko, D, Lillethun, E, Lindgren, J, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, J, Lopez-Fernandez, A, Lopez Aguera, M, Los, M, Loukas, D, Lozano, J, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maltezos, A, Mandl, F, Marco, J, Margoni, M, Marin, J, Markou, A, Maron, T, Marti, S, Mathis, L, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mc Cubbin, M, Mc Kay, R, Mc Nulty, R, Meola, G, Meroni, C, Meyer, W, Michelotto, M, Mikulec, I, Mitaroff, W, Mitselmakher, G, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, M, Morettini, P, Mueller, H, Murray, W, Muryn, B, Myatt, G, Naraghi, F, Navarria, F, Negri, P, Nielsen, B, Nijjhar, B, Nikolaenko, V, Nilsen, P, Niss, P, Obraztsov, V, Olshevski, A, Orava, R, Ostankov, A, Osterberg, K, Ouraou, A, Paganoni, M, Pain, R, Palka, H, Papadopoulou, T, Pape, L, Passeri, A, Pegoraro, M, Pennanen, J, Perevozchikov, V, Pernicka, M, Perrotta, A, Petrolini, A, Pettersen, T, Pierre, F, Pimenta, M, Pingot, O, Pol, M, Polok, G, Poropat, P, Privitera, P, Pullia, A, Radojicic, D, Ragazzi, S, Ratoff, P, Read, A, Redaelli, N, Regler, M, Reid, D, Renton, P, Resvanis, L, Richard, F, Richardson, M, Ridky, J, Rinaudo, G, Roditi, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronnqvist, C, Rosenberg, E, Rossi, S, Rossi, U, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schael, S, Schneider, H, Schyns, M, Sciolla, G, Scuri, F, Segar, A, Sekulin, R, Sessa, M, Sette, G, Seufert, R, Shellard, R, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, A, Skaali, T, Skjevling, G, Smadja, G, Smirnov, N, Smith, G, Sosnowski, R, Spassoff, T, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stapnes, S, Stavropoulos, G, Stichelbaut, F, Stocchi, A, Strauss, J, Straver, J, Strub, R, Szczekowski, M, Szeptycka, M, Szymanski, P, Tabarelli, T, Tavernier, S, Tchikilev, O, Theodosiou, G, Tilquin, A, Timmermans, J, Timofeev, V, Tkatchev, L, Todorov, T, Toet, D, Toker, O, Tomaradze, A, Torassa, E, Tortora, L, Trainor, M, Treille, D, Trevisan, U, Trischuk, W, Tristram, G, Troncon, C, Tsirou, A, Tsyganov, E, Turala, M, Turluer, M, Tuuva, T, Tyapkin, I, Tyndel, M, Tzamarias, S, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Valls Ferrer, J, Velde, C, Van Apeldoorn, G, Van Dam, P, Van Doninck, W, Varela, J, Vaz, P, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Vertogradov, L, Vilanova, D, Vitale, L, Vlasov, E, Vlassopoulos, S, Vodopyanov, A, Vollmer, M, Volponi, S, Voulgaris, G, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wayne, M, Wehr, A, Weierstall, M, Weilhammer, P, Werner, J, Wetherell, A, Wickens, J, Wikne, J, Wilkinson, G, Williams, W, Winter, M, Wormald, D, Wormser, G, Woschnagg, K, Yamdagni, N, Yepes, P, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zhang, G, Zimin, N, Zito, M, Zitoun, R, Zuberi, R, Funchal, R, Zumerle, G, Zuniga, J, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)
Subjects: COLLISIONS, Particle physics, Nuclear and High Energy Physics, E+E ANNIHILATION, LUND MONTE-CARLO, 34-GEV, Electron–positron annihilation, Hadron, 01 natural sciences, JET FRAGMENTATION, PHYSICS, Nuclear physics, Pion, PION INTERFEROMETRY, MASS-ENERGY, COHERENCE, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Physics, 010308 nuclear & particles physics, Detector, Bose–Einstein correlations, Charged particle, Reference sample, Physique des particules élémentaires, High Energy Physics::Experiment, Particle Physics - Experiment, Coherence (physics)
Abstract: Bose-Einstein correlation between pairs of like-sign charged particles produced in e+e- annihilations near the Z0 peak have been studied using data taken with the DELPHI detector at LEP. An enhancement is found in the production of pairs of identical pions of similar moments, with respect to a reference sample. Under the hypothesis that the pions are emitted by a spherically symmetrical source with gaussian density, the data indicate a radius of the source of r = 0.62±0.04(stat.)±0.20(syst.) fm. The large systematic uncertainty reflects the sensitivity of r to the choice of the reference sample, 0, info:eu-repo/semantics/published
Published: 2016

5. Evaluation of a CdZnTe pixel array for X- and gamma-ray spectroscopic imaging

Author: R. A. Hijmering, G. Maehlum, E. Welter, Francesco Quarati, and Alan Owens
Subjects: Physics, Nuclear and High Energy Physics, Pixel, business.industry, Astronomy, Gamma ray, Synchrotron radiation, Photon counting, Cadmium zinc telluride, chemistry.chemical_compound, Optics, chemistry, Application-specific integrated circuit, Beamline, Optoelectronics, ddc:530, Spectroscopy, business, Instrumentation
Abstract: X-ray imaging is an essential tool for a wide range of disciplines. Whilst the majority of applications rely on analog integrating or on photon counting formats, the future development of this field lies in the exploitation of spatially resolved spectroscopy and in particular, using materials which can operate with near Fano limited energy resolution at room temperature. This communication focuses on a new prototype 16×16 cadmium zinc telluride (CdZnTe) pixel array fabricated by eV Products [ http://www.evproducts.com/ [1] ], which, assembled with an ASIC made by Ideas ASA [ http://www.ideas.no/products/ASICs/pdf/XA1.6.pdf [2] ], provides both imaging and spectroscopic capabilities at the individual pixel level. We report detailed results of hard X-ray measurements carried out at the X1 beam line of the HASYLAB synchrotron radiation facility in Hamburg, Germany [ http://www-hasylab.desy.de/facility/ [3] ].
Published: 2006

6. 64-channel pre-amplifier ASICs for superconducting tunnel junction readout

Author: A Fernández-León, Anthony J. Peacock, Didier D. E. Martin, G Mæhlum, Peter Verhoeve, and B Glass
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Preamplifier, Detector, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Electrical engineering, Integrated circuit, law.invention, Computer Science::Hardware Architecture, Application-specific integrated circuit, law, visual_art, Electronic component, Hardware_INTEGRATEDCIRCUITS, visual_art.visual_art_medium, Superconducting tunnel junction, Electronics, business, Instrumentation, Hardware_LOGICDESIGN, Electronic circuit
Abstract: Superconducting Tunnel Junctions (STJ) have been extensively investigated as photon detectors covering the range from near-infrared to X-ray energies. STJ detector developments now focus on the integration of many devices into large imaging arrays. However, current state-of-the-art preamplifier electronics for these detectors still rely on circuits build from discrete components. We are reporting here on a first attempt to integrate such circuits into an application-specific integrated circuit (ASIC). Two ASICs have been developed. One consists of 64 low-noise, low-offset pre-amplifier channels, while the other contains the same number of shaping filters and threshold detection circuits.
Published: 2004

7. Towards microstrip detectors for synchrotron powder diffraction facilities

Author: François Fauth, Christian Brönnimann, Bruce D. Patterson, G. Maehlum, Philip Pattison, and H. Auderset
Subjects: Physics, Diffraction, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Synchrotron radiation, Synchrotron, law.invention, Optics, Beamline, law, Physics::Accelerator Physics, Angular resolution, business, Instrumentation, Powder diffraction, Swiss Light Source
Abstract: A major improvement of todays experimental techniques in powder diffraction can be achieved by using a massively parallel detection of diffraction patterns with arrays of solid-state detectors. In order to determine the feasibility of this technique, a test experiment was performed at the Swiss–Norwegian Beamline (SNBL) of the European Synchrotron Radiation Facility (ESRF). Diffraction patterns of previously characterized samples were first recorded with conventional equipment: in high-intensity mode with a single slit in front of the detector (Debye–Scherrer geometry) and at highest angular resolution with an analyzer crystal before the detector. Results were then compared to measurements performed with a double-sided silicon microstrip detector. Particular attention was placed on angular resolution and integrated intensities since these parameters are of most importance for structure determination from powder diffraction patterns. The results presented in this paper provide a basis for the design of a dedicated detector array for the synchrotron powder diffraction facility at the Swiss Light Source presently under construction at the Paul Scherrer Institute.
Published: 2000

8. Space resolution of a Si/Gd microstrip as linear position-sensitive detector for thermal neutrons

Author: G. Maehlum, Francesco Sacchetti, Caterina Petrillo, and M. Mancinelli
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Monte Carlo method, Neutron scattering, Neutron temperature, Microstrip, Optics, Nuclear magnetic resonance, Position (vector), Phase detector characteristic, business, Instrumentation, Beam (structure)
Abstract: A Si microstrip detector coupled to a Gd converter has been designed for operation as linear position-sensitive detector of thermal neutrons. Test measurements have been carried out on a first prototype. The measured space resolution is reported and discussed in comparison with the results of a Monte Carlo simulation. The space resolution of the Si microstrip detector, given by the response of the sensor to an ideal narrow incoming beam, has been also modeled by the Monte Carlo simulation program.
Published: 1999

9. Search for Bs0- oscillations

Author: W Adam, T Adye, I Ajinenko, G.D Alekseev, R Alemany, P.P Allport, S Almehed, U Amaldi, S Amato, P Andersson, A Andreazza, P Antilogus, W-D Apel, Y Arnoud, B Åsman, J-E Augustin, A Augustinus, P Baillon, P Bambade, F Barao, M Barbi, D.Y Bardin, G Barker, A Baroncelli, O Barring, M.J Bates, M Battaglia, M Baubillier, J Baudot, K-H Becks, M Begalli, P Beilliere, Yu Belokopytov, K Belous, A.C Benvenuti, C Berat, M Berggren, D Bertini, D Bertrand, M Besancon, F Bianchi, M Bigi, M.S Bilenky, P Billoir, M-A Bizouard, D Bloch, M Blume, M Bonesini, W Bonivento, M Boonekamp, P.S.L Booth, A.W Borgland, G Borisov, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, T.J.V Bowcock, I Bozovic, M Bozzo, P Branchini, K.D Brand, T Brenke, R.A Brenner, R.C.A Brown, P Bruckman, J-M Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, S Cabrera, M Caccia, M Calvi, A.J.Camacho Rozas, T Camporesi, V Canale, M Canepa, F Carena, L Carroll, C Caso, M.V.Castillo Gimenez, A Cattai, F.R Cavallo, V Chabaud, M Chapkin, Ph Charpentier, L Chaussard, P Checchia, G.A Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, J Chudoba, V Cindro, P Collins, M Colomer, R Contri, E Cortina, G Cosme, F Cossutti, J-H Cowell, H.B Crawley, D Crennell, G Crosetti, J.Cuevas Maestro, S Czellar, J Dahm, B Dalmagne, G Damgaard, P.D Dauncey, M Davenport, W Da Silva, A Deghorain, G.Della Ricca, P Delpierre, N Demaria, A De Angelis, W De Boer, S De Brabandere, C De Clercq, C De La Vaissiere, B De Lotto, A De Min, L De Paula, H Dijkstra, L Di Ciaccio, A Di Diodato, A Djannati, J Dolbeau, K Doroba, M Dracos, J Drees, K.-A Drees, M Dris, J-D Durand, D Edsall, R Ehret, G Eigen, T Ekelof, G Ekspong, M Elsing, J-P Engel, B Erzen, M.Espirito Santo, E Falk, G Fanourakis, D Fassouliotis, M Feindt, P Ferrari, A Ferrer, S Fichet, T.A Filippas, A Firestone, P.-A Fischer, H Foeth, E Fokitis, F Fontanelli, F Formenti, B Franek, A.G Frodesen, R Fruhwirth, F Fulda-Quenzer, J Fuster, A Galloni, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, U Gasparini, Ph Gavillet, E.N Gazis, D Gele, J-P Gerber, L Gerdyukov, R Gokieli, B Golob, P Goncalves, G Gopal, L Gorn, M Gorski, Yu Gouz, V Gracco, E Graziani, C Green, A Grefrath, P Gris, G Grosdidier, K Grzelak, M Gunther, J Guy, F Hahn, S Hahn, Z Hajduk, A Hallgren, K Hamacher, F.J Harris, V Hedberg, R Henriques, J.J Hernandez, P Herquet, H Herr, T.L Hessing, J.-M Heuser, E Higon, S-O Holmgren, P.J Holt, D Holthuizen, S Hoorelbeke, M Houlden, J Hrubec, K Huet, K Hultqvist, J.N Jackson, R Jacobsson, P Jalocha, R Janik, Ch Jarlskog, G Jarlskog, P Jarry, B Jean-Marie, E.K Johansson, L Jonsson, P Jonsson, C Joram, P Juillot, M Kaiser, F Kapusta, K Karafasoulis, E Karvelas, S Katsanevas, E.C Katsoufis, R Keranen, Yu Khokhlov, B.A Khomenko, N.N Khovanski, B King, N.J Kjaer, O Klapp, H Klein, P Kluit, D Knoblauch, B Koene, P Kokkinias, M Koratzinos, K Korcyl, V Kostioukhine, C Kourkoumelis, O Kouznetsov, M Krammer, C Kreuter, I Kronkvist, Z Krumstein, W Krupinski, P Kubinec, W Kucewicz, K Kurvinen, C Lacasta, I Laktineh, J.W Lamsa, L Lanceri, D.W Lane, P Langefeld, J-P Laugier, R Lauhakangas, G Leder, F Ledroit, V Lefebure, C.K Legan, A Leisos, R Leitner, J Lemonne, G Lenzen, V Lepeltier, T Lesiak, M Lethuillier, J Libby, D Liko, A Lipniacka, I Lippi, B Loerstad, J.G Loken, J.M Lopez, D Loukas, P Lutz, L Lyons, J MacNaughton, G Maehlum, J.R Mahon, A Maio, T.G.M Malmgren, V Malychev, F Mandl, J Marco, R Marco, B Marechal, M Margoni, J-C Marin, C Mariotti, A Markou, C Martinez-Rivero, F Martinez-Vidal, S Marti i Garcia, J Masik, F Matorras, C Matteuzzi, G Matthiae, M Mazzucato, M Mc Cubbin, R Mc Kay, R Mc Nulty, G Mc Pherson, J Medbo, M Merk, C Meroni, S Meyer, W.T Meyer, M Michelotto, E Migliore, L Mirabito, W.A Mitaroff, U Mjoernmark, T Moa, R Moeller, K Moenig, M.R Monge, P Morettini, H Mueller, K Muenich, M Mulders, L.M Mundim, W.J Murray, B Muryn, G Myatt, T Myklebust, F Naraghi, F.L Navarria, S Navas, K Nawrocki, P Negri, S Nemecek, W Neumann, N Neumeister, R Nicolaidou, B.S Nielsen, M Nieuwenhuizen, V Nikolaenko, M Nikolenko, P Niss, A Nomerotski, A Normand, A Nygren, W Oberschulte-Beckmann, V Obraztsov, A.G Olshevski, A Onofre, R Orava, G Orazi, S Ortuno, K Osterberg, A Ouraou, P Paganini, M Paganoni, S Paiano, R Pain, H Palka, Th.D Papadopoulou, K Papageorgiou, L Pape, C Parkes, F Parodi, U Parzefall, A Passeri, M Pegoraro, L Peralta, H Pernegger, M Pernicka, A Perrotta, C Petridou, A Petrolini, H.T Phillips, G Piana, F Pierre, M Pimenta, E Piotto, T Podobnik, O Podobrin, M.E Pol, G Polok, P Poropat, V Pozdniakov, P Privitera, N Pukhaeva, A Pullia, D Radojicic, S Ragazzi, H Rahmani, P.N Ratoff, A.L Read, M Reale, P Rebecchi, N.G Redaelli, M Regler, D Reid, R Reinhardt, P.B Renton, L.K Resvanis, F Richard, J Ridky, G Rinaudo, O Rohne, A Romero, P Ronchese, L Roos, E.I Rosenberg, P Rosinsky, P Roudeau, T Rovelli, W Ruckstuhl, V Ruhlmann-Kleider, A Ruiz, K Rybicki, H Saarikko, Y Sacquin, A Sadovsky, G Sajot, J Salt, M Sannino, H Schneider, U Schwickerath, M.A.E Schyns, G Sciolla, F Scuri, P Seager, Y Sedykh, A.M Segar, A Seitz, R Sekulin, L Serbelloni, R.C Shellard, A Sheridan, I Siccama, P Siegrist, R Silvestre, F Simonetto, A.N Sisakian, T.B Skaali, G Smadja, N Smirnov, O Smirnova, G.R Smith, O Solovianov, R Sosnowski, D Souza-Santos, T Spassov, E Spiriti, P Sponholz, S Squarcia, D Stampfer, C Stanescu, S Stanic, S Stapnes, I Stavitski, K Stevenson, A Stocchi, J Strauss, R Strub, B Stugu, M Szczekowski, M Szeptycka, T Tabarelli, J.P Tavernet, O Tchikilev, F Tegenfeldt, F Terranova, J Thomas, A Tilquin, J Timmermans, L.G Tkatchev, T Todorov, S Todorova, D.Z Toet, A Tomaradze, B Tome, A Tonazzo, L Tortora, G Transtromer, D Treille, G Tristram, A Trombini, C Troncon, A Tsirou, M-L Turluer, I.A Tyapkin, M Tyndel, S Tzamarias, B Ueberschaer, O Ullaland, V Uvarov, G Valenti, E Vallazza, G.W Van Apeldoorn, P Van Dam, J Van Eldik, A Van Lysebetten, N Vassilopoulos, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, L.S Vertogradov, D Vilanova, P Vincent, L Vitale, E Vlasov, A.S Vodopyanov, V Vrba, H Wahlen, C Walck, F Waldner, C Weiser, A.M Wetherell, D Wicke, J.H Wickens, M Wielers, G.R Wilkinson, W.S.C Williams, M Winter, M Witek, T Wlodek, J Yi, K Yip, O Yushchenko, F Zach, A Zaitsev, A Zalewska, P Zalewski, D Zavrtanik, E Zevgolatakos, N.I Zimin, G.C Zucchelli, and G Zumerle
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Bar (music), Large Electron–Positron Collider
Published: 1997

10. Search for stable heavy charged particles in e+e− collisions at , 161 and 172 GeV

Author: P. Abreu, W. Adam, T. Adye, I. Ajinenko, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, M. Barbi, G. Barbiellini, D.Y. Bardin, G. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, M-A. Bizouard, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, F. Djama, A. Djannati, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, L. Gerdyukov, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, A. Klovning, P. Kluit, P. Kokkinias, A. Konopliannikov, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, J.R. Mahon, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, M. Novak, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, T. Podobnik, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, P. Siegrist, R. Silvestre, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, O. Solovianov, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, I. Stavitski, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, E. Tcherniaev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, T. Wlodek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Time projection chamber, 010308 nuclear & particles physics, Electron–positron annihilation, Supersymmetry, 7. Clean energy, 01 natural sciences, Particle identification, Charged particle, Ring-imaging Cherenkov detector, Standard Model, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: A search for stable or long-lived heavy charged particles in e+e− interactions at energies of 130–136, 161 and 172 GeV has been performed using the data taken by the DELPHI experiment at LEP. The search is based on particle identification provided by the Time Projection Chamber and the Ring Imaging Cherenkov detector. Upper limits at 95% confidence level are derived on the cross-section for heavy long-lived pair-produced charge ±e and View the MathML source particles in the range of 0.4–2.3 pb for masses from 45 to 84 GeV/c2. Within supersymmetric extensions of the Standard Model, long-lived charginos with masses from 45 to 84 (80) GeV/c2 for high (low) sneutrino masses can be excluded at 95% confidence level. Left-handed (right-handed) long-lived or stable smuons and staus with masses between 45 and 68 (65) GeV/c2 can be excluded at 95% confidence level.
Published: 1997

11. Search for excited leptons in e+e− collisions at

Author: P. Abreu, W. Adam, T. Adye, I. Ajinenko, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, G. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, M-A. Bizouard, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, J. Chodoba, V. Chorowicz, V. Cindro, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dann, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, F. Djama, A. Djannati, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, L. Gerdyukov, R. Gokieli, B. Golob, C. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, A. Klovning, P. Kluit, P. Kokkinias, A. Konopliannikov, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, J.R. Mahon, A. Maio, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, T. Podobnik, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, P. Siegrist, R. Silvestre, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, I. Stavitski, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, T. Wlodek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Coupling, Nuclear and High Energy Physics, Particle physics, Missing energy, Luminosity (scattering theory), Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Electron, HERA, 01 natural sciences, 7. Clean energy, Luminosity, Nuclear physics, Pair production, Excited state, 0103 physical sciences, Computer Science::Mathematical Software, High Energy Physics::Experiment, Neutrino, 010306 general physics, Boson, Lepton
Abstract: We have searched for excited states of charged and neutral leptons, e∗, μ ∗ , τ ∗ and ν ∗ , in e+e− collisions at s =130 using the OPAL detector at LEP. No evidence for their existence was found. With the most common coupling assumptions, the final states from excited lepton pair production include l+l−γγ and l+l−WW (with the subsequent decay of the virtual W bosons). From the analysis of these final states, 95% confidence level lower mass limits of 66.5 GeV for e∗, 66.8 GeV for μ ∗ , 65.3 GeV for τ ∗ , 66.2 GeV for ν e ∗ , 66.5 GeV for ν μ ∗ and 64.7 GeV for ν τ ∗ are inferred. From the analysis of γγ final states with missing energy and using alternative coupling assignments which permit photonic ν ∗ decays, a 95% confidence level lower mass limit of 65.0 GeV for each ν ∗ flavour is inferred. From the analysis of the l+l−γ, acoplanar lepton pair, and single γ final states expected from excited lepton single production, upper limits on f Λ (ratio of the coupling to the compositeness scale) are determined for excited lepton masses up to the kinematic limit.
Published: 1997

12. Search for neutralinos, scalar leptons and scalar quarks in e+e− interactions at

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, P. Andersson, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, J.R. Mahon, A. Maio, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, A. Miagkov, M. Michelotto, E. Migliore, L. Mirabito, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, I. Siccama, P. Siegrist, R. Silvestre, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, K. Stevenson, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, E. Tcherniaev, O. Tchikilev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear physics, Quark, Nuclear and High Energy Physics, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, High Energy Physics::Phenomenology, Scalar (physics), High Energy Physics::Experiment, Supersymmetry, Lepton
Abstract: Using data accumulated by DELPHI during the November 1995 LEP run at 130–136 GeV, searchs have been made for events with jets or leptons in conjunction with missing momentum. The results are interpreted in terms of limits on the production of neutralinos, scalar leptons, and scalar quarks.
Published: 1996

13. Search for the lightest chargino at GeV

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, M. Gibbs, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, A. Maio, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, M. Novak, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, K. Stevenson, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, E. Tcherniaev, O. Tchikilev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Missing energy, Pair production, Chargino, Electron–positron annihilation, Root (chord), Supersymmetry, Minimal Supersymmetric Standard Model, Standard Model
Abstract: A search for pair production of the lightest chargino at root-s = 130.4 and 136.3 GeV has been carried out using the data sample corresponding to the 5.92 pb(-1) recorded by the DELPHI detector dur ...
Published: 1996

14. Search for anomalous production of single photons at and 136 GeV

Author: W Adam, T Adye, E Agasi, I Ajinenko, R Aleksan, G.D Alekseev, R Alemany, P.P Allport, S Almehed, U Amaldi, S Amato, A Andreazza, M.L Andrieux, P Antilogus, W-D Apel, Y Arnoud, B Åsman, J-E Augustin, A Augustinus, P Baillon, P Bambade, F Barao, R Barate, M Barbi, G Barbiellini, D.Y Bardin, A Baroncelli, O Barring, J.A Barrio, W Bartl, M.J Bates, M Battaglia, M Baubillier, J Baudot, K-H Becks, M Begalli, P Beilliere, Yu Belokopytov, K Belous, A.C Benvenuti, M Berggren, D Bertini, D Bertrand, F Bianchi, M Bigi, M.S Bilenky, P Billoir, D Bloch, M Blume, T Bolognese, M Bonesini, W Bonivento, P.S.L Booth, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, T.J.V Bowcock, M Bozzo, P Branchini, K.D Brand, T Brenke, R.A Brenner, C Bricman, R.C.A Brown, P Bruckman, J-M Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, A Buys, S Cabrera, M Caccia, M Calvi, A.J Camacho Rozas, T Camporesi, V Canale, M Canepa, K Cankocak, F Cao, F Carena, L Carroll, C Caso, M.V Castillo Gimenez, A Cattai, F.R Cavallo, V Chabaud, Ph Charpentier, L Chaussard, J Chauveau, P Checchia, G.A Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, V Cindro, P Collins, J.L Contreras, R Contri, E Cortina, G Cosme, F Cossutti, H.B Crawley, D Crennell, G Crosetti, J Cuevas Maestro, S Czellar, E Dahl-Jensen, J Dahm, B Dalmagne, M Dam, G Damgaard, P.D Dauncey, M Davenport, W Da Silva, C Defoix, A Deghorain, G Della Ricca, P Delpierre, N Demaria, A De Angelis, W De Boer, S De Brabandere, C De Clercq, C De La Vaissiere, B De Lotto, A De Min, L De Paula, C De Saint-Jean, H Dijkstra, L Di Ciaccio, F Djama, J Dolbeau, M Donszelmann, K Doroba, M Dracos, J Drees, K.-A Drees, M Dris, J-D Durand, D Edsall, R Ehret, G Eigen, T Ekelof, G Ekspong, M Elsing, J-P Engel, B Erzen, M Espirito Santo, E Falk, D Fassouliotis, M Feindt, A Fenyuk, A Ferrer, S Fichet, T.A Filippas, A Firestone, P.-A Fischer, H Foeth, E Fokitis, F Fontanelli, F Formenti, B Franek, P Frenkiel, D.C Fries, A.G Frodesen, R Fruhwirth, F Fulda-Quenzer, J Fuster, A Galloni, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, U Gasparini, Ph Gavillet, E.N Gazis, D Gele, J-P Gerber, M Gibbs, R Gokieli, B Golob, G Gopal, L Gorn, M Gorski, Yu Gouz, V Gracco, E Graziani, G Grosdidier, K Grzelak, S Gumenyuk, P Gunnarsson, M Gunther, J Guy, F Hahn, S Hahn, Z Hajduk, A Hallgren, K Hamacher, W Hao, F.J Harris, V Hedberg, R Henriques, J.J Hernandez, P Herquet, H Herr, T.L Hessing, E Higon, H.J Hilke, T.S Hill, S-O Holmgren, P.J Holt, D Holthuizen, S Hoorelbeke, M Houlden, J Hrubec, K Huet, K Hultqvist, J.N Jackson, R Jacobsson, P Jalocha, R Janik, Ch Jarlskog, G Jarlskog, P Jarry, B Jean-Marie, E.K Johansson, L Jonsson, P Jonsson, C Joram, P Juillot, M Kaiser, F Kapusta, K Karafasoulis, M Karlsson, E Karvelas, S Katsanevas, E.C Katsoufis, R Keranen, Yu Khokhlov, B.A Khomenko, N.N Khovanski, B King, N.J Kjaer, H Klein, A Klovning, P Kluit, B Koene, P Kokkinias, M Koratzinos, K Korcyl, V Kostioukhine, C Kourkoumelis, O Kouznetsov, P.-H Kramer, M Krammer, C Kreuter, I Kronkvist, Z Krumstein, W Krupinski, P Kubinec, W Kucewicz, K Kurvinen, C Lacasta, I Laktineh, S Lamblot, J.W Lamsa, L Lanceri, D.W Lane, P Langefeld, V Lapin, I Last, J-P Laugier, R Lauhakangas, G Leder, F Ledroit, V Lefebure, C.K Legan, R Leitner, Y Lemoigne, J Lemonne, G Lenzen, V Lepeltier, T Lesiak, J Libby, D Liko, R Lindner, A Lipniacka, I Lippi, B Loerstad, J.G Loken, J.M Lopez, D Loukas, P Lutz, L Lyons, J MacNaughton, G Maehlum, A Maio, V Malychev, J Marco, R Marco, B Marechal, M Margoni, J-C Marin, C Mariotti, A Markou, T Maron, C Martinez-Rivero, F Martinez-Vidal, S Marti i Garcia, F Matorras, C Matteuzzi, G Matthiae, M Mazzucato, M Mc Cubbin, R Mc Kay, R Mc Nulty, J Medbo, M Merk, C Meroni, S Meyer, W.T Meyer, A Miagkov, M Michelotto, E Migliore, L Mirabito, W.A Mitaroff, U Mjoernmark, T Moa, R Moeller, K Moenig, M.R Monge, P Morettini, H Mueller, L.M Mundim, W.J Murray, B Muryn, G Myatt, F Naraghi, F.L Navarria, S Navas, K Nawrocki, P Negri, S Nemecek, W Neumann, N Neumeister, R Nicolaidou, B.S Nielsen, M Nieuwenhuizen, V Nikolaenko, P Niss, A Nomerotski, A Normand, M Novak, W Oberschulte-Beckmann, V Obraztsov, A.G Olshevski, A Onofre, R Orava, K Osterberg, A Ouraou, P Paganini, M Paganoni, P Pages, H Palka, Th.D Papadopoulou, K Papageorgiou, L Pape, C Parkes, F Parodi, A Passeri, M Pegoraro, L Peralta, H Pernegger, M Pernicka, A Perrotta, C Petridou, A Petrolini, M Petrovyck, H.T Phillips, G Piana, F Pierre, M Pimenta, M Pindo, S Plaszczynski, O Podobrin, M.E Pol, G Polok, P Poropat, V Pozdniakov, M Prest, P Privitera, N Pukhaeva, A Pullia, D Radojicic, S Ragazzi, H Rahmani, J Rames, P.N Ratoff, A.L Read, M Reale, P Rebecchi, N.G Redaelli, M Regler, D Reid, P.B Renton, L.K Resvanis, F Richard, J Richardson, J Ridky, G Rinaudo, I Ripp, A Romero, I Roncagliolo, P Ronchese, L Roos, E.I Rosenberg, E Rosso, P Roudeau, T Rovelli, W Ruckstuhl, V Ruhlmann-Kleider, A Ruiz, K Rybicki, H Saarikko, Y Sacquin, A Sadovsky, O Sahr, G Sajot, J Salt, J Sanchez, M Sannino, M Schimmelpfennig, H Schneider, U Schwickerath, M.A.E Schyns, G Sciolla, F Scuri, P Seager, Y Sedykh, A.M Segar, A Seitz, R Sekulin, L Serbelloni, R.C Shellard, I Siccama, P Siegrist, S Simonetti, F Simonetto, A.N Sisakian, B Sitar, T.B Skaali, G Smadja, N Smirnov, O Smirnova, G.R Smith, R Sosnowski, D Souza-Santos, T Spassov, E Spiriti, P Sponholz, S Squarcia, C Stanescu, S Stapnes, I Stavitski, K Stevenson, F Stichelbaut, A Stocchi, J Strauss, R Strub, B Stugu, M Szczekowski, M Szeptycka, T Tabarelli, J.P Tavernet, O Tchikilev, J Thomas, A Tilquin, J Timmermans, L.G Tkatchev, T Todorov, S Todorova, D.Z Toet, A Tomaradze, B Tome, A Tonazzo, L Tortora, G Transtromer, D Treille, W Trischuk, G Tristram, A Trombini, C Troncon, A Tsirou, M-L Turluer, I.A Tyapkin, M Tyndel, S Tzamarias, B Ueberschaer, O Ullaland, V Uvarov, G Valenti, E Vallazza, G.W Van Apeldoorn, P Van Dam, W.K Van Doninck, J Van Eldik, N Vassilopoulos, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, L.S Vertogradov, D Vilanova, P Vincent, L Vitale, E Vlasov, A.S Vodopyanov, V Vrba, H Wahlen, C Walck, M Weierstall, P Weilhammer, C Weiser, A.M Wetherell, D Wicke, J.H Wickens, M Wielers, G.R Wilkinson, W.S.C Williams, M Winter, M Witek, K Woschnagg, K Yip, O Yushchenko, F Zach, A Zaitsev, A Zalewska, P Zalewski, D Zavrtanik, E Zevgolatakos, N.I Zimin, M Zito, D Zontar, G.C Zucchelli, and G Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, Photon, Luminosity (scattering theory), 010308 nuclear & particles physics, Electron–positron annihilation, Detector, 01 natural sciences, Standard Model, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Neutrino, 010306 general physics
Abstract: This letter reports the results of the measurement of single photon production in the reaction e+e− → γ+ invisible particles at centre-of-mass energies View the MathML source and 136 GeV and an integrated luminosity of 5.83 pb−1, collected with the DELPHI detector at LEP. The signal is compatible with the prediction of the Standard Model for the process View the MathML source, and the number of neutrino families has been determined to be Nν = 3.1 ± 0.6. Limits have been derived on anomalous neutral gauge boson couplings and on compositeness in the framework of a specific model.
Published: 1996

15. Study of radiative leptonic events with hard photons and search for excited charged leptons at GeV

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, G. Barbiellini, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, J. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, M. Gibbs, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, S. Lamblot, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, A. Maio, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, A. Miagkov, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, M. Novak, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, M. Pindo, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, R. Sosnowski, D. Souza-Santos, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, K. Stevenson, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, O. Tchikilev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, HERA, 01 natural sciences, 7. Clean energy, Standard Model, Nuclear physics, Excited state, 0103 physical sciences, Large Electron–Positron Collider, Radiative transfer, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: During the last 1995 data acquisition period at LEP, the DELPHI experiment collected an integrated luminosity of 5.9 pb−1 at centre-of-mass energies of 130 GeV and 136 GeV. Radiative leptonic events (e, μ, τ) with high energy photons were studied and compared to Standard Model predictions. The data were used to search for charged excited leptons decaying through an electromagnetic transition. No significant signal was found. From the search for pair produced excited leptons, the limits View the MathML source, View the MathML source and View the MathML source at 95% confidence level were established. For single excited lepton production, upper limits on the ratio View the MathML source of the coupling of the excited charged lepton to its mass were derived.
Published: 1996

16. Charged particle multiplicity in e+e− interactions at

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, S. Blyth, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, S. Bosworth, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, L. Brillault, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Bursgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J.Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V.Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, G. Crosetti, J.Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G.Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, Y. Dufour, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, N. Ershaidat, B. Erzen, M.Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, L. Gerdyukov, M. Gibbs, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khohklov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, S. Lamblot, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, A. Maio, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M.Mc Cubbin, R.Mc Kay, R.Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, M. Pindo, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, O. Solovianov, R. Sosnowski, D. Souza-Santos, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, O. Tchikilev, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C.Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, 01 natural sciences, Lower energy, Charged particle, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics
Abstract: From the data collected by DELPHI at LEP in autumn 1995, the multiplicity of charged particles at a hadronic energy of 130 GeV has been measured to be 〈nch〉 = 23.84 ± 0.51 (stat) ± 0.52 (syst). When compared to lower energy data, the value measured is consistent with the evolution predicted by QCD with corrections at next-to-leading order, for a value αs(130 GeV) = 0.105 ± 0.003 (stat) ± 0.008 (syst).
Published: 1996

17. Mean lifetime of theB s 0 meson

Author: W.S.C. Williams, Lucio Cerrito, V. Chorowicz, M. Verlato, G. D. Alekseev, B. Loerstad, G. Valenti, P. Niss, A. Galloni, G. Borisov, A. N. Sisakian, A. Sadovsky, Mario Sannino, M. Mazzucato, W. Krupinski, R. Sosnowski, P. H. Kramer, Pierre Billoir, F. Pierre, Vincent Hedberg, A. Ferrer, D. W. Lane, L. S. Vertogradov, M. Mc Cubbin, K. Hultqvist, Rafael Marco, M. Baubillier, Tiziano Camporesi, H. Palka, J. W. Lamsa, Robert S. Brown, H. J. Hilke, Lydia Roos, Borge Svane Nielsen, R. Moeller, A. G. Frodesen, M. Blume, W. Oberschulte-Beckmann, G. Ekspong, Manfred Krammer, P. J. Holt, N. G. Redaelli, F. Barao, S. Todorova, A. Deghorain, A. M. Zaitsev, Alexander Vodopyanov, R. C. Shellard, L. Di Ciaccio, Z. Hajduk, V. Nikolaenko, C. Martinez-Rivero, J. Drees, E. Higon, G. Vegni, Maciej Górski, S. Bosworth, S. De Brabandere, Krzysztof Doroba, Chiara Meroni, J. P. Tavernet, Norbert Neumeister, P. N. Ratoff, S. Simonetti, Evangelos Gazis, M. Michelotto, M. Chapkin, L. K. Resvanis, Marco Bozzo, A. M. Segar, F. Scuri, J. L. Contreras, M. Barbi, P. V. Chliapnikov, A. M. Wetherell, L. Lanceri, Stéphane Plaszczynski, F. Bianchi, P. Bruckman, O. Podobrin, Vaclav Vrba, Hans Dijkstra, M. Begalli, Massimo Caccia, P. Frenkiel, Matteo Pegoraro, M. Dracos, P. A. Fischer, M. J. Bates, F. Fontanelli, J. Dolbeau, P. Bambade, P.S.L. Booth, M. Bonesini, T. J. V. Bowcock, S. Cabrera, C. Gaspar, C. Kreuter, Peter Kluit, Patrick Jarry, G. Rinaudo, J. Salt, F. Simonetto, P. Juillot, S. Marti i Garcia, D. Edsall, G. Grosdidier, S-O. Holmgren, J. Baudot, B. Jean-Marie, T. L. Hessing, E. Karvelas, A. B. Fenyuk, G. C. Zucchelli, C. Walck, Charles Bricman, A. Firestone, A. Klovning, Y. Arnoud, U. Mjoernmark, Toralf Bernhard Skaali, T. Spassov, A. Buys, G. Leder, W. Neumann, Ugo Gasparini, D. Gamba, Klaus Hamacher, Alessandra Romero, M. L. Andrieux, A. Normand, C. Weiser, B. Åsman, V. Lepeltier, H. T. Phillips, Vladimir Cindro, P. Pages, P. Paganini, I. A. Tyapkin, R. A. Brenner, M. Witek, D. Vilanova, K. A. Drees, A. Ruiz, J. Chudova, Sandor Czellar, F. Verbeure, T. Brenke, J. Cuevas Maestro, M. Zito, M. A E Schyns, F. Kapusta, D. J. Holthuizen, M. Petrovyck, J-C. Marin, J. P. Engel, M. V. Castillo Gimenez, P. Abreu, Guido Barbiellini, Paolo Checchia, Ph. Gavillet, Louis Lyons, I. V. Ajinenko, M. Novak, K. Grzelak, M. Prest, J. Guy, B. Erzen, G. Cosme, R. Gokieli, V. Lefebure, R. Aleksan, Chiara Mariotti, D. Crennell, G. Polok, Yu. Gouz, Allan Hallgren, P. Kubinec, Juan Fuster, E. Agasi, P. Gunnarsson, B. Stugu, D. Gele, A. Onofre, Spyros Tzamarias, O. Tchikilev, Phillip Allport, Antonio Baroncelli, S. Gumenyuk, Tim Adye, P. Seager, J. J. Hernandez, M. Kaiser, J. MacNaughton, R. Barate, G. Della Ricca, E. I. Rosenberg, S. Hahn, Francesca Romana Cavallo, M. Gandelman, Th. D. Papadopoulou, G. Sajot, Ernesto Migliore, M. Gibbs, F. Naraghi, F. Mandl, G. Smadja, J. Chauveau, B. Dalmagne, Paul Dauncey, N. Demaria, G. Damgaard, Clara Troncon, Josef Strauss, S. Hoorelbeke, Paolo Ronchese, V. Chabaud, P. Delpierre, Claire Bourdarios, Luiz Mundim, N. N. Khovanski, N. J. Kjaer, M. Nieuwenhuizen, Juan Abel Barrio, K. Kurvinen, D. Wicke, B. Golob, A. Trombini, Demetrios Loukas, V. V. Lapin, D. Bertrand, S. C. Blyth, Stefano Ragazzi, G. Wilkinson, J. M. Lopez, A. Tonazzo, A. G. Olshevski, M. Merk, L. Chaussard, M. Davenport, Mogens Dam, Javier Sánchez, W. Bartl, M. Espirito Santo, W. Venus, A. Pullia, Mingshui Chen, C. De Clercq, W. J. Murray, Y. Sacquin, Piotr Zalewski, G. Myatt, Kathy Huet, Valeriy Pozdniakov, G. Tristram, R. Sekulin, F. Formenti, F. Cao, R. Alemany, U. Schwickerath, T. Bolognese, J. P. Laugier, R. Nicolaidou, I. Kronkvist, Sandra Amato, Per Jönsson, M. Pindo, K. D. Brand, Andrea Perrotta, I. Stavitski, Maria Roberta Monge, J. P. Gerber, W. Bonivento, M. Pimenta, Paul Baillon, D. Zontar, B. A. Khomenko, Alexander Lincoln Read, N. Ershaidat, Marek Szczekowski, Z. Krumstein, A. De Min, A. Stocchi, V.A. Uvarov, Francesco Navarria, I. Siccama, N. I. Zimin, Kerem Cankocak, T. Moa, Imad Baptiste Laktineh, M. Szeptycka, Konstantinos Papageorgiou, A. Tomaradze, A. Zalewska, V. Gracco, W. T. Meyer, Jacques Lemonne, L. Tortora, F. J. Harris, P. Langefeld, Cristian Stanescu, P. Branchini, O. Kouznetsov, E. K. Johansson, R. Mc Nulty, R. Orava, C. Bosio, Wolfgang Adam, E. Rosso, H. Klein, H. Schneider, E. Cortina, Steinar Stapnes, W. Ruckstuhl, J. N. Jackson, S. Squarcia, H. Saarikko, T. Tabarelli, M. Tyndel, K. Osterberg, Martino Margoni, G. Maehlum, Laurent Mirabito, T. Maron, L. Gorn, S. Lamblot, Carlos Lacasta, Krzysztof A. Rybicki, R. Lauhakangas, Ph. Charpentier, E. Fokitis, N. Vassilopoulos, P. Kokkinias, Yu. Belokopytov, C. K. Legan, G. Eigen, H. Rahmani, B. Bouquet, M. S. Bilenky, Klaus Moenig, R. Henriques, C. Joram, M. Gunther, M. Donszelmann, D. Fassouliotis, Maria Elena Pol, Ariella Cattai, V. Malychev, S. Katsanevas, F. Ledroit, Fares Djama, Danilo Zavrtanik, A. Passeri, D. Y. Bardin, M. Karlsson, Oxana Smirnova, T. Todorov, M. Wielers, K. Karafasoulis, Rupert Leitner, G. Piana, G. Matthiae, O. Ullaland, L.J. Carroll, L. Bugge, Leif J. Jönsson, K. Woschnagg, T. A. Filippas, A. J. Camacho Rozas, G. Gopal, Fabrizio Parodi, D. Z. Toet, P. Siegrist, M. A. Houlden, M. L. Turluer, D. Reid, J. E. Augustin, M. Regler, Andrei Nomerotski, William Trischuk, A. Markou, J. Medbo, I. Ripp, L. De Paula, E. Falk, J.D. Richardson, R. Janik, P. Roudeau, P. Herquet, Gianni Zumerle, A. Maio, R. Contri, Fabio Cossutti, R. Ehret, P. Poropat, T. Burgsmueller, Andromachi Tsirou, Yu. Sedykh, B. Franek, P. Weilhammer, Manolis Dris, Richard Jacobsson, Andre Augustinus, H. Mueller, A. Petrolini, B. De Lotto, Evgueni Vlasov, T. Lesiak, F. Zach, Alberto Benvenuti, S. S. Meyer, C. Caso, H. Herr, L. G. Tkatchev, A. Seitz, I. Lippi, J. H. Wickens, B. Muryn, Marco Paganoni, M. Berggren, Tiziano Rovelli, J. Masik, G. Cresetti, L. Vitale, A. P. Ostankov, F. Martinez-Vidal, D. Radojicic, H. B. Crawley, P. Lutz, L. Brillault, Luc Pape, N. Pukhaeva, W. Da Silva, W. A. Mitaroff, F. Richard, P. Chochula, P. Vincent, C. Matteuzzi, S. Almehed, R. Chierici, F. Hahn, J. Dahm, B. Tome, P. Antilogus, C. Vander Velde, F. Stichelbaut, P. Buschmann, R. Mc Kay, A. Andreazza, R. Keranen, Francisco Matorras, D. Souza-Santos, G. A. Chelkov, Ugo Amaldi, W. Kucewicz, W. De Boer, Marc Winter, H. Wahlen, V. Ruhlmann-Kleider, E. Zevgolatakos, K. H. Becks, E. Vallazza, G. Sciolla, M. Battaglia, W. Van Doninck, J. Garcia, V. Obraztsov, T. Buran, Markus Elsing, I. Roncagliolo, R. Zuberi, Olga Botner, Krzysztof Korcyl, G. Transtromer, Carmen García, C. Defoix, F. Fulda-Quenzer, E. Graziani, J. M. Brunet, H. Foeth, B. Ueberschaer, A. De Angelis, P. Collins, Maurizio Canepa, Daniel Bloch, Ahmimed Ouraou, M. Feindt, S. Sánchez Navas, P. Negri, P. Sponholz, Göran Jarlskog, Ch. Jarlskog, W. D. Apel, F. Carena, P. B. Renton, E. Spiriti, D. C. Fries, B. Marechal, E. C. Katsoufis, Marta Calvi, Vincenzo Canale, Geoffrey Smith, M. Pernicka, Jesus Marco, G. Lenzen, R. Strub, V. Kostioukhine, M. Koratzinos, Dietrich Liko, P. Privitera, J. Van Eldik, Heinz Pernegger, T. S. Hill, Chariclia Petridou, M. Schimmelpfennig, P. Rebecchi, Branislav Sitar, M. Reale, Daniel Treille, M. Bigi, G. W. Van Apeldoorn, L. Ventura, K. Yip, J. Ridky, R. Lindner, Y. Lemoigne, C. Parkes, Nikita Smirnov, M. Weierstall, Christine Kourkoumelis, E. Dahl-Jensen, P. Van Dam, C. De La Vaissiere, A. Tilquin, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, A. Lipniacka, E. Boudinov, B. Koene, Paolo Morettini, J. G. Loken, C. De Saint-Jean, P. Beilliere, Krzysztof Nawrocki, W. Hao, O. Barring, and Tord Ekelof
Subjects: Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Hadron, Decay length, Invariant mass, Probability density distribution
Abstract: This paper presents an update of the measurement of the mean lifetime of theBs0 meson. CombiningDs−l,Ds−h,φ−l and inclusiveDs final states from the 3.2 million hadronic Z decays collected by DELPHI between 1991 and 1994, theBs0 mean lifetime was measured to be:τ(Bs0)=1.67±0.14 ps.
Published: 1996

18. A measurement of B+ and B0 lifetimes using $$\bar D\ell ^ + $$ events

Author: A. G. Olshevski, K. Stepaniak, H. Furstenau, Maria Roberta Monge, A. Zalewska, W. T. Meyer, M. Feindt, S. Sánchez Navas, P. Negri, C. Vander Velde, Jacques Lemonne, F. Stichelbaut, Tord Ekelof, H. Staeck, G. A. Chelkov, Ugo Amaldi, W. De Boer, E. Zevgolatakos, Göran Jarlskog, A. N. Sisakian, R. Mc Kay, Laurent Mirabito, A. Andreazza, B. Loerstad, G. Sciolla, O. Podobrin, A. Sadovsky, Ugo Gasparini, W. D. Apel, Luis Peralta, F. Kapusta, W. Van Doninck, R. Sosnowski, P. Vincent, F. Naraghi, K. A. Drees, T. Todorov, M. Wielers, Guido Barbiellini, J. Guy, A. Lopez-Fernandez, Dietrich Liko, P. Privitera, Jorge-Armando Benitez Garcia, Manfred Krammer, Robert S. Brown, J. E. Augustin, A. Pullia, Z. Krumstein, A. Baroncelli, Tim Adye, C. Zacharatou, M. Michelotto, O. Yushchenko, R. Keranen, Francisco Matorras, D. Gillespie, Chariclia Petridou, A. Galloni, D. Souza-Santos, R. Sekulin, S. O. Holmgren, L. S. Vertogradov, M. L. Turluer, D. Reid, Klaus Hamacher, P. Kubinec, Clara Troncon, J. P. Tavernet, Branislav Sitar, V. Obraztsov, Daniel Treille, M. Bigi, G. Vegni, G. Valenti, G. W. Van Apeldoorn, A. De Min, A. Trombini, I. Roncagliolo, J. Ridky, T. Moa, G. Maehlum, Matteo Pegoraro, W. Oberschulte-Beckmann, R. A. Brenner, S. J. Alvsvaag, E. Agasi, I. Siccama, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, Gianni Zumerle, Stefano Ragazzi, C. Kreuter, C. Parkes, P. Van Dam, F. Formenti, Nikita Smirnov, F. Pierre, L. Ventura, K. Yip, Y. Lemoigne, Vincent Hedberg, D. W. Lane, C. Caso, M. Battaglia, P. Poropat, G. Sajot, Fares Djama, A. M. Segar, F. Cao, Andromachi Tsirou, F. Fontanelli, S. Marti i Garcia, D. Edsall, G. Grosdidier, K. D. Brand, N. I. Zimin, G. Ekspong, I. Lippi, William Trischuk, A. Markou, J. Dolbeau, O. Smirnova, Patrick Jarry, G. Rinaudo, Marek Szczekowski, Alessandra Romero, Andre Augustinus, A. Wehr, J. P. Gerber, W. Neumann, W. Kucewicz, P. N. Ratoff, Marc Winter, F. Carena, S. Simonetti, Tiziano Rovelli, M. Begalli, M. Reale, Mogens Dam, J. H. Wickens, G. Borisov, R. Henriques, C. De La Vaissiere, A. Ruiz, Tiziano Camporesi, D. Vilanova, Y. Dufour, M. A E Schyns, J. M. Lopez, Themistocles Bowcock, Mariusz Witek, N. Ershaidat, A. Ferrer, V. Bocci, J-C. Marin, P. Bambade, B. Muryn, M. Baubillier, Achille Stocchi, P.S.L. Booth, Marco Paganoni, Jose Luis Contreras, Charles Bricman, H. B. Crawley, A. Tomaradze, W.S.C. Williams, M. Weierstall, B. Erzen, R. Gokieli, M. Gunther, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, M. Pernicka, A. Onofre, Rupert Leitner, G. Piana, E. K. Johansson, G. Matthiae, Steinar Stapnes, F. Zach, H. Wahlen, Borge Svane Nielsen, Jesus Marco, G. Lenzen, R. Strub, C. Joram, A. Tilquin, Josef Strauss, O. Kouznetsov, Sandor Czellar, G. Polok, V. Chabaud, W. Venus, L. Vitale, D. Radojicic, Lucio Cerrito, V. Chorowicz, L. Brillault, Pawel Jalocha, Barry King, J. P. Engel, M. V. Castillo Gimenez, J. H. Koehne, E. Spiriti, Stanislav Nemecek, R. Frühwirth, J. Timmermans, N. Pukhaeva, J. Dahm, Yu. Gouz, M. Davenport, P. Herquet, P. Niss, N. Vassilopoulos, Luc Pape, Alexander Vodopyanov, F. Bianchi, Martino Margoni, E. Fokitis, G. D. Alekseev, Christine Kourkoumelis, E. Dahl-Jensen, V. Malychev, E. I. Rosenberg, K. Kurvinen, G. Cosme, E. Rosso, H. Klein, K. Osterberg, P. Carrilho, J. J. Hernandez, S. De Brabandere, R. Nicolaidou, R. Contri, D. Wicke, Javier Sánchez, P. J. Holt, N. G. Redaelli, Marco Bozzo, Mario Sannino, Ernesto Migliore, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, B. Dalmagne, M. Verlato, Krzysztof Doroba, Chiara Meroni, Louis Lyons, R. Aleksan, P. Delpierre, P. Lutz, V. Ronjin, F. Martinez-Vidal, V. Kostioukhine, M. Koratzinos, E. Karvelas, P. Bruckman, A. Maio, C. Martinez-Rivero, L. Bugge, Paul Dauncey, N. Demaria, G. Damgaard, I. Kronkvist, M. Mazzucato, F. Simonetto, K. Hultqvist, A. Lipniacka, A. G. Frodesen, Maria Elena Pol, Milos Lokajicek, S. Katsanevas, R. Lindner, J. Cuevas Maestro, Demetrios Loukas, G. Leder, G. Myatt, J.D. Richardson, Richard Jacobsson, B. Åsman, A. Petrolini, W. Krupinski, A. J. Camacho Rozas, D. Z. Toet, P. Siegrist, P. Frenkiel, Peter Kluit, M. J. Bates, Manolis Dris, M. Gibbs, V. Gracco, F. Waldner, B. De Lotto, P. Roudeau, G. Crosetti, Evgueni Vlasov, V. Lefebure, Z. Hajduk, D. Crennell, F. Mandl, D. Bertrand, L. Tortora, F. J. Harris, I. Ripp, R. Janik, A. Klovning, Y. Arnoud, U. Mjoernmark, C. Bosio, H. J. Hilke, P. B. Renton, R. Moeller, H. Herr, Paolo Ronchese, Maciej Górski, D. Y. Bardin, Alberto Benvenuti, L. G. Tkatchev, M. Karlsson, N. J. Kjaer, V. Nikolaenko, Carlos Lacasta, T. A. Filippas, M. Regler, A. Seitz, D. J. Holthuizen, L. K. Resvanis, B. Tome, P. Antilogus, B. Koene, E. Cortina, D. C. Fries, Massimo Caccia, J. Baudot, C. Walck, M. Berggren, Toralf Bernhard Skaali, T. Spassov, D. Gamba, Y. Sacquin, Oleg Solovyanov, R. Lauhakangas, Ph. Charpentier, H. T. Phillips, Vladimir Cindro, W. Ruckstuhl, M. L. Andrieux, T. L. Hessing, P. V. Chliapnikov, R. Ehret, G. Tristram, Yu. Sedykh, P. Juillot, H. Mueller, Paolo Morettini, B. Marechal, E. C. Katsoufis, J. G. Loken, C. De Saint-Jean, P. Beilliere, Wolfgang Adam, Marta Calvi, Klaus Moenig, Fabrizio Parodi, F. Dupont, A. Normand, F. Verbeure, M. S. Bilenky, Vincenzo Canale, Geoffrey Smith, M. A. Houlden, L.J. Carroll, A. Passeri, Yu. Belokopytov, M. Donszelmann, R. Barate, G. E. Kalmus, Danilo Zavrtanik, H. Palka, J. Medbo, Andrea Perrotta, Fabio Cossutti, W. Hao, P. Weilhammer, J. W. Lamsa, Jan Krolikowski, Luiz Mundim, N. N. Khovanski, W. Bartl, M. Blume, F. Barao, T. Lesiak, B. Stugu, M. A. Lopez Aguera, S. Lamblot, W. Da Silva, M. Gandelman, Phillip Allport, G. Della Ricca, W. A. Mitaroff, Th. D. Papadopoulou, G. Smadja, J. Van Eldik, R. Orava, Heinz Pernegger, G. Eigen, O. Barring, T. S. Hill, J. P. Laugier, E. Higon, S. C. Blyth, G. Wilkinson, S. Bosworth, B. Bouquet, F. Richard, P. Chochula, C. Matteuzzi, A. Daum, S. Ueberschaer, Cristian Stanescu, M. Hahn, S. Almehed, P. Branchini, R. Chierici, M. Pimenta, B. A. Khomenko, H. Schneider, F. Hahn, F. Scuri, R. Mc Nulty, A. M. Wetherell, Francesco Navarria, H. De Boeck, L. Lanceri, Stéphane Plaszczynski, P. Langefeld, Gary John Barker, B. Jean-Marie, M. Tyndel, K. Woschnagg, T. Maron, P. Abreu, A. Firestone, G. Gopal, D. Gele, A. Buys, L. De Paula, L. Gorn, E. Falk, I. Stavitski, Juan Abel Barrio, P. Pages, M. Zito, Paul Baillon, Sandra Amato, D. Zontar, Alexander Lincoln Read, M. Szeptycka, Chiara Mariotti, M. Prest, R. Mc Cubbin, Allan Hallgren, S. Hahn, Francesca Romana Cavallo, Imad Baptiste Laktineh, U. Haedinger, C. De Clercq, S. Squarcia, H. Saarikko, T. Tabarelli, W. J. Murray, P. Rebecchi, H. Rahmani, D. Fassouliotis, Ariella Cattai, F. Ledroit, J. Fuster, O. Ullaland, Leif J. Jönsson, Andrei Nomerotski, B. Franek, Lydia Roos, J. Drees, Evangelos Gazis, M. Dracos, L. Chaussard, P. A. Fischer, P. Joannou, J. Chauveau, I. A. Tyapkin, I. V. Ajinenko, M. Bonesini, Kathy Huet, Valeriy Pozdniakov, T. Bolognese, Per Jönsson, W. Bonivento, Kerem Cankocak, Piotr Zalewski, V.A. Uvarov, J. N. Jackson, B. Golob, T. Buran, Markus Elsing, J. Rames, P. Kokkinias, C. K. Legan, R. Zuberi, Olga Botner, P. H. Kramer, G. Transtromer, Carmen García, Pierre Billoir, H. Foeth, B. Ueberschaer, A. De Angelis, P. Collins, Maurizio Canepa, Daniel Bloch, Ahmimed Ouraou, M. Chapkin, Vaclav Vrba, C. Defoix, Hans Dijkstra, F. Fulda-Quenzer, C. Gaspar, E. Graziani, J. M. Brunet, A. B. Fenyuk, G. C. Zucchelli, V. Lepeltier, Paolo Checchia, Ph. Gavillet, M. Kaiser, J. MacNaughton, Claire Bourdarios, P. Paganini, and M. Nieuwenhuizen
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Decay length, Large Electron–Positron Collider, D meson, High Energy Physics::Experiment, B meson, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Lepton, Bar (unit)
Abstract: A measurement of B meson lifetimes is presented using data collected from 1991 to 1993 by the DELPHI detector at the LEP collider. Samples of events with a D meson and a lepton in the same jet are selected where$\bar D^{^0 } \ell ^ + $ and D*l+ events originate mainly from the semileptonic decays of B+ and B0 mesons, respectively. From the reconstructed B decay length and the estimated B momentum, taking into account the dilution due to B decays into$\bar D^{^{**} } \ell ^ + v$, the following B meson lifetimes and lifetime ratio are measured: $$\begin{gathered} \tau (B^ + ) = 1.61_{ - 0.16}^{ + 0.16} (stat.) \pm 0.12(syst.) ps \hfill \\ \tau (B^0 ) = 1.61_{ - 0.13}^{ + 0.14} (stat.) \pm 0.08(syst.) ps \hfill \\ \tau (B^ + )/\tau (B^0 ) = 1.00_{ - 0.15}^{ + 0.17} (stat.) \pm 0.10(syst.) \hfill \\ \end{gathered} $$ and an average lifetime of B+ and B0 mesons is obtained: $$\tau (B) = 1.61_{ - 0.07}^{ + 0.08} (stat.) \pm 0.05(syst.) ps$$
Published: 1995

19. Production of charged particles, KS0, K±, p and Λ in events and in the decay of b hadrons

Author: Patrick Jarry, J. Chauveau, A. Petrolini, G. Rinaudo, B. De Lotto, G. Crosetti, Evgueni Vlasov, J. Salt, J. A. Hernando, Luis Peralta, F. Kapusta, H. Herr, L. G. Tkatchev, A. Pullia, A. Seitz, V. Ronjin, Marek Szczekowski, G. Valenti, F. Pierre, F. Simonetto, Maria Elena Pol, S. Katsanevas, M. Battaglia, A. N. Sisakian, A. Sadovsky, Denis Gelé, J. T.M. Chrin, M. Michelotto, B. Muryn, P. Herquet, R. Contri, I. A. Tyapkin, C. Kreuter, J. P. Tavernet, D. Vilanova, E. I. Rosenberg, K. Kurvinen, E. Rosso, H. Klein, Borge Svane Nielsen, J. J. Lozano, S. De Brabandere, Vincent Hedberg, D. W. Lane, D. Y. Bardin, M. Karlsson, T. A. Filippas, W. Neumann, Y. Dufour, J-C. Marin, R. Gokieli, P. Gunnarsson, A. Firestone, Tiziano Rovelli, D. Wicke, Javier Sánchez, Ivan Mikulec, K. Osterberg, Krzysztof Doroba, Chiara Meroni, G. Ekspong, M. Regler, Sandor Czellar, G. Polok, A. Passeri, I. V. Ajinenko, Spyros Tzamarias, O. Tchikilev, M. J. Bates, A. Buys, P. N. Ratoff, Peter Kluit, S. Simonetti, R. Ehret, Josef Strauss, Manolis Dris, P. Roudeau, A. Lopez-Fernandez, T. Tabarelli, V. Chabaud, M. Espirito Santo, W. Venus, V. Cassio, G. Leder, B. Åsman, Toralf Bernhard Skaali, R. Nicolaidou, I. Kronkvist, Ernesto Migliore, D. Gamba, M. Davenport, Fernand Grard, V. Lefebure, M. Begalli, D. Crennell, G. Smadja, F. Mandl, A. Baroncelli, P. Van Dam, M. Pimenta, Alberto Benvenuti, Yu. Sedykh, J. Van Eldik, P. Jalocha, B. A. Khomenko, F. Verbeure, J. P. Gerber, Francesco Navarria, T. S. Hill, Tord Ekelof, M. Zito, H. Staeck, Marc Winter, G. Vegni, P. Rebecchi, O. Podobrin, A. Daum, C. De La Vaissiere, M. Bonesini, P. Kubinec, Clara Troncon, G. E. Theodosiou, P. Langefeld, Phillip Allport, G. Della Ricca, G. W. Van Apeldoorn, H. Mueller, H. Wahlen, B. Stugu, T. Maron, M. Gandelman, P. Carrilho, J. J. Hernandez, M. L. Andrieux, A. Trombini, F. Zach, Wojciech Kucewicz, C. Gaspar, J. P. Engel, L. Gorn, S. Lamblot, Stefano Ragazzi, B. Loerstad, S. C. Blyth, G. Wilkinson, H. Rahmani, G. Wormser, D. Fassouliotis, Ariella Cattai, S. O. Holmgren, L. S. Vertogradov, Juan Fuster, J. H. Koehne, Kathy Huet, Valeriy Pozdniakov, Themistocles Bowcock, A. Tilquin, Barry King, Luc Pape, Anna Lipniacka, Winfried Mitaroff, E. Spiriti, C. Defoix, F. Fulda-Quenzer, M.D.M. De Fez Laso, M. S. Bilenky, A. Klovning, L.J. Carroll, U. Mjoernmark, C. Bosio, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, F. Ledroit, Jacques Lemonne, M. V. Castillo Gimenez, Stanislav Nemecek, M. Berggren, P. Delpierre, T. Bolognese, Klaus Hamacher, D. J. Holthuizen, J. Dolbeau, Louis Lyons, Chiara Mariotti, J. Dahm, J. Timmermans, M. Prest, Allan Hallgren, H. T. Phillips, Vladimir Cindro, Cristian Stanescu, P. Branchini, W. Oberschulte-Beckmann, Y. Arnoud, R. C. Shellard, Josef Hrubec, A. M. Segar, L. Ventura, K. Yip, R. Lindner, Y. Lemoigne, J. Bjarne, M. Weierstall, G. C. Zucchelli, W. Bonivento, Kerem Cankocak, H. Schneider, G. Myatt, P. Bruckman, O. Yushchenko, P. Bambade, J. Medbo, P.S.L. Booth, Fabio Cossutti, Christine Kourkoumelis, R. Sekulin, P. Weilhammer, E. Dahl-Jensen, E. Graziani, J. M. Brunet, B. Tome, P. Antilogus, H. Foeth, F. Dupont, I. Stavitski, O. Ullaland, Leif J. Jönsson, G. A. Chelkov, U. Haedinger, R. A. Brenner, Milos Lokajicek, F. Fontanelli, R. Aleksan, C. Lambropoulos, Ugo Amaldi, F. Formenti, F. Cao, S. Hahn, Francesca Romana Cavallo, T. Lesiak, Marcos Dracos, Pierre Juillot, B. Koene, W. De Boer, E. Zevgolatakos, Paul Baillon, D. Zontar, Alexander Lincoln Read, Paul Dauncey, N. Demaria, G. Damgaard, K. D. Brand, J. Pennanen, N. I. Zimin, T. Moa, M. Szeptycka, F. Hahn, L. Di Ciaccio, B. Ueberschaer, Jan Krolikowski, V. Nikolaenko, A. Chan, W.S.C. Williams, Z. Krumstein, S. J. Alvsvaag, E. Agasi, N. Neumeister, Robert S. Brown, Y. Sacquin, Demetrios Loukas, G. Sciolla, G. Maehlum, R. Lauhakangas, Ph. Charpentier, Th D. Papadopoulou, N. N. Khovanski, W. Bartl, V. Lepeltier, I. Lippi, J. A. Valls Ferrer, M. Verlato, P. B. Renton, L. Bugge, T. L. Hessing, J. P. Laugier, A. De Min, Andrei Nomerotski, I. Siccama, G. Sajot, J. H. Wickens, P. Pages, Gary John Barker, Marco Paganoni, Jose Luis Contreras, V. Gracco, A. De Angelis, D. C. Fries, P. Collins, Maurizio Canepa, Paolo Morettini, J. G. Loken, M. Feindt, S. Sánchez Navas, V. Chorowicz, Pavlos Ioannou, Lydia Roos, A. J. Camacho Rozas, C. Martinez-Rivero, J. Drees, V. V. Lapin, D. Z. Toet, P. Siegrist, William Trischuk, A. Markou, F. Stichelbaut, J. J. Gomez Y Cadenas, W. Krupinski, B. Marechal, L. Tortora, R. Mc Kay, F. J. Harris, S. Ueberschaer, P. Negri, Paolo Checchia, C. De Saint-Jean, P. Beilliere, M. Donszelmann, A. Andreazza, Danilo Zavrtanik, Daniel Bloch, Paolo Ronchese, N. Ershaidat, Ph. Gavillet, C. De Clercq, M. Kaiser, W. J. Murray, Marta Calvi, Wolfgang Adam, K. Woschnagg, H. J. Hilke, A. Ferrer, B. Franek, N. J. Kjaer, Geoffrey Smith, Evangelos Gazis, L. Vitale, A. Tomaradze, O. Smirnova, D. Radojicic, E. C. Katsoufis, G. Gopal, L. De Paula, Ahmimed Ouraou, L. Yu, P. Niss, I. Ripp, R. Janik, Mogens Dam, A. Maltezos, R. Keranen, Carlos Lacasta, J. Garcia, W. Hao, O. Barring, Klaus Moenig, Fabrizio Parodi, Francisco Matorras, H. Pernegger, Manfred Krammer, Paolo Privitera, D. Souza-Santos, P. Lutz, M. A. Houlden, M. Mazzucato, Matteo Pegoraro, O. Kouznetsov, C. Bricman, Andrea Perrotta, P. Sponholz, Göran Jarlskog, M. A. Lopez Aguera, B. Bouquet, L. Chaussard, B. Golob, A. G. Frodesen, E. K. Johansson, V. Obraztsov, I. Roncagliolo, Claire Bourdarios, W. Da Silva, T. Buran, Markus Elsing, B. Jean-Marie, V. Bocci, R. Orava, Steinar Stapnes, R. Mc Nulty, Martino Margoni, Z. Hajduk, W. K. Van Doninck, F. Richard, E. Fokitis, P. Chochula, C. Matteuzzi, P. Abreu, B. D'Almagne, Yu. Belokopytov, G. Tristram, R. Henriques, H. De Boeck, M. Tyndel, R. Zuberi, Maciej Górski, R. Moeller, R. Sosnowski, M. Hahn, W. D. Apel, S. Almehed, Olga Botner, Krzysztof Korcyl, P. H. Kramer, A. Hakansson, K. Kulka, P. Vincent, G. Transtromer, J. Maillard, L. K. Resvanis, F. Naraghi, V. Malychev, Carmen García, G. Grosdidier, Juan Abel Barrio, Pierre Billoir, Massimo Caccia, Mariusz Witek, R. Barate, P. V. Chliapnikov, B. Boštjančič, V. Perevozchikov, J. E. Augustin, Sandra Amato, F. Carena, F. Djama, Imad Baptiste Laktineh, S. Squarcia, M. Voutilainen, S. Haider, G. E. Kalmus, S. Marti i Garcia, D. Edsall, H. Saarikko, J. L. Fousset, Alessandra Romero, C. Caso, M. Chapkin, Tiziano Camporesi, A. Ruiz, M. A E Schyns, G. Cosme, Ugo Gasparini, H. Palka, Rupert Leitner, G. Piana, P. F. Honore, G. Matthiae, Vaclav Vrba, Hans Dijkstra, Piotr Zalewski, P. J. Holt, H. B. Crawley, N. G. Redaelli, L. Brillault, J. W. Lamsa, Marco Bozzo, M. Pernicka, Jesus Marco, G. Lenzen, R. Strub, F. Martinez-Vidal, V. Kostioukhine, M. Koratzinos, K. A. Drees, V.A. Uvarov, M. Blume, F. Barao, Dietrich Liko, P. Frenkiel, A. G. Olshevski, K. Stepaniak, D. Gillespie, Chariclia Petridou, T. Spassov, A. Maio, Branislav Sitar, M. Reale, Daniel Treille, M. Bigi, J. Ridky, J. N. Jackson, Pascal Paganini, F. Waldner, Nikita Smirnov, J. Rames, F. M. L. Almeida, J. Baudot, P. Kokkinias, C. Walck, C. K. Legan, E. Higon, S. Bosworth, H. Furstenau, A. Stocchi, J. Guy, Maria Roberta Monge, F. Scuri, A. Normand, Tim Adye, A. M. Wetherell, L. Lanceri, G. D. Alekseev, E. Torassa, A. Zalewska, W. T. Meyer, Stéphane Plaszczynski, Laurent Mirabito, Mario Sannino, M. Mc Cubbin, K. Hultqvist, Georgios Stavropoulos, D. Bertrand, E. Cortina, W. Ruckstuhl, P. Beltran, G. Borisov, M. Baubillier, V. Canale, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, E. Karvelas, J. Cuevas Maestro, T. Todorov, M. Wielers, M. L. Turluer, D. Reid, Gianni Zumerle, P. Poropat, Andromachi Tsirou, Andre Augustinus, A. Wehr, Lucio Cerrito, J.D. Richardson, Richard Jacobsson, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Multiplicity (mathematics), Lambda, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, 010306 general physics, Beam energy
Abstract: A sample of events enriched in bb̄ quark pairs was selected in the data recorded by the DELPHI experiment at LEP during 1992 and 1993, by the presence of secondary decay vertices from short-lived particles. Using this sample, the average multiplicities of Ks0, K±, p(p̄), Λ(View the MathML source) and of charged particles in bb̄ events have been measured, distinguishing the component from fragmentation and the component coming from the decay of b-hadrons. The measurement of the average charge multiplicity in bb̄ events was used to compute the mean fractional beam energy carried by the primary b-hadron, and the difference in charged particle multiplicity between bb̄ events and light quark (uū, dd̄, ss̄) events.
Published: 1995

20. Observation of orbitally excited B mesons

Author: G. Smadja, J. Van Eldik, P. Jalocha, T. S. Hill, A. Daum, A. Markou, P. B. Renton, D. C. Fries, E. C. Katsoufis, Marta Calvi, Geoffrey Smith, A. Firestone, G. W. Van Apeldoorn, L. Ventura, K. Yip, R. Lindner, Y. Lemoigne, G. Matthiae, G. Kalmus, Tord Ekelof, H. Staeck, L. Jonsson, M. Weierstall, Stefano Ragazzi, G.P. Gopal, T. Tabarelli, E. Dahl-Jensen, F. Carena, P. Bruckman, A. B. Fenyuk, G. C. Zucchelli, O. Yushchenko, I. Lippi, R. Sekulin, A. Buys, B. Loerstad, D. Gillespie, Chiara Mariotti, J. Sanchez, Ph. Charpentier, P. Rebecchi, M. Krammer, P. Poropat, M. Bonesini, Goeran Jarlskog, V. Lepeltier, A. S. Vodopyanov, F. Formenti, F. Cao, H. Rahmani, D. Fassouliotis, F. Ledroit, Jacques Lemonne, P. Pages, Kathy Huet, J. Garcia, S. Hahn, Francesca Romana Cavallo, T. Bolognese, J. H. Wickens, Jose Luis Contreras, Alessandro Petrolini, J. J. Hernandez, Alexander Zaitsev, N. Ershaidat, Gary John Barker, A. Tomaradze, E. K. Johansson, R. Moeller, K. Woschnagg, B. Muryn, H. J. Hilke, Robert S. Brown, O. Ullaland, Andrei Nomerotski, Mario Sannino, M. Gandelman, M. A. Lopez Aguera, A. Normand, Paolo Checchia, G. Vegni, G. Maehlum, W. Oberschulte-Beckmann, Branislav Sitar, B. De Lotto, Ph. Gavillet, T. Moa, M. Verlato, G. Wormser, J. E. Augustin, W. Bonivento, L. Vitale, Kerem Cankocak, V. Vrba, M. Kaiser, P. Herquet, R. Contri, O. Podobrin, V. Obraztsov, M. Reale, O. Kouznetsov, Daniel Treille, M. Bigi, L. S. Vertogradov, K. Doroba, N. Neumeister, V. V. Lapin, C. De Clercq, J. A. Valls Ferrer, D. Radojicic, W. Trischuk, W. J. Murray, Stéphane Plaszczynski, P. Roudeau, L. K. Resvanis, Martino Margoni, E. Fokitis, E. I. Rosenberg, L. De Paula, A. G. Olshevski, B. Bouquet, W. Krupinski, I. Roncagliolo, B. Franek, V. Pozdniakov, Jan Ridky, Josef Strauss, M. Houlden, Manolis Dris, M. J. Bates, C. Gaspar, V. Chabaud, M. Espirito Santo, R. C. Shellard, Josef Hrubec, P. Paganini, M. Prest, G. Zumerle, J. Dolbeau, Flavio Fontanelli, Lydia Roos, W. Venus, P. Abreu, J. G. Loken, K. Stepaniak, C. Martinez-Rivero, A. M. Segar, P. Bambade, P.S.L. Booth, D. Gele, S-O. Holmgren, Allan Hallgren, Giovanni Valenti, L. Mirabito, Mikko Voutilainen, V. Cassio, J. P. Gerber, Massimo Caccia, R. Nicolaidou, H. Pernegger, P. Lutz, J. L. Fousset, Tiziano Camporesi, Evangelos Gazis, G. Cosme, U. Haedinger, A. Maio, R. Lauhakangas, C. Caso, B. Marechal, Piotr Zalewski, D. Zontar, C. Bourdarios, Ariella Cattai, U. Gasparini, Juan Abel Barrio, H. Furstenau, R. Orava, Borge Svane Nielsen, P. N. Ratoff, G. Leder, D. Gamba, H. Palka, J. J. Lozano, Patrick Jarry, I. Kronkvist, P. J. Holt, N. G. Redaelli, G. Rinaudo, Bjarne Stugu, Chiara Meroni, Tiziano Rovelli, K. A. Drees, J.A. Tyapkin, S. De Brabandere, J. W. Lamsa, M. L. Andrieux, A. N. Sisakian, Marco Bozzo, M. Dracos, L. Chaussard, V.A. Uvarov, A. M. Wetherell, F. M. L. Almeida, Guido Barbiellini, A. Trombini, M. Blume, F. Barao, R. A. Brenner, V. Malychev, A. Sadovsky, J. Guy, Sandra Amato, P. Frenkiel, P. Ioannou, Klaus Hamacher, F. Zach, M. Donszelmann, S. Sánchez Navas, L. G. Tkatchev, C. Walck, Tim Adye, Gueorgui Chelkov, Imad Baptiste Laktineh, A. Zalewska, S. Squarcia, P. Juillot, J. A. Hernando, E. Higon, S. Haider, G. D. Alekseev, S. J. Alvsvaag, E. Agasi, N.I. Zimin, J. Baudot, P. Negri, S. Bosworth, J. Chauveau, Maria Elena Pol, S. Katsanevas, D. Vilanova, H. Saarikko, W. T. Meyer, Stanislav Nemecek, F. Scuri, A. Lopez-Fernandez, V. Hedberg, J. T.M. Chrin, J-C. Marin, R. Gokieli, M. Berggren, A. Tsirou, J. Rames, F. Djama, A. Augustinus, I. V. Ajinenko, M. Mc Cubbin, K. Hultqvist, T. A. Filippas, Phillip Allport, J. Dahm, H. B. Crawley, A. Klovning, Y. Arnoud, U. Mjoernmark, C. Bosio, G. Della Ricca, D. Y. Bardin, T. B. Skaali, P. Kubinec, Tuure Tuuva, G. E. Theodosiou, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, Th. D. Papadopoulou, J. N. Jackson, P. Kluit, C. Vander Velde, C. Kreuter, Mogens Dam, L.J. Carroll, L. Lanceri, C. K. Legan, M. Karlsson, Alexander Lincoln Read, Luc Pape, R. Ehret, S. C. Blyth, L. Brillault, V. Nikolaenko, H. T. Phillips, Vladimir Cindro, W. D. Apel, Lucio Cerrito, J.D. Richardson, Juan Fuster, Luis Peralta, F. Kapusta, Richard Jacobsson, C. Lambropoulos, Ugo Amaldi, W. De Boer, Z. Krumstein, Yu. Sedykh, José Salt, P. H. Kramer, B. Åsman, E. Zevgolatakos, J. Medbo, M.D.M. De Fez Laso, R. Mc Nulty, H. De Boeck, B. Jean-Marie, A. De Min, T. Buran, Paolo Ronchese, S. Stapnes, Cristian Stanescu, P. Branchini, H. Mueller, P. Billoir, G. Crosetti, W. Mitaroff, M. Paganoni, G. Sciolla, M. Tyndel, I. Siccama, F. Dupont, H. Schneider, Fabio Cossutti, N. J. Kjaer, J. P. Engel, K. Kurvinen, D. Wicke, K. D. Brand, J. Pennanen, M. Pegoraro, J. Maillard, J. J. Gomez Y Cadenas, M. V. Castillo Gimenez, R. Pain, G. Lenzen, V. Bocci, Ivan Mikulec, S. Ueberschaer, L. Di Ciaccio, H. Herr, A. Seitz, Jan Krolikowski, V. Canale, T. Lesiak, A. J. Camacho Rozas, Antonio Ferrer, D. Z. Toet, B. Boštjančič, V. Perevozchikov, N. N. Khovanski, W. Bartl, G. Tristram, Hans Dijkstra, P. Privitera, O. Smirnova, K. Osterberg, P. Siegrist, N. Demaria, Marek Szczekowski, R. Barate, A. Maltezos, G. Damgaard, V. Ronjin, F. Simonetto, I. Ripp, R. Janik, J. P. Laugier, E. Rosso, M. Pernicka, M. Feindt, Guy Wilkinson, F. Verbeure, Jesus Marco, R. Strub, Fernand Grard, I. Stavitski, V. Lefebure, Paul Baillon, B. A. Khomenko, F. Martinez-Vidal, V. Kostioukhine, M. Koratzinos, C. Bricman, J. Drees, D. Crennell, A. Stocchi, Francesco Navarria, C. Defoix, M. Szeptycka, F. Mandl, M. Michelotto, M. Zito, P. Langefeld, M. Battaglia, T. Maron, M. R. Monge, W. Neumann, L. Gorn, P. Carrilho, F. Parodi, Y. Dufour, E. Vlasov, P. D. Dauncey, Sandor Czellar, P. Delpierre, G. Polok, F. Pierre, M. Pimenta, D. W. Lane, S. Marti i Garcia, D. Edsall, G. Myatt, G. Ekspong, G. Grosdidier, Ernesto Migliore, Alessandra Romero, A. Ruiz, M. A E Schyns, S. Simonetti, M. Begalli, C. Kourkoumelis, P. F. Honore, A. Baroncelli, V. Gracco, P. Van Dam, M. S. Bilenky, H. Klein, B. Dalmagne, C. De La Vaissiere, P. Kokkinias, Klaus Moenig, Milos Lokajicek, Louis Lyons, Themistocles Bowcock, A. Tilquin, L. Tortora, F. J. Harris, R. Aleksan, Carlos Lacasta, Barry King, E. Spiriti, R. Frühwirth, J. Timmermans, R. Sosnowski, A. C. Benvenuti, Demetrios Loukas, K. Kulka, P. Vincent, F. Naraghi, A. Perrotta, A. Lipniacka, A. Andreazza, L. Bugge, G. Borisov, W. Da Silva, B. Koene, M. Baubillier, F. Stichelbaut, A. Pullia, R. Mc Kay, W. K. Van Doninck, Paolo Morettini, C. De Saint-Jean, P. Beilliere, F. Richard, P. Chochula, M. Regler, D. Zavrtanik, C. Petridou, C. Matteuzzi, M. Hahn, R. Keranen, Francisco Matorras, S. Almehed, L. Yu, W. Hao, O. Barring, F. Bianchi, D. Souza-Santos, G. Sajot, Marc Winter, C. Troncon, J. H. Koehne, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, A. G. Frodesen, J. Bjarne, B. Tome, H. Briand, P. Antilogus, Z. Hajduk, F. Hahn, Maciej Górski, E. Karvelas, M. Davenport, A. Hakansson, P. V. Chliapnikov, A. Chan, W.S.C. Williams, G. Stavropoulos, V. Chorowicz, J. Cuevas Maestro, P. Niss, M. Mazzucato, T. Todorov, M. Wielers, M. L. Turluer, D. Reid, D. J. Holthuizen, Y. Sacquin, T. L. Hessing, Wolfgang Adam, A. Wehr, D. Bertrand, E. Cortina, Yu. Belokopytov, R. Henriques, Mariusz Witek, W. Ruckstuhl, Rupert Leitner, G. Piana, W. Kucewicz, H. Wahlen, P. Beltran, B. Golob, T. Spassov, Markus Elsing, K. Rybicki, R. Zuberi, Olga Botner, G. Transtromer, Carmen García, H. Foeth, B. Ueberschaer, N. Smirnov, A. De Angelis, P. Collins, Maurizio Canepa, Daniel Bloch, Ahmimed Ouraou, P. Weilhammer, F. Fulda-Quenzer, E. Graziani, J. M. Brunet, A. Passeri, Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, G, Allport, P, Almehed, S, Almeida, F, Alvsvaag, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, M, Antilogus, P, Apel, W, Arnoud, Y, Åsman, B, Augustin, J, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbiellini, G, Bardin, D, Barker, G, Baroncelli, A, Barring, O, Barrio, J, Bartl, W, Bates, M, Battaglia, M, Baubillier, M, Baudot, J, Becks, K, Begalli, M, Beilliere, P, Belokopytov, Y, Beltran, P, Benvenuti, A, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, M, Billoir, P, Bjarne, J, Bloch, D, Blume, M, Blyth, S, Bocci, V, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P, Borisov, G, Bosio, C, Bostjancic, B, Bosworth, S, Botner, O, Bouquet, B, Bourdarios, C, Bowcock, T, Bozzo, M, Branchini, P, Brand, K, Brenner, R, Briand, H, Bricman, C, Brillault, L, Brown, R, Bruckman, P, Brunet, J, Bugge, L, Buran, T, Buys, A, Caccia, M, Calvi, M, Camacho Rozas, A, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carrilho, P, Carroll, L, Caso, C, Cassio, V, Castillo Gimenez, M, Cattai, A, Cavallo, F, Cerrito, L, Chabaud, V, Chan, A, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G, Chliapnikov, P, Chochula, P, Chorowicz, V, Chrin, J, Cindro, V, Collins, P, Contreras, J, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, H, Crennell, D, Crosetti, G, Cuevas Maestro, J, Czellar, S, Dahl-Jensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Daum, A, Dauncey, P, Davenport, M, Da Silva, W, Defoix, C, Della Ricca, G, Delpierre, P, Demaria, N, De Angelis, A, De Boeck, H, De Boer, W, De Brabandere, S, De Clercq, C, De Fez Laso, M, De La Vaissiere, C, De Lotto, B, De Min, A, De Paula, L, De Saint-Jean, C, Dijkstra, H, Di Ciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, K, Dris, M, Dufour, Y, Dupont, F, Edsall, D, Ehret, R, Ekelof, T, Ekspong, G, Elsing, M, Engel, J, Ershaidat, N, Espirito Santo, M, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Filippas, T, Firestone, A, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Fousset, J, Franek, B, Frenkiel, P, Fries, D, Frodesen, A, Fruhwirth, R, Fulda-Quenzer, F, Furstenau, H, Fuster, J, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, E, Gele, D, Gerber, J, Gillespie, D, Gokieli, R, Golob, B, Gomez Y Cadenas, J, Gopal, G, Gorn, L, Gorski, M, Gracco, V, Grard, F, Graziani, E, Grosdidier, G, Gunnarsson, P, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Hahn, S, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, Hao, W, Harris, F, Hedberg, V, Henriques, R, Hernandez, J, Hernando, J, Herquet, P, Herr, H, Hessing, T, Higon, E, Hilke, H, Hill, T, Holmgren, S, Holt, P, Holthuizen, D, Honore, P, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Ioannou, P, Jackson, J, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E, Jonsson, L, Juillot, P, Kaiser, M, Kalmus, G, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, E, Keranen, R, Khomenko, B, Khovanski, N, King, B, Kjaer, N, Klein, H, Klovning, A, Kluit, P, Koehne, J, Koene, B, Kokkinias, P, Koratzinos, M, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, P, Krammer, M, Kreuter, C, Krolikowski, J, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kulka, K, Kurvinen, K, Lacasta, C, Laktineh, I, Lambropoulos, C, Lamsa, J, Lanceri, L, Lane, D, Langefeld, P, Lapin, V, Last, I, Laugier, J, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, C, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, J, Lopez-Fernandez, A, Lopez Aguera, M, Loukas, D, Lozano, J, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maio, A, Maltezos, A, Malychev, V, Mandl, F, Marco, J, Marechal, B, Margoni, M, Marin, J, Mariotti, C, Markou, A, Maron, T, Martinez-Rivero, C, Martinez-Vidal, F, Marti i Garcia, S, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mc Cubbin, M, Mc Kay, R, Mc Nulty, R, Medbo, J, Meroni, C, Meyer, W, Michelotto, M, Migliore, E, Mikulec, I, Mirabito, L, Mitaroff, W, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, M, Morettini, P, Mueller, H, Murray, W, Muryn, B, Myatt, G, Naraghi, F, Navarria, F, Navas, S, Negri, P, Nemecek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, B, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Oberschulte-Beckmann, W, Obraztsov, V, Olshevski, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Pain, R, Palka, H, Papadopoulou, T, Pape, L, Parodi, F, Passeri, A, Pegoraro, M, Pennanen, J, Peralta, L, Perevozchikov, V, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, H, Piana, G, Pierre, F, Pimenta, M, Plaszczynski, S, Podobrin, O, Pol, M, Polok, G, Poropat, P, Pozdniakov, V, Prest, M, Privitera, P, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P, Read, A, Reale, M, Rebecchi, P, Redaelli, N, Regler, M, Reid, D, Renton, P, Resvanis, L, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronjin, V, Roos, L, Rosenberg, E, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann-Kleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schneider, H, Schyns, M, Sciolla, G, Scuri, F, Sedykh, Y, Segar, A, Seitz, A, Sekulin, R, Shellard, R, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, A, Sitar, B, Skaali, T, Smadja, G, Smirnov, N, Smirnova, O, Smith, G, Sosnowski, R, Souza-Santos, D, Spassov, T, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stapnes, S, Stavitski, I, Stavropoulos, G, Stepaniak, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tchikilev, O, Theodosiou, G, Tilquin, A, Timmermans, J, Tkatchev, L, Todorov, T, Toet, D, Tomaradze, A, Tome, B, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, M, Tuuva, T, Tyapkin, J, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Valls Ferrer, J, Vander Velde, C, Van Apeldoorn, G, Van Dam, P, Van Doninck, W, Van Eldik, J, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, L, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, A, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Wehr, A, Weierstall, M, Weilhammer, P, Wetherell, A, Wicke, D, Wickens, J, Wielers, M, Wilkinson, G, Williams, W, Winter, M, Witek, M, Wormser, G, Woschnagg, K, Yip, K, Yu, L, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, N, Zito, M, Zontar, D, Zuberi, R, Zucchelli, G, Zumerle, G, UCL - SST/IRMP - Institut de recherche en mathématique et physique, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Delphi (IHEF, IoP, FNWI), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, E+E ANNIHILATION, LUND MONTE-CARLO, Electron–positron annihilation, DELPHI, B meson, fragmentation, b-jet, 01 natural sciences, Resonance (particle physics), Full width, Partícules (Física nuclear), JET FRAGMENTATION, DECAYS, Nuclear physics, PHYSICS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Nuclear Experiment, Detectors de radiació, Physics, 010308 nuclear & particles physics, Quark model, LARGE ELECTRON POSITRON COLLIDER, Excited state, PARTICLE PHYSICS, High Energy Physics::Experiment, Particle Physics - Experiment, Production rate
Abstract: Experimental evidence for the existence of orbitally excited B meson states is presented in an analysis of the BÏ and B*Ï distribution of Q = m(B**) - m(B(*)) - m(Ï) using Z0decay data taken with the DELPHI detector at LEP. The mean Q-value of the decays B**â B(*)Ï is measured to be 284 Â± 5 (stat.) Â± 15 (syst.) MeV/c2, and the Gaussian width of the signal is 79 Â± 5 (stat.) Â± 8 (syst.) MeV/c2. This signal can be described as a single resonance of mass m = 5732 Â± 5 (stat.) Â± 20 (syst.) MeV/c2and full width Î = 145 Â± 28 MeV/c2. The observed shape is also consistent with the production of several broad and narrow states as predicted by the quark model and partly observed in the D-meson sector. The production rate of B**per b-jet is found to be 0.27 Â± 0.02 (stat.) Â± 0.06 (syst.). Â© 1995.
Published: 1995

21. Study of hard scattering processes in multihadron production from ?? collisions at LEP

Author: P. Carrilho, J. J. Hernandez, A. Klovning, Y. Arnoud, U. Mjoernmark, C. Bosio, P. Delpierre, E. Daubie, D. Vilanova, J. Blocki, J-C. Marin, M. Bonesini, Vladimir Cindro, F. Dupont, Andrey Korytov, G. Myatt, B. Koene, G. E. Theodosiou, S. C. Blyth, G. Wilkinson, M.D.M. De Fez Laso, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, G. Borisov, Kathy Huet, Valeriy Pozdniakov, M. Baubillier, Achille Stocchi, T. Bolognese, Luis Peralta, F. Kapusta, A. Pullia, Jan Krolikowski, N. N. Khovanski, W. Bartl, A. N. Sisakian, T. Hofmokl, K. A. J. Forbes, S. D. Hodgson, B. Golob, T. Buran, Markus Elsing, D. Zontar, W. Bonivento, J. A. Valls Ferrer, J. P. Laugier, D. J. Holthuizen, Y. Sacquin, Paolo Morettini, J. G. Loken, P. Beilliere, A. Firestone, A. Buys, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, M. Vollmer, E. Rosso, H. Klein, Paolo Giacomelli, K. Osterberg, M. Los, M. Zito, M. Prest, Kerem Cankocak, Allan Hallgren, U. Haedinger, Manfred Krammer, R. Zuberi, J. T.M. Chrin, M. Michelotto, Olga Botner, Krzysztof Korcyl, V.A. Uvarov, R. Lauhakangas, Ph. Charpentier, M. Sessa, George Kalkanis, P. B. Renton, D. C. Fries, W. Hao, O. Barring, M. Pimenta, B. A. Khomenko, Francesco Navarria, P. Langefeld, T. Maron, L. Gorn, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, C. Kreuter, E. Karvelas, Wolfgang Adam, J. Cuevas Maestro, M. Donszelmann, Danilo Zavrtanik, R. Gokieli, A. Lopez-Fernandez, Tuure Tuuva, Clara Troncon, C. De Clerq, Ugo Gasparini, M. J. Bates, T. Spassov, D. Gamba, Carmen García, H. Foeth, R. J. Apsimon, T. L. Hessing, B. Ueberschaer, M. McCubbin, J. N. Jackson, A. De Min, I. Siccama, G. Sajot, P. Kokkinias, J. J. Gomez Y Cadenas, R. Pain, C. Gaspar, S. Ueberschaer, Tord Ekelof, H. Staeck, B. Loerstad, G. Valenti, Andrea Perrotta, A. Elliot Peisert, S. O. Holmgren, L. S. Vertogradov, R. Cases, P. Abreu, J. Chauveau, I. A. Tyapkin, J. Dolbeau, Yu. Belokopytov, Phillip Allport, Guido Barbiellini, F. Carena, M. Szczekowski, V. Obraztsov, Tiziano Rovelli, A. Baroncelli, P. Van Dam, T. Todorov, M. Wielers, B. Marechal, E. C. Katsoufis, Marta Calvi, Vincenzo Canale, Geoffrey Smith, F. Verbeure, A. De Angelis, P. Collins, M. Jonker, A. B. Fenyuk, F. Pierre, Vincent Hedberg, P. Bambade, H. Palka, G. Skjevling, G. W. Van Apeldoorn, J. W. Lamsa, F. Barao, M. L. Turluer, D. Reid, L. O. Eek, R. C. Shellard, L. Di Ciaccio, A. M. Segar, E. Higon, R. Seufert, S. Bosworth, F. Scuri, A. M. Wetherell, L. Lanceri, Stéphane Plaszczynski, Juan Abel Barrio, Borge Svane Nielsen, J. J. Lozano, H. De Boeck, S. De Brabandere, B. Jean-Marie, M. Tyndel, B. Stugu, J. Guy, M. Gandelman, Paolo Ronchese, P.S.L. Booth, K. D. Brand, J. Pennanen, N. I. Zimin, E. K. Johansson, O. Smirnova, A. Maltezos, N. J. Kjaer, T. Moa, U. Hamacher, Th. D. Papadopoulou, Guenakh Mitselmakher, R. Henriques, Charles Bricman, J. Maillard, M. Pernicka, A. G. Olshevski, O.M. Kouznetsov, Norbert Neumeister, G. Ekspong, H. Furstenau, C. De La Vaissiere, Themistocles Bowcock, A. Tilquin, Jesus Marco, G. Lenzen, G. Tristram, R. Strub, L. Ventura, R. Lindner, Y. Lemoigne, I. Roncagliolo, Daniel Bloch, Gianni Zumerle, R. Barate, G. E. Kalmus, Ahmimed Ouraou, V.M. Golovatyuk, V. Lepeltier, P. S. Iversen, F. Fontanelli, Juan Fuster, Steinar Stapnes, F. Martinez-Vidal, Pawel Jalocha, Barry King, A. P. Ostankov, Giovanni Darbo, A. Budziak, P. N. Ratoff, P. Szymanski, S. Simonetti, M. Begalli, Krzysztof Doroba, Chiara Meroni, Jan Buytaert, P. Bruckman, B. Boštjančič, V. Perevozchikov, G. Cosme, V. Kostioukhine, M. Koratzinos, P. Poropat, Andromachi Tsirou, Andre Augustinus, A. Wehr, Rupert Leitner, G. Piana, R. Moeller, P. J. Holt, Paolo Checchia, G. Matthiae, Ph. Gavillet, L. K. Resvanis, N. G. Redaelli, Robert S. Brown, Massimo Caccia, E. Spiriti, R. Frühwirth, J. Timmermans, O. Podobrin, Vladimir Nikolaenko, M. Kaiser, M. Weierstall, G. Smadja, A. Lipniacka, P. N. Bogolubov, Cristian Stanescu, P. Branchini, H. Schneider, M. van der Heijden, Christine Kourkoumelis, Robin Campion, E. Dahl-Jensen, A. Passeri, Claire Bourdarios, P. Paganini, M. Battaglia, Tim Adye, W. Neumann, F. Simonetto, G. Leder, B. Åsman, Fernand Grard, D. Crennell, A. Maio, F. Mandl, J. P. Gerber, Peter Kluit, Gary John Barker, S. Squarcia, H. Saarikko, T. Tabarelli, J. Drees, D. Bertrand, Marco Bozzo, J. C. da Silva, G. Hamel de Monchenault, Josef Strauss, S. Braibant, V. Chabaud, M. Espirito Santo, W. Venus, Dietrich Liko, P. Privitera, D. Gillespie, Chariclia Petridou, P. Herquet, P. Frenkiel, J. Straver, K. Woschnagg, Stanislav Nemecek, Y. Dufour, P. Rebecchi, M. Berggren, Louis Lyons, E. Lieb, H. Rahmani, G. Gopal, L. De Paula, D. Fassouliotis, Ariella Cattai, P. Niss, F. Waldner, E. Cortina, R. McKay, N. Novak, T. Bamporesi, Matteo Pegoraro, Sandor Czellar, R. Aleksan, C. O. Higgins, J. Dahm, Patrick Jarry, W. Ruckstuhl, C. Walck, J. L. Fousset, F. Ledroit, C. Vander Velde, O. Ullaland, Leif J. Jönsson, P. H. Kramer, G. Polok, Pierre Billoir, G. Rinaudo, J. Salt, G. A. Chelkov, L. Bugge, A. J. Camacho Rozas, D. Z. Toet, Luc Pape, P. Siegrist, Evangelos Gazis, Maria Roberta Monge, A. Zalewska, W. T. Meyer, Jacques Lemonne, Laurent Mirabito, R. Contri, J. A. Hernando, P. Juillot, P. Beltran, S. Marti, Chiara Mariotti, S. Francon, Andrei Nomerotski, H. Briand, M. Reale, Daniel Treille, M. Bigi, J. Ridky, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, P. E. S. Nilsen, P. Vaz, R. A. Brenner, Stefano Ragazzi, Demetrios Loukas, F. Formenti, F. Cao, S. Hahn, G. Sciolla, R. Nicolaidou, I. Kronkvist, F. M L Almeida Junior, Manolis Dris, P. Roudeau, M. Chapkin, Francesca Romana Cavallo, S. J. Alvsvaag, E. Agasi, M. Dracos, M. A. Lopez Aguera, Vaclav Vrba, Jorge-Armando Benitez Garcia, J. Lindgren, Z.D. Thome, B. Franek, Ernesto Migliore, Hans Dijkstra, Alberto Benvenuti, J. Van Eldik, Heinz Pernegger, M. Verlato, W. Van Doninck, J. M. Levy, V. V. Lapin, G. Wormser, M. Feindt, N. Ershaidat, A. Ferrer, V. Bocci, P. Negri, A. Tomaradze, T. S. Hill, Stefan Schael, I. Lippi, E. I. Rosenberg, W. J. Murray, J.D. Richardson, Göran Jarlskog, A. Daum, Richard Jacobsson, A. Petrolini, R. Orava, A. Koch-Mehrin, Martino Margoni, K. Kurvinen, Javier Sánchez, E. Fokitis, G. D. Alekseev, E. Torassa, W. Krupinski, W. D. Apel, Ivan Mikulec, E.N. Tsyganov, J. H. Wickens, Mogens Dam, B. Muryn, C. Martinez-Rivero, Marco Paganoni, Jose Luis Contreras, Mario Sannino, K. Hultqvist, R. McNulty, Georgios Stavropoulos, B. Bouquet, H. J. Hilke, L. Vitale, D. Radojicic, B. De Lotto, G. Crosetti, Evgueni Vlasov, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, M. Karlsson, P. Lutz, T. A. Filippas, M. Regler, R. Ehret, H. Mueller, M. S. Bilenky, H. Herr, L. G. Tkatchev, L.J. Carroll, A. Seitz, J. Medbo, P. Weilhammer, R. Sekulin, G. Maehlum, Fares Djama, William Trischuk, A. Markou, J. P. Engel, M. V. Castillo Gimenez, Paul Dauncey, N. Demaria, G. Damgaard, V. Gracco, Pavlos Ioannou, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, J. Davies, J. E. Augustin, S. Haider, H. B. Crawley, L. Brillault, W. A. Mitaroff, F. Richard, C. Matteuzzi, M. Hahn, S. Almehed, M. Voutilainen, D. Edsall, G. Grosdidier, Alessandra Romero, A. Ruiz, M. A E Schyns, P. F. Honore, B. Dalmagne, Laurent Chevalier, Milos Lokajicek, L. Tortora, F. J. Harris, Carlos Lacasta, R. Sosnowski, F. Stichelbaut, K. Kulka, P. Vincent, F. Naraghi, V. G. Timofeev, A. Andreazza, R. Keranen, Francisco Matorras, C. Defoix, F. Fulda-Quenzer, D. Souza-Santos, E. Graziani, J. M. Brunet, F. Couchot, J. Bjarne, B. Tome, P. Antilogus, F. Hahn, W. Kucewicz, Marc Winter, B. Grossetete, H. Wahlen, J. H. Koehne, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, G. Vegni, A. G. Frodesen, Z. Hajduk, M. Davenport, A. Hakansson, P. V. Chliapnikov, A. Chan, W.S.C. Williams, Lucio Cerrito, V. Chorowicz, Maciej Górski, and M. Mazzucato
Subjects: Physics, Quark, Particle physics, Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Parton, Vector meson dominance, Jet (particle physics), 01 natural sciences, Photon structure function, Gluon, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Vector meson, 010306 general physics, Engineering (miscellaneous)
Abstract: The production of multihadronic states in γγ collisions at LEP has been studied with the DELPHI detector. The analyzed data correspond to an integrated luminosity of about 32pb−1, collected in the LEP runs of 1990–1992. Minimum bias data and a sample of events with jets at highpT have been selected under the requirement that no scattered electron or positron is observed. The two data sets have been compared to Monte Carlo predictions. The non-perturbative contribution described by the vector meson dominance Model and direct$q\bar q$ production from pointlike photons described by the quark parton model were found to be insufficient to reproduce the data. It has been necessary to include a third interaction component, which is due to perburbative hard scattering of the partonic constituents of the photon. Several parametrisations of the quark and gluon densities of the photon have been tested. The interplay with the cut in jet transverse momentum, which is necessary for the separation of the perturbative and non-perturbative regions, is discussed. The data favour parametrisations with rather soft partonic content of the photon.
Published: 1994

22. Measurement of the mixing parameter in DELPHI

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, P.P. Allport, S. Almehed, F.M.L. Almeida, S.J. Alvsvaag, U. Amaldi, A. Andreazza, P. Antilogus, W.-D. Apel, R.J. Apsimon, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, P. Beilliere, P. Beltran, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, J. Bjarne, D. Bloch, J. Blocki, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, L. Brillault, R.C.A. Brown, J.-M. Brunet, L. Bugge, T. Buran, A. Buys, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, R. Campion, T. Camporesi, V. Canale, K. Cankocak, F. Cao, F. Carena, P. Carrilho, L. Carroll, R. Cases, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, Ph. Charpentier, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, J. Davies, W. Da Silva, C. Defoix, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, M.D.M. De Fez Laso, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, R. Ehret, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, N. Ershaidat, M. Espirito Santo, V. Falaleev, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, J-L. Fousset, S. Francon, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, P. Giacomelli, D. Gillespie, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, G. Gopal, L. Gorn, M. Gorski, V. Gracco, F. Grard, E. Graziani, G. Grosdidier, P. Gunnarsson, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G. Hamel De Monchenault, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, J.A. Hernando, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, P.F. Honore, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, P. Ioannou, P-S. Iversen, J.N. Jackson, R. Jacobsson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, M. Kaiser, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, W. Krupinski, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, P. Langefeld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J.M. Levy, E. Lieb, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maio, A. Maltezos, F. Mandl, J. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, S. Marti, C. Martinez-Rivero, F. Martinez-Vidal, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, C. Meroni, W.T. Meyer, M. Michelotto, E. Migliore, I. Mikulec, L. Mirabito, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, V. Nikolaenko, P.E.S. Nilsen, P. Niss, A. Nomerotski, A. Normand, M. Novak, V. Obraztsov, A.G. Olshevski, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, S. Schael, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, M. Sessa, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, A.N. Sisakian, G. Skjevling, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, I. Stavitski, G. Stavropoulos, K. Stepaniak, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, O. Tchikilev, G.E. Theodosiou, Z. Thome, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M. Turala, M-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, M. Van Der Heijden, W.K. Van Doninck, J. Van Eldik, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, G. Wormser, K. Woschnagg, K. Yip, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G. Zumerle, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Elementary particle, 01 natural sciences, b-tagging, Measure (mathematics), Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics, Mixing (physics), Lepton
Abstract: A total of about View the MathML source decays have been analyzed to measure the View the MathML source mixing probability. Two different b tagging techniques have been used: events with two leptons and events with one lepton and one Λ. From a combination of the two methods the average mixing parameter, χ, was determined to be (12.1±1.6(stat.)±0.4(syst.)±0.4(model)%.
Published: 1994

23. Measurement of the e+e− → γγ(γ) cross section at LEP energies

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, P.P. Allport, S. Almehed, F.M.L. Almeida, S.J. Alvsvaag, U. Amaldi, A. Andreazza, P. Antilogus, W-D. Apel, R.J. Apsimon, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, P. Beltran, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, J. Blocki, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, L. Brillault, R.C.A. Brown, J-M. Brunet, L. Bugge, T. Buran, A. Buys, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, R. Campion, T. Camporesi, V. Canale, K. Cankocak, F. Cao, F. Carena, P. Carrilho, L. Carroll, R. Cases, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, M. Chapkin, Ph. Charpentier, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, J. Davies, W. Da Silva, C. Defoix, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, M.D.M. De Fez Laso, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, L-O. Eek, R. Ehret, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, N. Ershaidat, M. Espirito Santo, V. Falaleev, D. Fassouliotis, M. Feindt, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, J-L. Fousset, S. Francon, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, J-P. Gerber, P. Giacomelli, D. Gillespie, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, G. Gopal, L. Gorn, M. Gorski, V. Gracco, F. Grard, E. Graziani, G. Grosdidier, B. Grossetete, P. Gunnarsson, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G.Hamel De Monchenault, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, J.A. Hernando, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, P.F. Honore, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, P. Ioannou, P-S. Iversen, J.N. Jackson, R. Jacobsson, P. Jalocha, G. Jarlskog, P. Larry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, M. Kaiser, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, A. Katargin, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, W. Krupinski, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, P. Langefeld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J.M. Levy, E. Lieb, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maio, A. Maltezos, F. Mandl, J. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, S. Marti, C. Martinez-Rivero, F. Martinez-Vidal, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, C. Meroni, W.T. Meyer, M. Michelotto, E. Migliore, I. Mikulec, L. Mirabito, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, P.E.S. Nilsen, P. Niss, A. Nomerotski, A. Normand, V. Obraztsov, A.G. Olshevski, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, A. Romero, I. Roncagliolo, P. Ronchese, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, S. Schael, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, M. Sessa, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetti, A.N. Sisakian, G. Skjevling, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, I. Stavitski, G. Stavropoulos, K. Stepaniak, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, O. Tchikilev, G.E. Theodosiou, Z. Thome, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, D. Treille, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M. Turala, M-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, M. Van Der Heijden, W.K. Van Doninck, J. Van Eldik, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, G. Wormser, K. Woschnagg, K. Yip, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G. Zumerle, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Coupling constant, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Excited state, Cutoff, Upper and lower bounds
Abstract: The total and the differential cross sections for the reaction e+e− → γγ(γ) have been measured with the DELPHI detector at LEP using an integrated luminosity of 36.9 pb−1. The results agree with the QED predictions and consequently there is no evidence for non-standard channels with the same experimental signature. The lower limits obtained on the QED cutoff parameters are Λ+ > 143 GeV and Λ− > 120 GeV, and the lower bound on the mass of an excited electron with an effective coupling constant λγ = 1 is 132 GeV/c2. Upper limits on the branching ratios for the decays Z0 → γγ, Z0 → π0γ, Z0 → ηγ and Z0 → γγγ have been determined to be 5.5 × 10−5, 5.5 × 10−5, 8.0 × 10−5, and 1.7 × 10−5 respectively. All the limits are at the 95% confidence level.
Published: 1994

24. Production of Λ and Λ correlations in the hadronic decays of the Z0

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, R. Aleksan, G.D. Alekseev, A. Algeri, P. Allen, S. Almehed, S.J. Alvsvaag, U. Amaldi, A. Andreazza, P. Antilogus, W-D. Apel, R.J. Apsimon, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, P. Beltran, D. Benedic, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, J. Blocki, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, H. Borner, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, L. Brillault, R.C.A. Brown, P. Bruckman, J-M. Brunet, A. Budziak, L. Bugge, T. Buran, H. Burmeister, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, R. Campion, T. Camporesi, V. Canale, F. Cao, F. Carena, L. Carroll, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, B. Dalmagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, J. Davies, W. Da Silva, C. Defoix, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, M.D.M. De Fez Laso, C. De La Vaissiere, B. De Lotto, A. De Min, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, L-O. Eek, P.A.-M. Eerola, R. Ehret, T. Ekelof, G. Ekspong, A. Elliot Peisert, M. Elsing, J-P. Engel, N. Ershaidat, M. Espirito Santo, V. Falaleev, D. Fassouliotis, M. Feindt, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, K.A.J. Forbes, J-L. Fousset, S. Francon, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, J-P. Gerber, P. Giacomelli, D. Gillespie, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, G. Gopal, L. Gorn, M. Gorski, V. Gracco, A. Grant, F. Grard, E. Graziani, G. Grosdidier, E. Gross, B. Grossetete, S. Gumenyuk, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G.Hamel De Monchenault, W. Hao, F.J. Harris, V. Hedberg, T. Henkes, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, I. Hietanen, C.O. Higgins, E. Higon, H.J. Hilke, S.D. Hodgson, T. Hofmokl, S-O. Holmgren, P.J. Holt, D. Holthuizen, P.F. Honore, M. Houlden, J. Hrubec, K. Huet, P.O. Hulth, K. Hultqvist, P. Ioannou, P-S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, G. Kalkanis, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, U. Kruener-Marquis, W. Kucewicz, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J.M. Levy, E. Lieb, D. Liko, J. Lindgren, R. Lindner, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maio, A. Malteros, F. Mandl, J. Marco, M. Margoni, J-C. Marin, A. Markou, T. Maron, S. Marti, C. Martinez-Rivero, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, G. Meola, C. Meroni, W.T. Meyer, M. Michelotto, I. Mikulec, L. Mirabito, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, G. Myatt, F.L. Navarria, P. Negri, S. Nemecek, R. Nicolaidou, B.S. Nielsen, B. Nijjhar, V. Nikolaenko, P.E.S. Nilsen, P. Niss, A. Nomerotski, V. Obraztsov, A.G. Olshevski, R. Orava, A. Ostankov, K. Osterberg, A. Ouraou, M. Peganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Paropat, V. Pozdniakov, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, I. Roncagliolo, P. Ronchese, C. Ronnqvist, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, S. Schael, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, M. Sessa, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, G. Skjevling, G. Smadja, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, O. Tchikilev, G.E. Theodosiou, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, O. Toker, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, D. Treille, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, M. Van Der Heijden, W.K. Van Doninck, J. Van Eldik, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, J.H. Wickens, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, M. Zanin, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G. Zumerle, J. Zuniga, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Hadronic decay, Nuclear and High Energy Physics, Particle physics, Cluster decay, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Elementary particle, 01 natural sciences, Nuclear physics, Baryon, Angular distribution, 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, 010306 general physics
Abstract: An analysis of the production of the Λ baryon in the hadronic decays of the Z0 is presented, based on about 993K multihadronic events collected by the DELPHI detector at LEP during 1991 and 1992. The differencial cross section of the Λ and the correlations between Λ and View the MathML source produced in the same event are compared to current models, based both on string fragmentation and on cluster decay. The predictions of the string fragmentation model are found to give satisfactory agreements with the data, clearly better than those of the cluster model.
Published: 1993

25. Measurement of inclusive production of light meson resonances in hadronic decays of the Z0

Author: F. Kapusta, P. Abreu, A. Pullia, Klaus Hamacher, S. O. Holmgren, L. S. Vertogradov, H. Furstenau, T.B. Skaali, S. J. Alvsvaag, E. Agasi, Juan Abel Barrio, Luca Tortora, Eugene P. Gross, E. G. Anassontzis, J. P. Engel, P. Herquet, R. Contri, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, G. Vegni, N. Brummer, T. Hofmokl, C. J. Beeston, M. V. Castillo Gimenez, A. M. Segar, J. M. Levy, M. Feindt, P. Negri, Manolis Dris, E. Rosso, H. Klein, P. Roudeau, K. Osterberg, G. Damgaard, Tiziano Rovelli, D. Isenhower, M. Los, P. S. Iversen, F. Fontanelli, P. Borgeaud, Göran Jarlskog, Alberto Benvenuti, D. Johnson, O. Pingot, Mogens Dam, S. Squarcia, E. K. Johansson, D. Bertrand, H. Muller, V. Gracco, H. Foeth, C. Bosio, G. Hamel de Monchenault, Steinar Stapnes, Josef Strauss, R. J. Apsimon, R. Holmes, H. Saarikko, M. van der Heijden, C. Ronnqvist, G. Zhang, A. P. Ostankov, S. Braibant, V. Chabaud, A. Firestone, Pavlos Ioannou, F. Couchot, W. Venus, Robin Campion, M. Pimenta, B. A. Khomenko, Dietrich Liko, N. De Groot, P. Yepes, P. Privitera, Chariclia Petridou, Patrick Jarry, G. Rinaudo, Francesco Navarria, Louis Lyons, J. Wikne, J.T. Chrin, E. Graziani, Demetrios Loukas, P. Grosse-Wiesmann, A. De Angelis, C. Vander Velde, M. Vollmer, J. Bjarne, P. Collins, D. Delikaris, P. Antilogus, J. Zúñiga, M. A. Houlden, J. Davies, W. Ruckstuhl, I. Kronkvist, Gary John Barker, U. Rossi, Paolo Giacomelli, J. Werner, Daniel Bloch, Luc Pape, D. Wormald, T. Maron, H. Briand, Daniel Treille, G. A. Chelkov, V.A. Uvarov, Th. D. Papadopoulou, Guenakh Mitselmakher, S. Rossi, Ahmimed Ouraou, V.M. Golovatyuk, K. Woschnagg, P. David, Jorge-Armando Benitez Garcia, S. Delorme, A. Petrolini, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, Maria Elena Pol, S. Katsanevas, W.S.C. Williams, G. Wormser, A. De Min, I. Siccama, G. Sajot, D. Vilanova, G. Gopal, M. Zito, W. Klempt, F. Hahn, R. Pain, R. Moller, C. Lambropoulos, Ugo Amaldi, A. N. Sisakian, P. Beltran, Paul Baillon, W. Da Silva, W. A. Mitaroff, W. De Boer, E. Zevgolatakos, Lucio Cerrito, P. E. S. Nilsen, José Salt, T. Tabarelli, E. Lieb, H. Rahmani, H. Herr, L. G. Tkatchev, y Cadenas J.J. Gomez, J. N. Jackson, V. Chorowicz, K. Monig, P. Kokkinias, M. J. Bates, Nikita Smirnov, Allan Hallgren, J-C. Marin, R. Gokieli, Spyros Tzamarias, G. Maehlum, U. Haedinger, T. A. Filippas, M. Regler, P. Branchini, P. Billoir, K. Kulka, H. Palka, G. Skjevling, T.S. Spassov, H. Schneider, R. Lauhakangas, J. W. Lamsa, K. A. J. Forbes, D. J. Holthuizen, D. Fassouliotis, Ariella Cattai, D. Gamba, F. Ledroit, S. D. Hodgson, M. Witek, H. J. Hilke, P. Niss, F. Barao, F. Carena, M. Szczekowski, R. Ehret, M. Sessa, G. Sciolla, M. Battaglia, W. Van Doninck, F. Richard, C. Matteuzzi, M. Hahn, S. Almehed, S. Marti, M. Voutilainen, G. Grosdidier, M. Crozon, Alessandra Romero, I. Lippi, Stefano Ragazzi, A. Ruiz, J. Kesteman, E. I. Rosenberg, M. A E Schyns, M. Donszelmann, D.Yu. Bardin, A. Lopez-Fernandez, G. Voulgaris, U. Kruner-Marquis, Antonio Ferrer, K. Kurvinen, E. Higon, R. Seufert, S. Bosworth, F. Scuri, Danilo Zavrtanik, F. Stichelbaut, A. Andreazza, P. H. Kramer, M. Pernicka, I. Hietanen, K. Furnival, Y. Sacquin, F. Verbeure, V. Vrba, M. Michelotto, A. M. Wetherell, M. Richardson, G. Borisov, Richard Brenner, J.H. Kohne, P. F. Honore, J. E. Augustin, Borge Svane Nielsen, A. Maltezos, T.E. Pettersen, M. Davenport, J. Lindgren, M. Baubillier, Achille Stocchi, M. Karlsson, O. Ullaland, Leif J. Jönsson, S. Francon, Javier Sánchez, B. Golob, T. Buran, B. Lorstad, Wolfgang Adam, U. Trevisan, J. J. Lozano, Krzysztof Doroba, Chiara Meroni, M. Chapkin, Jan Buytaert, A. Grant, M. Mazzucato, P. Szymanski, S. Haider, A. G. Frodesen, L. Lanceri, Stéphane Plaszczynski, Ivan Mikulec, Jesus Marco, G. Lenzen, R. Strub, F. Cao, J. Dolbeau, P. Bambade, Z. Hajduk, Eleuterio Spiriti, R. Zuberi, Olga Botner, M. Bonesini, Krzysztof Korcyl, M.S. Bilenkii, Paul Allen, R. Keranen, Philippe Charpentier, Francisco Matorras, P. Vaz, F. R. Cavallo, R. Sekulin, W. D. Apel, B. Franek, Hans Dijkstra, J. J. Hernandez, T. Moa, G. E. Theodosiou, Tuure Tuuva, Clara Troncon, P. Zalewski, Fares Djama, C. Huet, Juan Fuster, Maciej Górski, Peter Kluit, M. Fernandez Alonso, S. C. Blyth, P.S.L. Booth, N. Yamdagni, A. Klovning, C. Caso, A. Hakansson, H. Stack, A. G. Olshevski, L. Chaussard, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, Charles Bricman, V. Obraztsov, G. Valenti, William Trischuk, A. Markou, C. Gaspar, Carmen García, G. Wilkinson, Yu. Belokopytov, M.D.M. De Fez Laso, M. Jonker, F. Pierre, T. Bolognese, V. Bocci, A. Passeri, R. Sosnowski, Tord Ekelof, G. Ekspong, P. O. Hulth, Giovanni Darbo, Paolo Ronchese, P. N. Ratoff, M. Mccubbin, S. Simonetti, P. V. Chliapnikov, A. Tomaradze, N. J. Kjaer, M. Begalli, K. D. Brand, J. Pennanen, N. I. Zimin, I. Roncagliolo, F. Dupont, Andrey Korytov, O.M. Kouznetsov, H. P. Borner, V. Lepeltier, Stefan Schael, W. Kucewicz, H. B. Crawley, R. Zukanovich Funchal, Marc Winter, E. Karvelas, M. P. Clara, M. Kopf, P. Vincent, V. G. Timofeev, B. Grossetete, Maria Roberta Monge, O. Toker, A. Zalewska, W. T. Meyer, Paolo Checchia, Rupert Leitner, A. Daum, L. Bugge, P. Delpierre, E. Daubie, Martino Margoni, R. Mcnulty, E. Fokitis, A. J. Camacho Rozas, E. Cortina, D. Z. Toet, G. D. Alekseev, E. Torassa, Jan Krolikowski, N. N. Khovanski, P. Siegrist, G. Matthiae, W. Bartl, H. Wahlen, V. Kostukhin, Ariel Goobar, Ph. Gavillet, J. Cuevas Maestro, G. Myatt, S. Uberschar, L. Mathis, U. Mjornmark, G. Tristram, Paula Eerola, W. Bonivento, C. Defoix, J. A. Valls Ferrer, G. Galeazzi, F. Fulda-Quenzer, Jacques Lemonne, Alexander Lincoln Read, M. Szeptycka, B. Dalmagne, T. Todorov, H. Burmeister, J. P. Gerber, J. P. Laugier, Laurent Chevalier, W. Ershaidat, G. W. Van Apeldoorn, R. Mckay, R. Barate, Claire Bourdarios, A. Algeri, V. Ruhlmann-Kleider, C. O. Higgins, G. E. Kalmus, K. H. Becks, E. Vallazza, J. M. Brunet, Laurent Mirabito, Robert S. Brown, L. Ventura, Milos Lokajicek, Mario Sannino, M. L. Turluer, D. Reid, R. Lindner, Y. Lemoigne, K. Hultqvist, Georgios Stavropoulos, M. A. Lopez Aguera, F. J. Harris, A. Koch Mehrin, J. E. Hooper, Carlos Lacasta, Matteo Pegoraro, L. K. Resvanis, R. Orava, Fernand Grard, Gianni Zumerle, Y. Dufour, P. D. Dauncey, Sandor Czellar, M. Weierstall, G. Smadja, B. Nijjhar, P. N. Bogolubov, Bruno Schulze, B. Bouquet, O. Chikilev, Massimo Caccia, Vladimir Nikolaenko, G. Polok, Ugo Gasparini, P. Poropat, Andromachi Tsirou, Christine Kourkoumelis, J. Drees, T.L. Hessing, E. Dahl-Jensen, Guido Barbiellini, Andre Augustinus, A. Wehr, J. Guy, Natale Demaria, Evangelos Gazis, D. Benedic, Tim Adye, M. Berggren, G. Meola, P. Juillot, C. Stanescu, George Kalkanis, P. B. Renton, D. C. Fries, E. C. Katsoufis, Marta Calvi, J. Chauveau, I. A. Tyapkin, Vincenzo Canale, Geoffrey Smith, L.J. Carroll, P. Van Dam, C. De La Vaissiere, P. Weilhammer, Themistocles Bowcock, A. Tilquin, T. Lesiak, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, F. Simonetto, A. Lipniacka, G. Leder, B. Åsman, B. Koene, Paolo Morettini, D. Crennell, F. Mandl, J. G. Loken, P. Beilliere, W. Hao, O. Barring, J. Ridky, M. Dracos, E.N. Tsyganov, J. H. Wickens, Marco Paganoni, Jose Luis Contreras, L. Vitale, D. Radojicic, P. Lutz, Andrea Perrotta, G. Sette, A. Elliot Peisert, H. De Boeck, B. Jean-Marie, M. Tyndel, J. Maillard, B. Boštjančič, V. Perevozchikov, Tiziano Camporesi, G. Cosme, A. Baroncelli, N. G. Redaelli, Marco Bozzo, P. Frenkiel, J. Straver, F. Waldner, C. Walck, J. L. Fousset, Mitchell Wayne, V. V. Lapin, A. Chan, C. De Clercq, W. J. Murray, Itzhak Roditi, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, LUND MONTE-CARLO, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, E+E-ANNIHILATION, 01 natural sciences, JET FRAGMENTATION, K+P INTERACTIONS, PHYSICS, Nuclear physics, GEV/C, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], RHO0, Física nuclear, Multiplicity (chemistry), 010306 general physics, Particle Physics - Experiment
Abstract: A study of inclusive production of the meson resonances ρ0, K*0 (892), f{hook}0 (975) and f{hook}2 (1270) in hadronic decays of the Z0 is presented. The measured mean meson multiplicity per hadronic event is 0.83 ± 0.14 for the ρ0 0.64 ± 0.24 for the K*0 (892), 0.10 ± 0.04 for the f{hook}0 (975) in the momentum range p > 0.05pbeam (xp > 0.05) and 0.11 ± 0.05 for the f{hook}2 (1270) for xp > 0.1. These values and the corresponding differential cross sections ( 1 σhadr) dσ dxp for the vector mesons are in good agreement with the predictions of the JETSET 7.3 PS and HERWIG 5.4 models. The f{hook}2 (1270) production is overestimated by HERWIG but its xp-shape is correctly reproduced. The measured ratios of the production cross sections σ(f{hook}2(1270)) σ(ρ0) = 0.22 ± 0.08 and σ(f{hook}2(1270)) σ(f{hook}0(975)) = 3-1 +7 for xp > 0.1 are consistent with the results obtained in hadronic reactions. © 1993.
Published: 1993

26. The reaction e+e− → γγ(γ) at Z0 energies

Author: A. Campion, S. Volponi, R. Zukanovich Funchal, Marc Winter, C. Troncon, Ariel Goobar, J. H. Koehne, K. H. Becks, E. Vallazza, C. Vander Velde, P. Abreu, P. Borgeaud, Itzhak Roditi, Gueorgui Chelkov, M. Bonapart, F. Couchot, G. Hamel de Monchenault, J. Bjarne, P. Antilogus, F. Alted, P. Negri, W. Kucewicz, G. Matthiae, J.H. Bibby, E.N. Tsyganov, J. H. Wickens, K. Hamacher, W. Klempt, S-O. Holmgren, N. Crosland, W. Venus, Jose Luis Contreras, Tiziano Rovelli, G. Wormser, Pieter David, Peter M. Allen, B. A. Khomenko, M. Sesa, S. Gumenyuk, R. A. Brenner, J. Velasco, M. Pimenta, M. Voutilainen, G. Grosdidier, W. D. Apel, F. Richard, C. Matteuzzi, M. Crozon, D. Radojicic, Jan Ridky, N. De Groot, A. Stocchi, Francesco Navarria, J. Zúñiga, M. Kopf, S. J. Alvsvaag, M. Hahn, Alessandra Romero, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, W. Krupinski, I. Lippia, M. Jonker, A. Ruiz, J. Kesteman, G. Borisov, G. Kantardjian, C. J. Beeston, n. Brunner, B. Korzen, P. Checcia, S. Marti, T. Kreuzberger, R. Ovara, F. Verbeue, A. B. Fenyuk, P. Lutz, J. Pyyhtia, S. Almehed, F. Stichelbaut, F. Hahn, W. Van Doninck, R. Mc Kay, F. Adami, R. Keranen, H. J. Hilke, Francisco Matorras, Goeran Jarlskog, N. Yamdagni, P. F. Honore, D. Johnson, Th. D. Papadopoulou, Guenakh Mitselmakher, L. Di Ciaccio, R. Zitoun, A. Katargin, Mogens Dam, V. Canale, D. Isenhower, M. Los, R. Llosa, Claudia J. Stubenrauch, R. Seufert, H. Forsbach, Jon Christopher Wikne, C. Defoix, V. Lepeltier, J. E. Augustin, A. Pinsent, Demetrios Loukas, C. Ronnqvist, G. Zhang, Eleuterio Spiriti, F. Fulda-Quenzer, T. Todorov, A. P. Ostankov, J. Derkaoui, S. Squarcia, R. Holmes, H. Saarikko, T. Tabarelli, G. Vegni, Ph. Gavillet, T. Moa, T. Braun, S. Haider, K. Woschnagg, V. Kostukhin, M. L. Turluer, E. Graziani, E. Lieb, Edoardo Castelli, D. Reid, F. Pierre, E. K. Johansson, C. Bosio, J. M. Brunet, H. Foeth, José Salt, G. Gopal, C. Caso, D. Fassouliotis, Ariella Cattai, Luc Pape, Ugo Gasparini, F. Ledroit, Jacques Lemonne, E. J. Sanchez, Gianni Zumerle, B. Ueberschaer, M. Boratav, P. Roudeau, Jorge-Armando Benitez Garcia, T. P. A. Åkesson, O. Ullaland, G. Ekspong, Leif J. Jönsson, Piotr Zalewski, L. Vibert, P. Branchini, F. Kapusta, H. B. Crawley, Guido Barbiellini, Tiziano Camporesi, P. Poropat, Andromachi Tsirou, J. Guy, U. Trevisan, Giovanni Darbo, A. De Angelis, P. Collins, D. Delikaris, V. Vrba, N. van Eijndhoven, H. Schneider, Tim Adye, E. G. Anassontzis, M. Begalli, A. De Min, C. Kourkoumelis, Joao Varela, J. Werner, J. P. Engel, M. V. Castillo Gimenez, J. J. Gomez Y Cadenas, B. Franek, V.A. Uvarov, Daniel Bloch, S. Braibant, Borge Svane Nielsen, R. Lauhakangas, N. G. Redaelli, J. J. Lozano, M. H. Gros, H. Furstenau, Ahmimed Ouraou, V.M. Golovatyuk, A. G. Frodesen, S. Ueberschaer, Jan Buytaert, Marco Bozzo, M. T. Trainor, A. Lopez-Fernandez, D. Benedic, A. Klovning, G. Damgaard, Tuure Tuuva, A. Maltezos, A. G. Olshevski, M. Fernandez Alonso, Z. Hajduk, P. Frenkiel, S. Dagorte, T. Hofmokl, Marek Szczekowski, V. Obraztsov, Maciej Górski, Andrey Korytov, Maria Roberta Monge, A. Zalewska, Dietrich Liko, P. Privitera, W. T. Meyer, O. Pingot, M. Donszelmann, Jan Krolikowski, N. N. Khovanski, W. Bartl, E. Rosso, H. Klein, A. Hakansson, M. Michelotto, J. A. Valls Ferrer, I. Roncagliolo, B. Dalmagne, Laurent Chevalier, M. S. Bilenky, J. P. Laugier, M. Schaeffer, L.J. Carroll, N.I. Zimin, V. Gracco, C. Walck, K. D. Brand, B. De Lotto, P. Kokkinias, V. Ruhlmann, Milos Lokajicek, W. Dulinski, P. V. Chliapnikov, P. Weilhammer, Daniel Treille, M. Turala, W.S.C. Williams, Pavlos Ioannou, R. Moeller, D. Bertrand, L. Bugge, A. J. Camacho Rozas, Antonio Ferrer, J. Strauss, Roberto Cirio, Lucio Cerrito, L. K. Resvanis, D. Z. Toet, P. Folegati, W. Ruckstuhl, D. Crennell, F. Mandl, V. Chorowicz, Stefaan Tavernier, H. Wahlen, F. J. Harris, P. Beltran, J. Lindgren, Chiara Meroni, B. W. Heck, M. Richardson, J. E. Hooper, Carlos Lacasta, A. Perrotta, Krzysztof A. Rybicki, D. Wormald, A. Lettessier-Sevlon, M. Baubillier, Massimo Caccia, Vladimir Nikolaenko, G. Crosetti, Evgueni Vlasov, Guy Wilkinson, R. Lucock, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, T. Spasoff, J. Cuevas Maestro, Luca Tortora, Francesca Romana Cavallo, H. Herr, Mitchell Wayne, A. Firestone, P. Juillot, M. Mazzucato, F. Waldner, F. Djama, P. Szymanski, M. Battaglia, M. Pernicka, I. Hietanen, T. Bolognese, V. V. Lapin, Jesus Marco, G. Lenzen, Ph. Charpentier, R. Strub, J. E. Campagne, C. De Clercq, R. Sekulin, M. Koratzinos, W. J. Murray, Y. Dufour, J. J. Hernandez, L. Lyon, J. P. Gerber, P. D. Dauncey, G. Maehlum, P. O. Hulth, G. Sette, A. Elliot Peisert, M. Vollmer, R. Mc Nulty, H. De Boeck, B. Jean-Marie, M. Tyndel, K. W. Glitza, J. Maillard, V. Perevozchikov, G. Polok, U. Rossi, Paolo Giacomelli, William Trischuk, B. Nijjhar, P. Delpierre, E. Daubie, S. Delorme, M. Berggren, M. Zito, A. Augustinus, C. Stanescu, S. D. Hodgson, G. Myatt, G. E. Theodosiou, A. Passeri, J.M. Gago, Pierre Billoir, S. C. Blyth, B. Grossetete, Allan Hallgren, Giovanni Valenti, P. Vaz, G. Smadja, M.D.M. De Fez Laso, M. Szeptycka, A. Lounis, S. Biagi, H. P. Borner, Stefan Schael, Natale Demaria, D. Y. Bardin, R. Dzhelyadin, A. Markou, Olga Botner, L. Mathis, George Kalkanis, P. B. Renton, Patrick Jarry, G. Rinaudo, D. C. Fries, Krzysztof Korcyl, E. C. Katsoufis, U. Mjoernmark, M. J. Bates, Paul Baillon, Jose M. Benlloch, A. Grant, Carmen García, Marta Calvi, Alexander Lincoln Read, Geoffrey Smith, G. Leder, D. Gamba, L. S. Vertogradov, G. Voulgaris, I. Herbst, H. Palka, Juan Fuster, G. Skjevling, J. W. Lamsa, Hans Dijkstra, F. Barao, E. Higon, F. Scuri, A. M. Wetherell, L. Lanceri, J. N. Jackson, U. Kruener-Marquis, Mario Sannino, Paolo Ronchese, N. J. Kjaer, B.D. Hyams, M. A. Lopez Aguera, G. Tristram, Paula Eerola, B. Åsman, E. I. Rosenberg, L. O. Eek, Josef Hrubec, G. E. Kalmus, Fernand Grard, K. Kurvinen, Javier Sánchez, A. M. Segar, B. Bouquet, M. De Beer, P. S. Iversen, F. Fontanelli, M. Bonesini, G. W. Van Apeldoorn, R. J. Apsimon, Y. Sacquin, Pierre Astier, L. G. Tkatchev, L. Ventura, W. Bonivento, Tord Ekelof, H. Staeck, Hans Muller, B. Loerstad, P. N. Bogolubov, M. Pegoraro, E. Dahl-Jensen, H. Burmeister, Robert S. Brown, D. Vilanova, P. Herquet, J-C. Marin, G. Cosme, R. Gokieli, R. Contri, Spyros Tzamarias, M. Davenport, U. Nau-Korzen, A. Baroncelli, K. Doroba, E. Menichetti, Stefano Ragazzi, M. Houlden, Manolis Dris, P. Van Dam, W.H. Range, F. Cao, E. Lillethun, R. Sosnowski, F. Naraghi, V. G. Timofeev, Renato Turchetta, C. De La Vaissiere, G. Galeazzi, K. Moenig, A. Tilquin, Martino Margoni, E. Fokitis, J. Dolbeau, P. Bambade, Pawel Jalocha, Barry King, P.S.L. Booth, P. N. Ratoff, D. J. Holthuizen, K. Furnival, Charles Bricman, Wolfgang Adam, R. Frühwirth, Yu. Belokopytov, J. Timmermans, G. D. Alekseev, M. P. Clara, A. Lipniacka, M. Mc Cubbin, K. Hultqvist, Maria Elena Pol, S. Katsanevas, D. Husson, T. A. Filippas, M. Regler, G. Stavropoulo, I. A. Tyapkin, P. Yepes, H. Mueller, P. Kluit, B. Koene, A. Pullia, Paolo Morettini, J. G. Loken, P. Beilliere, W. A. Mitaroff, R. Pain, O. Barring, S. Maltezos, J. Drees, Evangelos Gazis, M. Dracos, Abreu, P., Adama, W., and Canale, Vincenzo
Subjects: Physics, Geometric matching, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Lambda, 01 natural sciences, Nuclear physics, Excited state, 0103 physical sciences, Physique des particules élémentaires, Atomic physics, 010306 general physics
Abstract: The total and differential cross-sections for the reaction e+e- → γγ(γ) are measured at centre of mass energies around 91 GeV using an integrated luminosity of 4.7 pb-1. The aggreement with QED prediction is good. Consequently there is no evidence for non-standard channels which would have the same experimental signature. The lower limits on the QED cuttoff parameters are Λ+ > 113 GeV and Λ- > 95 GeV. An upper limit on the effective coupling between a possible excited electron and the gamma is derived. At 95% confidence level the branching ratios for Z0 decay into π0γ, ηψ and γγγ are below 1.5 × 10-4, 2.8 × 10-4 and 1.4 × 10-4 respectively., 0, info:eu-repo/semantics/published
Published: 1991

27. Beam test results from a prototype for the delphi microvertex detector

Author: Achille Stocchi, A. Peisert, Marco Battaglia, M. Gröne, W. Kucewicz, A. Zalewska, M. Mazzucato, G. Maehlum, M. Turala, V. Chabaud, L. Hubbeling, G. Vegni, Anders W. Sandvik, N. Redaelli, Renato Turchetta, A. Czermak, Phillip Allport, Matteo Pegoraro, H. J. Seebrunner, Pawel Jalocha, Michael Flohr, Tuure Tuuva, Clara Troncon, Massimo Caccia, G. Barichello, Hans Dijkstra, P. Kapusta, Roland Horisberger, F. Simonetto, Chiara Meroni, E. Sundell, M. Tyndel, and P. Weilhammer
Subjects: Very-large-scale integration, Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Readout electronics, 01 natural sciences, 0103 physical sciences, Measurement precision, High Energy Physics::Experiment, Detectors and Experimental Techniques, 010306 general physics, business, Instrumentation, Image resolution, computer, Beam (structure), Delphi, Computer hardware, computer.programming_language
Abstract: Results are presented from a test in the CERN SPS North Area of a prototype of the DELPHI microvertex detector. Full-sized modules built up from prototype ac-coupled detectors and VLSI readout electronics were used. The spatial resolution of the detectors equipped with prototype VLSI chips was measured to be 6.5 μm. The system aspects, including the readout, were found to work well. Extrapolating to the final components we expect to achieve a measurement precision of 5 μm with the DELPHI microvertex detector.
Published: 1990

28. Search for the t and b' quarks in hadronic decays of the Z0 boson

Author: P. Abreu, W. Adam, F. Adami, T. Adye, G.D. Alekseev, J.V. Allaby, P. Allen, S. Almehed, F. Alted, S.J. Alvsvaag, U. Amaldi, E. Anassontzis, W.D. Apel, B. Asman, C. Astor Ferreres, J.E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, D.Yu. Bardin, A. Baroncelli, O. Barring, W. Bartl, M.J. Bates, B.V. Batyunia, M. Baubillier, K.H. Becks, C.J. Beeston, P. Beilliere, I. Belokopytov, P. Beltran, D. Benedic, J.M. Benlloch, M. Berggren, D. Bertrand, S. Biagi, F. Bianchi, J.H. Bibby, M.S. Bilenky, P. Billor, J. Bjarne, D. Bloch, P.N. Bogolubov, D. Bollini, T. Bolognese, M. Bonapart, Y.E. Bonyushkin, P.S.L. Booth, M. Boratav, P. Borgeaud, H. Borner, C. Bosio, O. Botner, B. Bouquet, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, C. Bricman, R.C.A. Brown, N. Brummer, J.M. Brunet, L. Bugge, T. Buran, H. Burmeister, C.M. Buttar, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, J.E. Campagne, A. Campion, T. Camporesi, V. Canale, F. Cao, L. Carroll, C. Caso, E. Castelli, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, P. Charpentier, P. Checchia, G.A. Chelkov, L. Chevalier, P.V. Chliapnikov, V. Chorowicz, R. Cirio, M.P. Clara, J.L. Contreras, R. Contri, G. Cosme, F. Couchot, H.B. Crawley, D. Crennel, M. Cresti, G. Crosetti, N. Crosland, M. Crozon, J. Cuevas Maestro, S. Czellar, S. Dagoret, E. Dahl-Jensen, B. D'Almagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, M. Davenport, P. David, A. De Angelis, M. De Beer, H. De Boeck, W. De Boer, C. De Clercq, M.D.M. De Fez Laso, N. De Groot, C. De La Vaissiere, B. De Lotto, C. Defoix, D. Delikaris, P. Delpierre, N. Demaria, L. Di Ciaccio, A.N. Diddens, H. Dijkstra, F. Djama, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, W. Dulinski, R. Dzhelyadin, D.N. Edwards, L.O. Eek, P.A.M. Eerola, G. Ekelop, G. Ekspong, J.P. Engel, V. Falaleev, A. Fenyuk, M. Fernandez Alonso, A. Ferrer, S. Ferroni, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, H. Forsbach, B. Franek, K.E. Fransson, P. Frenkiel, D.C. Fries, R. Fruhwirth, F. Fulda-Quenzer, H. Fuerstenau, J. Fuster, J.M. Gago, G. Galeazzi, D. Gamba, U. Gasparini, P. Gavillet, S. Gawne, E.N. Gazis, P. Giacomelli, K.W. Glitza, R. Gokieli, V.M. Golovatyuk, A. Goobar, G. Gopal, M. Gorski, Yu. Gouz, V. Gracco, A. Grant, F. Grard, E. Graziani, I.A. Gritsaenko, M.H. Gros, G. Grosdidier, B. Grossetete, S. Gumenyuk, J. Guy, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G. Hamel De Monchenault, J.F. Harris, B. Heck, I. Herbst, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, H.J. Hilke, T. Hofmokl, R. Holmes, S.O. Holmgren, J.E. Hooper, M. Houlden, J. Hrubec, P.O. Hulth, K. Hultqvist, D. Husson, B.D. Hyams, P. Ioannou, P.S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, R.B. Kadyrov, V.G. Kadyshevsky, G. Kalkanis, G. Kalmus, G. Kantardjian, F. Kapusta, P. Kapusta, S. Katsanevas, E.C. Katsoufis, R. Keranen, J. Kesteman, B.A. Khomenko, B. king, H. Klein, W. Klempt, A. Klovning, P. Kluit, J.H. Koehne, B. Koene, P. Kokkinias, M. Kopf, M. Koratzinos, K. Korcyl, A.V. Korytov, B. Korzen, M. Kostrikov, C. Kourkoumelis, T. Kreuzberger, J. Krolikowski, U. Kruener-Marquis, W. Krupinski, W. Kucewicz, K. Kurvinen, M.I. Laakso, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, J.P. Laugier, R. Lauhakangas, P. Laurikainen, G. Leder, F. Ledroit, J. Lemonne, G. Lenzen, V. Lepeltier, A. Letessier-Selvon, P.K. Lichtenwagner, E. Lieb, E. Lilestol, E. Lillethun, I. Lippi, R. Llosa, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez, M.A. Lopez Aguera, D. Loukas, J.J. Lozano, R. Lucock, B. Lund-Jensen, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maltezos, F. Mandl, J. Marco, J.C. Marin, A. Markou, L. Mathis, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, E. Menichetti, C. Meroni, W.T. Meyer, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, H. Muller, G. Myatt, F. Naraghi, U. Nau-Korzen, F.L. Navarria, P. Negri, B.S. Nielsen, M. Nigro, V. Nikolaenko, V. Obraztsov, R. Orava, A. Ouraou, R. Pain, K. Pakonski, H. Palka, T. Papadopoulou, L. Pape, P. Pasini, A. Passeri, M. Pegoraro, V. Perevozchikov, M. Pernicka, M. Pimenta, O. Pingot, C. Pinori, A. Pinsent, M.E. Pol, G. Polok, P. Poropat, P. Privitera, A. Pullia, J. Pyyhtia, A.A. Rademakers, D. Radojicic, S. Ragazzi, W.H. Range, P.N. Ratoff, A.L. Read, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, P. Ronchese, E. Rosenberg, U. Rossi, E. Rosso, P. Roudeau, T. Rovelli, V. Ruhlmann, A. Ruiz, H. Saarikko, D. Sacco, Y. Sacquin, A.B. Sadovsky, E. Sanchez, E. Sanchis, M. Sannino, M. Schaeffer, W. Schneider, F. Scuri, A. Sebastia, A.M. Segar, R. Sekulin, M. Sessa, G. Sette, R. Seufert, R.C. Shellard, P. Siegrist, S. Simonetti, F. Simonetto, T.B. Skaali, J. Skeens, G. Skjevling, G. Smadja, G.R. Smith, R. Sosnowski, K. Spang, T. Spassoff, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, C. Stubenrauch, M. Szczekowski, M. Szeptycka, P. Szymanski, S. Tavernier, G. Theodosiou, A. Tilquin, J. Timmermans, L.G. Tkatchev, D.Z. Toet, A.K. Topphol, L. Tortora, D. Treille, U. Trevisan, G. Tristram, C. Troncon, E.N. Tsyganov, M. Turala, R. Turchetta, M.L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, F. Udo, S. Ueberschaer, V.A. Uvarov, G. Valenti, E. Vallaza, J.A. Valls, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, N. Van Eijndhoven, C. Vander Velde, J. Varela, P. Vaz, G. Vegni, M.E. Veitch, E. Vela, J. Velasco, L. Ventura, W. Venus, F. Verbeure, L. Vibert, D. Vilanova, E.V. Vlasov, A.S. Vodopianov, M. Vollmer, G. Voulgaris, M. Voutilainen, H. Wahlen, C. Walck, F. Waldner, M. Wayne, P. Weilhammer, J. Werner, A.M. Wetherell, J.H. Wickens, J. Wikne, W.S.C. Williams, M. Winter, D. Wormald, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, E. Zevgolatakos, G. Zhang, N.I. Zimin, A.I. Zinchenko, R. Zitoun, R. Zukanovich Funchal, G. Zumerle, J. Zuniga, Heyd, Yvette, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Quark, Nuclear and High Energy Physics, Top quark, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Electron–positron annihilation, Hadron, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Collider, Charged current, Boson, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Physique des particules élémentaires, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: We present a search for the third generation up type quark t and a possible fourth down type quark b' in hadronic Z0 decays observed in DELPHI at the LEP collider. For any scenario with a decay through the charged current or into a charged Higgs with a mass at least 6 GeV/c2 below the t and 3 GeVc2 below the b' mass, we set a lower limit for the t quark mass at 44.0 GeV/c2 and for the b' mass at 44.5 GeV/c2. For specific scenarios the mass limits are slightly higher, e.g. for charged current decays the limits are 44.5 and 45.0 GeV/c2 respectively, where all limits are given at a 95% confidence level. © 1990., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 1990

29. Study of the leptonic decays of the Z0 boson

Author: A. Klovning, U. Mjoernmark, Sandor Czellar, G. Polok, M. Bozzo, V.A. Uvarov, A. Ruiz, Ugo Gasparini, Paolo Pasini, P. Queru, W. K. Van Doninck, F. Richard, C. Matteuzzi, M. Hahn, B. Bouqquet, A. G. Frodesen, Andrey Korytov, Jan Krolikowski, N. N. Khovanski, W. Bartl, B. V. Batyunia, R. Pain, B. Koene, E. Lieb, A. Sebastia, I. Lippi, E.N. Tsyganov, J. H. Wickens, Jose Luis Contreras, C. Vander Velde, C. Lambropoulos, Ugo Amaldi, E. Zevgolatakos, R. Rongved, S. Almehed, C. Pinori, J. P. Laugier, J.A.M.A. Buytaert, A.N. Diddens, U. Kruener-Marquis, M. Gorbics, J.A. Lidbury, D. Radojicic, J.P. Grillet, M. Pimenta, N. De Groot, M. De Beer, G. Wormser, Ariella Cattai, Jacques Lemonne, A. Stocchi, Guido Barbiellini, M. Pernicka, G. Lenzen, J. E. Campagne, M. Koratzinos, L. Guglielmi, M. Bonapart, Wolfgang Adam, D. Bertrand, Francesco Navarria, Paolo Morettini, J. G. Loken, J.F. Genat, B. Kisielewski, Paolo Ronchese, T. Kreuzberger, J.C. Raoul, G. Goujon, G. Crosetti, Evgueni Vlasov, M. Nigro, Jan Ridky, A. S. Vodopianov, Tuure Tuuva, Clara Troncon, Itzhak Roditi, Gueorgui Chelkov, J. Guy, B. Dalmagne, M. Kopf, J. N. Jackson, P. Kokkinias, M. Passeneau, S. Ferroni, Z. Hajduk, F. Udo, G. Petrucci, M. Nordberg, R. Lauhakangas, H. Herr, Winfried Mitaroff, P. Beltran, Louis Lyons, C.W. Salgado, J. Mas, P. Lutz, G. Tristram, P. Laurikainen, S. Du, Paula Eerola, O. Ullaland, F. Djama, C. Gaspar, S. Haider, D.N. Edwards, C. Caso, M. Sessa, V. Castillo Gimenez, P. Negri, Tim Adye, C. De La Vaissiere, Laurent Chevalier, U. Trevisan, N. Crosland, J.V. Allaby, M. Jonker, Y. Sacquin, Maciej Górski, A. B. Fenyuk, L. Mattsson, J.J. Jaeger, Tiziano Rovelli, M. Cresti, J.H. Bibby, G.P. Barreira, B. Lund-Jensen, G. E. Kalmus, G. D. Alekseev, J. M. Yelton, A. Passeri, S. Gawne, Klaus Hamacher, A. Firestone, G. Kantardjian, C. De Clerco, Milos Lokajicek, K. Woschnagg, M. Nonni, P. Branchini, J. Krstic, Göran Jarlskog, W. Bell, N. I. Zimin, Stavros Maltezos, Mikael Berggren, H. Hofmann, J. Cuevas Maestro, H. B. Crawley, V. Lepeltier, H. Forsbach, F. Fulda-Quenzer, T. Bolognese, E. C. Katsoufis, G. Gopal, A. Letessier-Selvon, S. Gumenyuk, Nikolai Smirnov, V. Ruhlmann, O. Barring, G. Zhang, Paolo Checchia, B. Franek, W. Kucewicz, G. Matthiae, C. Stanescu, L.J. Carroll, M. L. Turluer, M. Vollmer, D. Reid, Ph. Gavillet, P. Spentzouris, E. Graziani, B. Jean-Marie, A. Hakansson, E. J. Sanchez, W. D. Apel, S. J. Alvsvaag, Roland Horisberger, L. Bugge, G. Hamel de Monchenault, E. G. Anassontzis, J. P. Engel, I. Kontaxis, P. Lorenz, P. Roudeau, M. J. Bates, Edoardo Castelli, D. Z. Toet, J. Joensuu, J. M. Brunet, H. Lebbolo, Josef Strauss, R. Llosa, N. Bingefors, P. Van Dam, M. Fernandez Alonso, P. Privitera, M.V. Reis, P. Weilhammer, Luc Pape, D. Imbault, R. Zitoun, D. Langerveld, P. Abreu, P. Borgeaud, Borge Svane Nielsen, M. H. Gros, F. J. Harris, H. Foeth, P. Allen, Gianni Zumerle, F. Astesan, Toralf Bernhard Skaali, Maria Roberta Monge, S. Barlag, A. Zalewska, Valery Pozdnyakov, G. Cabras, Krzysztof Doroba, Chiara Meroni, A.K. Topphol, C. Brand, M. Mc Cubbin, G. Ekspong, K. Hultqvist, Renato Turchetta, B. Grossetete, Allan Hallgren, B. Korzen, P. Poropat, G. Damgaard, C. Poiret, L. Tortora, Giovanni Valenti, I. Belokopytov, M. Boratav, D. Gamba, G. Voulgaris, Sverker Johansson, W. T. Meyer, Pierre Billoir, Mogens Dam, K. Rybicki, W. Venus, B. Muryn, V. Obraztsov, P. Aarnio, V. Gracco, M. Schaeffer, Andre Augustinus, P. Herquet, H. Palka, G. Skjevling, R. Contri, Giovanni Darbo, S. Simonetti, M. Voutilainen, G. Grosdidier, R. Sekulin, R. Dzhelyadin, T. Pettersen, Jose M. Benlloch, A. Grant, R.B. Kadyrov, F. Barao, P. V. Chliapnikov, M. Crozon, Craig Buttar, A. De Angelis, D. Delikaris, N. van Eijndhoven, J. Werner, L. Viseu Melo, E. Sundell, M.I. Laakso, Daniel Bloch, Hans Dijkstra, I. Herbst, Katri Huitu, T.K. Truong, B. Goret, M. Baubillier, R. Lucock, Alessandra Romero, Georgios Stavropoulos, J.M. Noppe, M. Turala, Barry King, Ahmimed Ouraou, Pavlos Ioannou, F. Simonetto, R. Gokieli, A. Tilquin, J. Perez, I.A. Gritsaenko, G. Leder, G. B. Chadwick, E. Higon, R. Seufert, V.M. Golovatyuk, W.S.C. Williams, Daniel Treille, J. J. Hernandez, R. Frühwirth, Manolis Dris, J. Pyythia, B. Åsman, P. Adrianos, C. J. Beeston, F. Scuri, Juan Fuster, N.K. Vishnevskij, A. M. Zaitsev, E. K. Johansson, J. E. Hooper, J.C. Le Grand, J. Timmermans, J. Pagot, A. Pullia, J.-E. Augustin, A. M. Wetherell, E. Lillethun, T. Moa, G. Maehlum, K. Pakonski, F. Bianchi, J. Michałowski, Kjell Fransson, L. Lanceri, D. Husson, J. Barlow, E. Vela, Lucio Cerrito, T. Buran, J.B.M. Pattison, I. A. Tyapkin, M. A. Houlden, D. Crennell, F. Mandl, A. Pinsent, A.M. Romaya, M. Ellila, Guenakh Mitselmakher, A.J. Camacho Rozas, D. Vilanova, G. Smadja, D.Yu. Barbin, S. Squarcia, K. W. Glitza, A. Zinchenko, E. Menichetti, Olga Botner, Krzysztof Korcyl, H. Saarikko, T. Hofmokl, Marek Szczekowski, N. Dimitriou, Stefano Ragazzi, José Salt, F. Couchot, R. Sosnowski, B. W. Heck, E. Rosso, H. Klein, H. Schneider, V. G. Timofeev, S. Nounos, J.-P. Vanuxem, Panos Kostarakis, M.-H. Gros, A. Markou, F. Cao, V. Falaleev, E. Lillestol, V. Chorowicz, O.A. Maeland, R. Downs, J. Haissinski, S. Braibant, Tord Ekelof, H. Staeck, G. Galeazzi, R. Strub, B. Loerstad, K. Moenig, S. Cairanti, H. Burmeister, D. Sacco, M. Mazzucato, E. Fokitis, Robert S. Brown, J. Drees, P. Szymanski, Patrick Jarry, M. Winter, G. Rinaudo, Evangelos Gazis, G. Vegni, N. Brummer, W. H. Range, E. Spiriti, B.D. Hyams, E. I. Rosenberg, K. Kurvinen, M. Dracos, R. Ragazzon, P. Siegrist, J-C. Marin, M. Davenport, B. Grung, A. A. Rademakers, S. O. Holmgren, D. Benedic, D. Loukas, George Kalkanis, P. B. Renton, M. Flinn, L. O. Eek, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, A. M. Segar, D. C. Fries, G. Kuhn, P. S. Iversen, F. Fontanelli, J. Skeens, C. Astor Ferreres, J. Velasco, Marta Calvi, L. Tkachev, Vincenzo Canale, Geoffrey Smith, G. W. Van Apeldoorn, G. Sette, L.S. Curwen, W. Dulinski, L. Ventura, Håkan T Johansson, B. Lavigne, S. Palma Lopes, S. Quinton, Hans Muller, T. Odegaard, P. N. Bogolubov, Christine Kourkoumelis, E. Dahl-Jensen, H. De Boeck, M. Tyndel, P. Vaz, D. Bollini, M. Pegoraro, J. Maillard, P. Jalocha, S. Biagi, H. P. Borner, V. Kadyshevskiy, V. Perevozchikov, Theodora Papadopoulou, Tiziano Camporesi, N. G. Redaelli, P. Frenkiel, R. Moeller, A. Baroncelli, A. Hrisoho, H. J. Hilke, C. Bosio, F. Waldner, K. D. Brand, Antonio Ferrer, Roberto Cirio, L. K. Resvanis, C. Walck, G. E. Theodosiou, M. Zito, O. Pingot, K. Spang, E. Sanchis, L. Mathis, Massimo Caccia, N. Yamdagni, Paul Baillon, Alexander Lincoln Read, Vladimir Nikolaenko, M. Szeptycka, P. Juillot, M. Mur, M.A. Lopez Aguera, Francesca Romana Cavallo, Mitchell Wayne, V. V. Lapin, P. O. Hulth, F. Rossel, P. Delpierre, E. Daubie, G. Myatt, J.M. Gago, Joao Varela, P. Kluit, P. R. S. Gomes, S. Ueberschaer, A. Maltezos, M. Gaillard, A. Campion, R. Zukanovich Funchal, H. Wahlen, Ariel Goobar, D. Fraissard, K. H. Becks, P. Antilogus, M. E. Veitch, J. Bjarne, W. Klempt, F. Hahn, F. Stichelbaut, R. Mc Kay, Cesare Chiccoli, F. Adami, M. Barranco-Luque, R. Keranen, Philippe Charpentier, Mario Sannino, R. Orava, S. Topp-Jorgensen, Maria Elena Pol, S. Katsanevas, T. A. Filippas, M. Regler, Yu. Sedykh, B. Van Eijk, H. Mueller, J. Dolbeau, P. Folegati, P.S.L. Booth, P. N. Ratoff, J. J. Gómez Cadenas, J. Marco, M. P. Clara, Piotr Zalewski, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), DELPHI, Heyd, Yvette, Abreu, P., Adam, W., Canale, Vincenzo, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Width ratio, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutrino, 010306 general physics, Particle Physics - Experiment, Lepton, Boson
Abstract: Measurements are presented of the cross section ratios Rℓ = σℓ(e+e-→ℓ+ℓ -)/σhh(e+e-→hadrons) for ℓ = e, μ and τ using data taken from a scan around the Z0. The results are Re = (5.09±0.32±0.18)%, Rμ = (4.96±0.35±0.17)% and Rτ,=(4.72±0.38± 0.29)% where, for the ratio Re, the t-channel contribution has been subtracted. These results are consistent with the hypothesis of lepton universality and test this hypothesis at the energy scale s ∼ 8300 GeV2. The absolute cross sections σℓ(e+e-→ℓ +ℓ-) have also been measured. From the cross sections the leptonic partial widths Γe = (83.2±3.0±2.4) MeV, (ΓeΓμ) 1/2=(84.6±3.0±2.4) MeV and (ΓeΓτ) 1/2=(82.6±3.3±3.2) MeV have been extracted. Assuming lepton universality the ratio Γℓ/Γh=(4.89±0.20± 0.12) × 10-2 was obtained, together with Γℓ=(83.6±1.8±2.2) MeV. The number of light neutrino species is determined to be Nv=3.12±0.24±0.25. Al the data are consistent with the predictions of the standard model., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 1990

30. Assessment of photodiodes as a light detector for PET scanners

Author: Torsten Solf, Thomas Frach, Klaus Fiedler, G. Maehlum, Walter Ruetten, and Andreas Thon
Subjects: Physics, Scintillation, Photomultiplier, Physics::Instrumentation and Detectors, business.industry, Preamplifier, Quantum noise, Photodetector, Avalanche photodiode, Noise (electronics), Photodiode, law.invention, Optics, law, Optoelectronics, business
Abstract: Current PET systems based on pixelated scintillator arrays coupled to photomultiplier tubes suffer from pile-up and electronics dead time at high count rates. With a pixelated readout, i.e. one-to-one coupling of a scintillator crystal to a photo detector, these effects can be strongly reduced. Recent developments of high light output scintillators like LYSO and LaBr3 in combination with very low noise amplifiers based on modern CMOS processes make it possible to use high quantum efficiency blue-sensitive PIN photodiodes as a light detector. To explore the potential of this approach, a model of the signal detection chain was implemented. It comprises the scintillation light pulse and its quantum noise, optical coupling, charge conversion in the diode, noise sources of the integrating amplifier, shaper circuits for the energy and timing channel, and the discriminator for the timing channel. The model is verified using off-the-shelf PIN photodiodes and a dedicated CMOS preamplifier excited by a picosecond laser as well as scintillator pulses. The model predicts that with high light output scintillators, high quantum efficiency photodiodes and optimized preamplifiers, a pixelated PET readout with very good energy resolution and sufficient timing resolution can be realized. To complement the study, an APD-based readout is also considered and the related signal to noise issues are discussed
Published: 2005

31. A Novel Detection System Consisting of a Large-Area Sensor and a Multicell Si-Pad Array Operated in Spectroscopic Mode for X-Ray Breast Imaging

Author: G. Maehlum, D.G. Darambara, and Paul J. Sellin
Subjects: Physics, Diffraction, Nuclear and High Energy Physics, Breast imaging, business.industry, Resolution (electron density), Chip, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Data acquisition, Optics, Nuclear Energy and Engineering, 030220 oncology & carcinogenesis, Medical imaging, Electronic engineering, Dosimetry, Electrical and Electronic Engineering, business, Energy (signal processing)
Abstract: The ability of coherent X-ray scatter to provide the molecular structure of breast tissues could add a new dimension in X-ray breast imaging capable of tracking the molecular structural changes during disease progression and of improving the sensitivity to low-contrast lesions without increasing the radiation dose. Work is under way to build a laboratory prototype dual-sensor breast-imaging scanning system, which combines the diagnostic information from both the transmitted primary and the forward scattered X-rays. This required the design and development of a coherent X-ray scatter detection system based on a high-resistivity multielement two-dimensional (2-D) Si-pad array, a multichannel low-noise pulse processing front-end electronics chip, the XA1.3, and a new DAQ system. X-rays in the energy range of 17-45 keV can be detected with a FWHM energy resolution of 1-3 keV. Results on the characterization and optimization of the detector-readout electronics-DAQ system and its performance to measure diffraction signatures of most commonly used breast-equivalent materials of interest are presented.
Published: 2004

32. Search for antihelium in cosmic rays

Author: Z.R. Dong, S. Bizzaglia, G. Ambrosi, J. Casaus, M. Pimenta, T. S. Dai, Samuel C.C. Ting, L. Djambazov, B.C. Wang, G. Molinari, A. Klimentov, B. Bertucci, S. X. Wu, R. Pilastrini, G. Lamanna, L.G. Yan, R. Siedling, J. Favier, Philipp Azzarello, J. J. Torsti, Antonino Zichichi, A. Hasan, Mauro Menichelli, L. Ao, Inkyu Park, J.P. Vialle, M. Steuer, P.C. Xia, Peter H. Fisher, Ilya Usoskin, P. G. Rancoita, Jing Wang, F. Palmonari, J. Isbert, M. Ribordy, G. Boella, H. von Gunten, P. Crespo, W. J. Burger, N. Fouque, R. Ionica, Federico Cindolo, J.P. Richeux, R. Cavalletti, D.X. Zhao, U. Roeser, N.A. Chernoplekov, C. G. Yang, Nicolas Produit, M. Buenerd, A. Cotta-Ramusino, R. Flaminio, J. P. Da Cunha, Anselmo Margotti, D. Rapin, V. Plyaskin, W. Kim, Roberto Battiston, G.Y. Zhu, W.Z. Zhu, G. Fluegge, G. Bruni, G. Viertel, P. Levtchenko, E. Fiandrini, G. Laurenti, K. Luebelsmeyer, S. Waldmeier Wicki, S.C. Lee, Yu. Galaktionov, F. Massera, D. Vité, J. Ulbricht, A. Chiarini, Hao Zhang, H. S. Chen, C. Rossin, G. Pancaldi, Felicitas Pauss, S. Recupero, Ciaran Williams, R. Kossakowski, W. Karpinski, J. Alcaraz, F. Barao, P. Yeh, E. Emonet, L.K. Ding, H.T. Liu, E. P. Velikhov, G. Torromeo, M. Basile, G.S. Sun, A. Pevsner, J.L. Yan, X. D. Cai, L. Baldini, F. Mezzanotte, C.L. Liu, L. Bellagamba, S. Blasko, K. Hangarter, J. Berdugo, Adrian Biland, G. Barbier, J. Vandenhirtz, V. Hermel, A. Arefiev, E. Prati, Jose Maria Kenny, R. R. McNeil, T.G. Guzik, B. Meillon, W.K. Gu, G. Kenney, I. D'Antone, J.P. Wefel, Markus Cristinziani, T. Eronen, R. Becker, Y.L. Chuang, P. Bene, B. Alpat, D. Luckey, E. Riihonen, A. Mihul, M. Jongmanns, C.C. Feng, D. Casadei, W. Wallraff, J. Krieger, H.L. Zhuang, G. Castellini, Massimo Gervasi, Zhuoxiang Ren, G. Schwering, W. Hungerford, A. Papi, Timo Laitinen, D. Santos, F. Tenbusch, B. Verlaat, P. Berges, Raffaele Mezzenga, S. Urpo, Ari Mujunen, G. Laborie, V. Shoutko, M. Pauluzzi, Y. S. Lu, G.P. Barreira, Yun Wang, V. Commichau, J. Truemper, A. Pesci, D. Ren, M. Capell, V. Koutsenko, Eino Valtonen, F. Vezzu, P. Cannarsa, C. Camps, T.P. Li, M. Ionica, H. Postema, A. Contin, M. Yang, E. Babucci, U. Becker, A. Lebedev, Dong-Chul Son, P. Giusti, I. Lopes, E. Perrin, F. J. Eppling, D. Alvisi, G. Lu, F. Raupach, C. Maña, P. Extermann, S. M. Ting, H. Hofer, G. Esposito, I. Vetlitsky, G. Sartorelli, M. Lolli, G. Maehlum, E.A. Werner, Fabio Finelli, Z.G. Chen, Werner Lustermann, Giuseppe Levi, X. W. Tang, Tao Song, M. Bourquin, V. Pojidaev, E. Shoumilov, H. Suter, J. D. Burger, Roald Z. Sagdeev, A. Mourao, J. Ritakari, Y. H. Chang, D. Barancourt, N. Dinu, H. Anderhub, Tzihong Chiueh, M. A. Huang, Jorge Dias de Deus, F. Mayet, A. Schultz von Dratzig, Alcaraz, J, Alvisi, D, Alpat, B, Ambrosi, G, Anderhub, H, Ao, L, Arefiev, A, Azzarello, P, Babucci, E, Baldini, L, Basile, M, Barancourt, D, Barao, F, Barbier, G, Barreira, G, Battiston, R, Becker, R, Becker, U, Bellagamba, L, Béné, P, Berdugo, J, Berges, P, Bertucci, B, Biland, A, Bizzaglia, S, Blasko, S, Boella, G, Bourquin, M, Bruni, G, Buenerd, M, Burger, J, Burger, W, Cai, X, Cavalletti, R, Camps, C, Cannarsa, P, Capell, M, Casadei, D, Casaus, J, Castellini, G, Chang, Y, Chen, H, Chen, Z, Chernoplekov, N, Chiarini, A, Chiueh, T, Chuang, Y, Cindolo, F, Commichau, V, Contin, A, Cotta Ramusino, A, Crespo, P, Cristinziani, M, Dacunha, J, Dai, T, Deus, J, Ding, L, Dinu, N, Djambazov, L, D'Antone, I, Dong, Z, Emonet, P, Eppling, F, Eronen, T, Esposito, G, Extermann, P, Favier, J, Feng, C, Fiandrini, E, Finelli, F, Fisher, P, Flaminio, R, Fluegge, G, Fouque, N, Galaktionov, Y, Gervasi, M, Giusti, P, Gu, W, Guzik, T, Hangarter, K, Hasan, A, Hermel, V, Hofer, H, Huang, M, Hungerford, W, Ionica, M, Ionica, R, Isbert, J, Jongmanns, M, Karpinski, W, Kenney, G, Kenny, J, Kim, W, Klimentov, A, Krieger, J, Kossakowski, R, Koutsenko, V, Laborie, G, Laitinen, T, Lamanna, G, Laurenti, G, Lebedev, A, Lee, S, Levi, G, Levtchenko, P, Li, T, Liu, C, Liu, H, Lolli, M, Lopes, I, Lu, G, Lu, Y, Lübelsmeyer, K, Luckey, D, Lustermann, W, Maehlum, G, Maña, C, Margotti, A, Massera, F, Mayet, F, Mcneil, R, Meillon, B, Menichelli, M, Mezzanotte, F, Mezzenga, R, Mihul, A, Molinari, G, Mourao, A, Mujunen, A, Palmonari, F, Pancaldi, G, Papi, A, Park, I, Pauluzzi, M, Pauss, F, Perrin, E, Pesci, A, Pevsner, A, Pilastrini, R, Pimenta, M, Plyaskin, V, Pojidaev, V, Postema, H, Prati, E, Produit, N, Rancoita, P, Rapin, D, Raupach, F, Recupero, S, Ren, D, Ren, Z, Ribordy, M, Richeux, J, Riihonen, E, Ritakari, J, Roeser, U, Roissin, C, Sagdeev, R, Santos, D, Sartorelli, G, Schultzvondratzig, A, Schwering, G, Shoutko, V, Shoumilov, E, Siedling, R, Son, D, Song, T, Steuer, M, Sun, G, Suter, H, Tang, X, Ting, S, Tenbusch, F, Torromeo, G, Torsti, J, Trümper, J, Ulbricht, J, Urpo, S, Usoskin, I, Valtonen, E, Vandenhirtz, J, Velikhov, E, Verlaat, B, Vetlitsky, I, Vezzu, F, Vialle, J, Viertel, G, Vité, D, Vongunten, H, Waldmeierwicki, S, Wallraff, W, Wang, B, Wang, J, Wang, Y, Wefel, J, Werner, E, Williams, C, Wu, S, Xia, P, Yan, J, Yan, L, Yang, C, Yang, M, Yeh, P, Zhang, H, Zhao, D, Zhu, G, Zhu, W, Zhuang, H, Zichichi, A, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and AMS
Subjects: Astrophysics and Astronomy, Nuclear and High Energy Physics, FOS: Physical sciences, chemistry.chemical_element, Space Shuttle, Cosmic ray, Astrophysics, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], High Energy Physics - Experiment (hep-ex), FIS/05 - ASTRONOMIA E ASTROFISICA, Rigidity (electromagnetism), 0103 physical sciences, Alpha Magnetic Spectrometer, 010306 general physics, Helium, Physics, 010308 nuclear & particles physics, Astrophysics (astro-ph), Astronomy, Flux ratio, FIS/01 - FISICA SPERIMENTALE, chemistry, Cosmic rays: anti-helium, FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
Abstract: The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 in a 51.7 degree orbit at altitudes between 320 and 390 km. A total of 2.86 * 10^6 helium nuclei were observed in the rigidity range 1 to 140 GV. No antihelium nuclei were detected at any rigidity. An upper limit on the flux ratio of antihelium to helium of < 1.1 * 10^-6 is obtained., 18 pages, Latex, 9 .eps figures
Published: 2000

33. High-precision tracking and charge selection with silicon strip detectors for relativistic ions

Author: Roberto Battiston, H. Sann, Adrian Biland, A. Chen, M. Pauluzzi, D. Ren, Nicolas Produit, Yuan-Hann Chang, W. Wallraff, Mauro Menichelli, D. Rapin, Maria Ionica, M. Bourquin, Willis Lin, Ionica R, G. Ambrosi, D. Vité, E. Fiandrini, D Schardt, M. Ribordy, C Balboni, S.R. Hou, Werner Lustermann, Behcet Alpat, W. J. Burger, Dinu N, K Sümmerer, G. Maehlum, P. Extermann, G. Viertel, and S.X Wu
Subjects: Elastic scattering, Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, Charge number, chemistry.chemical_element, Tracking (particle physics), Particle detector, Ion, Computational physics, Semiconductor detector, chemistry, Ionization, Atomic physics, Instrumentation
Abstract: High-precision tracking and charge selection with silicon strip detectors for relativistic ions has been investigated using a 12C beam of 1.5 GeV/u at GSI with prototype modules developed for the AMS tracker. The ionization energy loss is measured and compared to the Landau}Vavilov theory for ions of charge number up to Z"6. The linearity in Z2 is examined. The capability to distinguish di!erent Z values based on the ionization energy loss is evaluated. The spatial resolution of the silicon strip detectors is investigated for carbon ions. The angular distribution of multiple Coulomb scattering is studied with lead absorbers. The results are compared to the Molie' re theory and the Gaussian approxima- tion of GEANT calculations. ( 2000 Published by Elsevier Science B.V. All rights reserved.
Published: 2000

34. High resolution tracking with silicon strip detectors for relativistic ions

Author: H. Sann, Roberto Battiston, Mauro Menichelli, D. Rapin, G. Maehlum, Maria Ionica, M. Ribordy, Werner Lustermann, G. Ambrosi, Behcet Alpat, Y. H. Chang, V. Postolache, S.R. Hou, C Balboni, M. Pauluzzi, D. Ren, Hans Geissel, D Schardt, Nicolas Produit, W. J. Burger, G. Viertel, and K Sümmerer
Subjects: Physics, Elastic scattering, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, Scattering, chemistry.chemical_element, Particle detector, Charge sharing, Ion, chemistry, Ionization, Atomic physics, Instrumentation, Beam (structure)
Abstract: Tracking with silicon strip detectors for relativistic ions has been investigated using a 12 C beam of 1.5 GeV/ u at GSI. The ionization charge spectrum and the charge sharing between strips are presented. The strip cluster of carbon ion can be selected based on the cluster charge with high efficiency and little contamination. The spatial resolution of the silicon strip detectors is evaluated. The angular distribution of multiple Coulomb scattering was investigated with lead absorbers. The results are compared to the Moliere theory and the Gaussian approximation of GEANT calculations.
Published: 1999

35. Charged particle multiplicity in <tex>e^{+}e_{-}$</tex> → q[L:q] events at 161 and 172 GeV and from the decay of the W boson

Author: D. Bertrand, Jiri Chudoba, W.S.C. Williams, D. Stampfer, Wojciech Kucewicz, J. Yi, U. Mjoernmark, C. Bosio, M. Battaglia, W. Neumann, P. Niss, H. T. Phillips, Vladimir Cindro, Maria Elena Pol, R. Alemany, M. S. Bilenky, Paolo Privitera, M. Mazzucato, J. R. Mahon, S. Katsanevas, D. Y. Bardin, A. Van Lysebetten, Sandor Czellar, E. K. Johansson, Steinar Stapnes, T. A. Filippas, M. Regler, R. Ehret, L.J. Carroll, P.A. Fischer, N. Vassilopoulos, G. Polok, Yu. Gouz, Chiara Mariotti, Ernesto Migliore, P. Seager, V. Malychev, T. Spassov, G. Borisov, M. Baubillier, V. Canale, S. Hahn, Francesca Romana Cavallo, Yu. Sedykh, H. Mueller, G. Grosdidier, D. J. Holthuizen, J. Medbo, Fabio Cossutti, F. Barao, J. E. Augustin, W. Krupinski, P. Rosinsky, P. Abreu, Tord Ekelof, L. Di Ciaccio, N. Neumeister, A. M. Zaitsev, Alexander Vodopyanov, J. Dolbeau, P. Bambade, T. Lesiak, N. N. Khovanski, F. Bianchi, P.S.L. Booth, P. Kubinec, Clara Troncon, K. Muenich, C. De Clercq, R. Moeller, M. Feindt, S. Sánchez Navas, P. Negri, P. Ferrari, P. Sponholz, Göran Jarlskog, T. Wlodek, L. Mundim, A. G. Frodesen, Ch. Jarlskog, W. J. Murray, W. D. Apel, J. M. Lopez, B. Tome, C. Gaspar, J. P. Laugier, Stefano Ragazzi, A. Sheridan, J. D. Durand, A. Tonazzo, R. Strub, Tiziano Rovelli, Winfried Mitaroff, P. Antilogus, F. Simonetto, G. Leder, Wolfgang Adam, L. K. Resvanis, A. Baroncelli, Paulo J. S. Gonçalves, P. Van Dam, A. G. Olshevski, K. D. Brand, N. I. Zimin, Morgan Lethuillier, B. Åsman, D. Fassouliotis, S. Tzamarias, Z. Hajduk, F. Formenti, E. Karvelas, U. Schwickerath, Louis Lyons, V. Lefebure, C. Martinez-Rivero, C. De La Vaissiere, A. Stocchi, Tiziano Camporesi, D. Crennell, F. Mandl, J. Garcia, J. Cuevas Maestro, Maciej Górski, O. Podobrin, J. Masik, G. Cosme, M. Colomer, Massimo Caccia, Yu. Belokopytov, Maria Roberta Monge, A. Zalewska, A. Tilquin, P. J. Holt, I. Stavitski, N. G. Redaelli, Pawel Jalocha, Barry King, W. T. Meyer, B. Bouquet, B. Jean-Marie, J. H. Cowell, Vladimir Nikolaenko, Oxana Smirnova, M. Wielers, Mariusz Witek, E. Spiriti, R. Frühwirth, J. Timmermans, R. Orava, L. Bugge, K. Karafasoulis, A. J. Camacho Rozas, B. D'Almagne, P. V. Chliapnikov, Paul Baillon, Laurent Mirabito, A. Di Diodato, M. Gunther, Marco Bozzo, V. Obraztsov, A. Tomaradze, Rupert Leitner, D. Z. Toet, Alexander Lincoln Read, M. Szeptycka, Marc Besancon, Konstantinos Papageorgiou, Martijn Mulders, O. Klapp, M. L. Turluer, G. Eigen, D. Reid, A. B. Fenyuk, G. Piana, G. Matthiae, G. C. Zucchelli, G. Vegni, Demetrios Loukas, P. B. Renton, P. Bruckman, G. Valenti, F. Waldner, Sandra Amato, I. Lippi, Martino Margoni, E. Fokitis, Borge Svane Nielsen, B. Loerstad, K. Belous, S. De Brabandere, J. H. Wickens, Marco Paganoni, Gianni Zumerle, M. Verlato, C. Walck, R. Reinhardt, T. J. V. Bowcock, Yu.A. Khokhlov, T. L. Hessing, Z. Krumstein, Pierre Juillot, E. Boudinov, R. Janik, F. Tegenfeldt, E. Piotto, Krzysztof Doroba, T. Todorov, S. Paiano, Chiara Meroni, A. De Min, G. Orazi, P. Poropat, C. Weiser, V. Ruhlmann-Kleider, F. Pierre, G. Sajot, A. Onofre, Guy Wilkinson, Ugo Gasparini, Imad Baptiste Laktineh, S. Squarcia, H. Saarikko, P. Gris, Peter Kluit, T. G M Malmgren, H. Wahlen, Andromachi Tsirou, Jelena Krstic, Vincent Hedberg, D. W. Lane, Andre Augustinus, Paolo Morettini, J. G. Loken, A. Grefrath, Andrea Perrotta, P. Beilliere, Juan Fuster, Juergen Thomas, K. A. Drees, E. Cortina, L. Vitale, F. Martinez-Vidal, Antonios Leisos, D. Radojicic, Anna Lipniacka, T. Tabarelli, Georgios Fanourakis, G. Ekspong, O. Solovianov, Krzysztof Nawrocki, J. P. Engel, J. Guy, J. Libby, Ole Røhne, K. H. Becks, M. Pimenta, B. A. Khomenko, S. Stanic, P. N. Ratoff, M. V. Castillo Gimenez, Antonio Ferrer, D. Bertini, G. A. Chelkov, H. Rahmani, S. Todorova, I. A. Tyapkin, M. Begalli, E. Vallazza, S. Hoorelbeke, B. Marechal, Tim Adye, O. Barring, S. Fichet, H. Pernegger, Manfred Krammer, C. Joram, P. Lutz, Francesco Navarria, Ugo Amaldi, Ariella Cattai, Paul Dauncey, N. Demaria, W. De Boer, E. Zevgolatakos, O.M. Kouznetsov, Paolo Ronchese, M. Tyndel, G. D. Alekseev, G. Damgaard, P. Langefeld, A. W. Borgland, F. Ledroit, Jacques Lemonne, R. Henriques, D. Knoblauch, B. Golob, C. Kreuter, P. Buschmann, B. Muryn, R. Mc Kay, Luc Pape, Mario Sannino, M. Mc Cubbin, O. Ullaland, Leif J. Jönsson, N. J. Kjaer, L. Gorn, K. Hultqvist, G. Sciolla, Marta Calvi, Geoffrey Smith, Rafael Marco, V. Lepeltier, Josef Strauss, V. Chabaud, M. Espirito Santo, Theodora Papadopoulou, Andrei Nomerotski, O. Yushchenko, K. Rybicki, R. Sekulin, R. Keranen, Philippe Charpentier, Francisco Matorras, B. Franek, V. Gracco, D. Souza-Santos, M. Barbi, D. Vilanova, I. V. Ajinenko, M. Berggren, Richard Brenner, J. J. Hernandez, P. Delpierre, Paolo Checchia, J. P. Gerber, F. Fulda-Quenzer, T. Moa, G. Maehlum, W. Venus, G. Myatt, Robert S. Brown, A. Trombini, Ph. Gavillet, M. Kaiser, F. Zach, S. S. Meyer, A. Markou, Stanislav Nemecek, N. Pukhaeva, J. Dahm, M. A. Winter, Richard Jacobsson, A. Petrolini, B. De Lotto, G. Crosetti, Evgueni Vlasov, R. Nicolaidou, G. Mc Pherson, H. Herr, L. G. Tkatchev, T. Podobnik, A. Seitz, J. Baudot, A. Nygren, Matteo Pegoraro, Patrick Jarry, G. Rinaudo, I. Kronkvist, J. MacNaughton, G. Barker, R. Silvestre, Klaus Moenig, Fabrizio Parodi, E. Graziani, L. Serbelloni, J. M. Brunet, E. I. Rosenberg, K. Kurvinen, D. Wicke, C. Green, G. Tristram, G. W. Van Apeldoorn, A. N. Sisakian, M. A. Houlden, H. Foeth, S. Marti i Garcia, Claire Bourdarios, M. Nieuwenhuizen, A. Sadovsky, Piotr Zalewski, L. Ventura, K. Yip, B. Ueberschaer, Denis Gelé, Lydia Roos, M. Michelotto, J. W. Lamsa, M. Blume, A. De Angelis, J. Drees, P. Andersson, W. Da Silva, A. Deghorain, S. Ortuno, P. Collins, Maurizio Canepa, E. Higon, J. P. Tavernet, Evangelos Gazis, Daniel Bloch, V.A. Uvarov, F. Scuri, Ahmimed Ouraou, F. Richard, P. Chochula, C. Matteuzzi, Christine Kourkoumelis, A. M. Wetherell, L. Lanceri, L.N. Gerdyukov, U. Parzefall, A. Firestone, L. Chaussard, A. Passeri, T. Buran, Markus Elsing, J. N. Jackson, H. Palka, Corinne Berat, Olga Botner, S. Almehed, R. Chierici, F. Hahn, G. Transtromer, Carmen García, Reynald Pain, P. Kokkinias, C. K. Legan, Y. Sacquin, A. Djannati, Kathy Huet, Valeriy Pozdniakov, R. Mc Nulty, Attilio Andreazza, T. Brenke, Per Jönsson, Pierre Billoir, G. Smadja, J. Van Eldik, W. Bonivento, K. Grzelak, V. Chorowicz, Allan Hallgren, Marcos Dracos, Vaclav Vrba, Hans Dijkstra, C. Caso, R. Lauhakangas, H. B. Crawley, Danilo Zavrtanik, K. Stevenson, T. Myklebust, P. Herquet, R. Contri, T. Burgsmueller, Manolis Dris, P. Roudeau, Alberto Benvenuti, Phillip Allport, G. Della Ricca, P. Rebecchi, José Salt, Amelia Maio, Cristian Stanescu, P. Branchini, H. Schneider, Klaus Hamacher, J. M. Heuser, M. Nikolenko, M. J. Bates, M. Bonesini, Toralf Bernhard Skaali, D. Gamba, F. Verbeure, Dietrich Liko, Chariclia Petridou, M. Reale, Daniel Treille, M. Bigi, J. Ridky, C. Parkes, Pascal Paganini, Nikita Smirnov, F. Carena, B. Stugu, M. Gandelman, S. Cabrera, M. Pernicka, Jesus Marco, G. Lenzen, V. Kostioukhine, M. Koratzinos, D. Edsall, K. Korcyl, Luis Peralta, F. Kapusta, Alessandra Romero, A. Ruiz, M. A. Bizouard, A. Pullia, M. A E Schyns, P. Siegrist, M. Chen, J-C. Marin, B. Erzen, R. Gokieli, O. Tchikilev, Marek Szczekowski, H. Klein, M. Davenport, K. Osterberg, A. Galloni, S. O. Holmgren, L. S. Vertogradov, A. Normand, L. Tortora, F. J. Harris, F. Terranova, Carlos Lacasta, W. Oberschulte-Beckmann, Y. Arnoud, R. C. Shellard, Josef Hrubec, R. Sosnowski, P. Vincent, F. Naraghi, A. M. Segar, E. C. Katsoufis, G. Gopal, Maarten Boonekamp, L. De Paula, F. Fontanelli, and E. Falk
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Multiplicity (mathematics), Parton, Charge (physics), 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: The data collected by DELPHI in 1996 have been used to measure the average charged particle multiplicities and dispersions in $q\bar{q}$ events at centre-of-mass energies of $\sqrt{s}=161$~GeV and $\sqrt{s}=172$~GeV, and the average charge multiplicity in WW events at $\sqrt{s}=172$~GeV. The multiplicities in $q\bar{q}$ events are consistent with the evolution predicted by QCD. The dispersions in the multiplicity distributions are consistent with Koba-Nielsen-Olesen (KNO) scaling. The average multiplicity of charged particles in hadronic W decays has been measured for the first time; its value, $19.23 \pm 0.74 (stat+syst)$, is consistent with that expected for an $e^+e^-$ interaction at a centre-of-mass energy equal to the W mass. The charged particle multiplicity in W decays shows no evidence of effects of colour reconnection between partons from different W's at the present level of statistics.
Published: 1998

36. Rapidity correlations in Lambda baryon and proton production in hadronic Z0 decays

Author: A. Firestone, H. Palka, J. Yi, M. Battaglia, W. Neumann, C. Caso, A. Van Lysebetten, B. Dalmagne, Sandor Czellar, T. Brenke, Oxana Smirnova, M. Wielers, K. Karafasoulis, G. Polok, K. Grzelak, H. B. Crawley, F. Barao, Yu. Gouz, Ernesto Migliore, Allan Hallgren, A. Di Diodato, M. L. Turluer, D. Reid, Piotr Zalewski, Gianni Zumerle, M. A. Bizouard, G. Borisov, M. Baubillier, V. Canale, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, D. Fassouliotis, J. Cuevas Maestro, F. Carena, P. Poropat, Andromachi Tsirou, Andre Augustinus, L. Tortora, F. J. Harris, M. Verlato, F. Terranova, V.A. Uvarov, P. Siegrist, J-C. Marin, B. Erzen, R. Gokieli, P. Kubinec, Luis Peralta, F. Kapusta, A. Pullia, W. Da Silva, Carlos Lacasta, Clara Troncon, C. Kreuter, P. Buschmann, B. Muryn, R. Mc Kay, J. H. Cowell, Phillip Allport, P. Gunnarsson, F. Richard, P. Chochula, C. Matteuzzi, G. Della Ricca, J. N. Jackson, P. Kokkinias, M. Chen, S. Almehed, R. Chierici, F. Hahn, S. Hoorelbeke, Paolo Ronchese, S. Cabrera, C. K. Legan, Tord Ekelof, D. J. Holthuizen, A. Passeri, M. Davenport, I. A. Tyapkin, D. Edsall, K. Muenich, Winfried Mitaroff, G. Grosdidier, K. Korcyl, P. Abreu, Attilio Andreazza, D. Bertrand, Jiri Chudoba, Marek Szczekowski, W. Ruckstuhl, D. Stampfer, K. D. Brand, N. I. Zimin, R. Keranen, H. J. Hilke, Antonio Ferrer, D. Bertini, N. J. Kjaer, Alessandra Romero, Philippe Charpentier, Francisco Matorras, D. Souza-Santos, A. Ruiz, E. Tcherniaev, J. P. Engel, P. Bambade, M. V. Castillo Gimenez, Louis Lyons, Pierre Billoir, José Salt, H. Klein, M. A E Schyns, S. Todorova, E. K. Johansson, Stefano Ragazzi, I. V. Ajinenko, M. Pernicka, Amelia Maio, R. Mc Nulty, Pierre Juillot, E. Boudinov, A. Galloni, B. Bouquet, K. Osterberg, Paul Dauncey, N. Demaria, G. Damgaard, T. J. V. Bowcock, T. Wlodek, B. Loerstad, Steinar Stapnes, Cristian Stanescu, P. Branchini, C. Green, G. Tristram, Jesus Marco, G. Lenzen, T. L. Hessing, V. Kostioukhine, M. Koratzinos, S. O. Holmgren, B. Koene, B. Golob, G. Smadja, J. Van Eldik, L. S. Vertogradov, R. Orava, Sandra Amato, H. Schneider, N. Vassilopoulos, R. Henriques, Wolfgang Adam, F. Fulda-Quenzer, A. Onofre, V. Gracco, M. Berggren, V. Chorowicz, W. Oberschulte-Beckmann, Vaclav Vrba, G. Eigen, Demetrios Loukas, P. Rebecchi, T. Podobnik, K. Belous, F. Formenti, F. Cao, I. Bozovic, T. G M Malmgren, R. Lauhakangas, H. Wahlen, J. M. Lopez, Hans Dijkstra, J. W. Lamsa, A. Trombini, Paolo Morettini, J. G. Loken, A. Grefrath, P. Beilliere, R. C. Shellard, Josef Hrubec, Dietrich Liko, E. Graziani, J. M. Brunet, H. Foeth, R. Silvestre, R. Sosnowski, Maria Elena Pol, Imad Baptiste Laktineh, S. Katsanevas, J. Libby, S. Squarcia, P. Bruckman, H. Saarikko, Y. Sacquin, M. Pimenta, D. Y. Bardin, G. Valenti, V. Malychev, M. Blume, P. Vincent, P. Pages, F. Naraghi, A. Deghorain, P. Jalocha, A. Djannati, B. A. Khomenko, C. Gaspar, Yu. Belokopytov, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, S. Marti i Garcia, Robert S. Brown, A. M. Segar, Kathy Huet, B. Ueberschaer, Juan Fuster, Valeriy Pozdniakov, G. W. Van Apeldoorn, M. Karlsson, T. A. Filippas, T. Tabarelli, A. Stocchi, Francesco Navarria, K. H. Becks, E. Vallazza, E. Higon, F. Pierre, I. Stavitski, P. Langefeld, G. C. Zucchelli, L. Bugge, A. J. Camacho Rozas, Mariusz Witek, M. Gunther, Krzysztof Nawrocki, Chariclia Petridou, F. Fontanelli, L. Ventura, K. Yip, Per Jönsson, A. Miagkov, A. De Angelis, E. C. Katsoufis, G. Gopal, M. Regler, H. Rahmani, J. Baudot, R. Lindner, Maurizio Canepa, Ariella Cattai, R. Ehret, Vincent Hedberg, J. E. Augustin, W. Krupinski, L. Gorn, F. Scuri, Danilo Zavrtanik, D. Z. Toet, Paul Baillon, D. Zontar, Alexander Lincoln Read, D. W. Lane, M. Szeptycka, Marc Besancon, Konstantinos Papageorgiou, A. M. Wetherell, Rupert Leitner, G. Piana, V. Lepeltier, W. Bonivento, G. Matthiae, O. Barring, A. Baroncelli, Paulo J. S. Gonçalves, L. De Paula, Daniel Bloch, E. Falk, Matteo Pegoraro, P. Roudeau, F. Ledroit, Jacques Lemonne, Kerem Cankocak, Ahmimed Ouraou, P. Collins, O. Podobrin, Paolo Checchia, Ph. Gavillet, M. Kaiser, P. Van Dam, Branislav Sitar, M. Reale, Daniel Treille, J. D. Durand, O. Ullaland, Leif J. Jönsson, Marcos Dracos, Yu. Sedykh, H. Mueller, G. Ekspong, P. N. Ratoff, B. Tome, P. Antilogus, L. Lanceri, R. Janik, K. Stevenson, O. Sahr, A. Tomaradze, J. MacNaughton, G. Barker, Martijn Mulders, V. Ruhlmann-Kleider, C. De La Vaissiere, Patrick Jarry, G. Rinaudo, Claire Bourdarios, M. Nieuwenhuizen, M. J. Bates, M. Bonesini, Lydia Roos, Toralf Bernhard Skaali, L.N. Gerdyukov, J. Drees, D. Gamba, Andrei Nomerotski, O. Klapp, O. Kouznetsov, M. Begalli, A. Tonazzo, P. Herquet, A. G. Olshevski, M. Merk, R. Contri, Guy Wilkinson, Borge Svane Nielsen, S. De Brabandere, C. Martinez-Rivero, Juergen Thomas, A. Tilquin, Christine Kourkoumelis, M. Bigi, J. Ridky, T. Buran, Markus Elsing, F. Verbeure, Krzysztof Doroba, Chiara Meroni, T. Burgsmueller, Martino Margoni, Andrea Perrotta, J. P. Tavernet, Barry King, Evangelos Gazis, E. Spiriti, U. Schwickerath, B. Franek, J. Dolbeau, Peter Kluit, E. Fokitis, P.S.L. Booth, U. Mjoernmark, C. Bosio, Manolis Dris, Klaus Hamacher, S. Gumenyuk, R. Frühwirth, J. Timmermans, C. Parkes, B. Stugu, M. Gandelman, Olga Botner, L. Serbelloni, H. T. Phillips, Vladimir Cindro, G. D. Alekseev, P. B. Renton, S. Fichet, Maria Roberta Monge, M. Tyndel, G. Transtromer, E. I. Rosenberg, Carmen García, P. Seager, B. Jean-Marie, Mario Sannino, Alberto Benvenuti, D. Knoblauch, Nikita Smirnov, J. M. Heuser, Reynald Pain, L. Di Ciaccio, K. Kurvinen, N. N. Khovanski, A. Zalewska, M. Mc Cubbin, W. T. Meyer, D. Wicke, Theodora Papadopoulou, B. Marechal, Tiziano Camporesi, J. P. Laugier, L. Chaussard, K. Hultqvist, Rafael Marco, M. Feindt, S. Sánchez Navas, P. Negri, P. Ferrari, P. J. Holt, N. G. Redaelli, Marco Bozzo, P. Paganini, M. Nikolenko, Mogens Dam, Marta Calvi, Geoffrey Smith, F. Waldner, P. Sponholz, Göran Jarlskog, C. Walck, R. Reinhardt, Yu.A. Khokhlov, A. Normand, L. Mundim, C. Weiser, Ch. Jarlskog, Chiara Mariotti, W. D. Apel, S. Hahn, Francesca Romana Cavallo, N. Neumeister, V. V. Lapin, C. De Clercq, W. J. Murray, R. Strub, A. N. Sisakian, A. Sadovsky, G. Cosme, D. Vilanova, G. Vegni, Laurent Mirabito, Denis Gelé, M. Michelotto, A. G. Frodesen, G. Orazi, S. Tzamarias, Z. Hajduk, Maciej Górski, Ugo Gasparini, P. V. Chliapnikov, W.S.C. Williams, K. A. Drees, P. Niss, R. Alemany, Paolo Privitera, M. Mazzucato, J. R. Mahon, J. Guy, S. Stanic, Tim Adye, Josef Strauss, V. Chabaud, M. Espirito Santo, W. Venus, R. Nicolaidou, I. Kronkvist, G. A. Chelkov, Ugo Amaldi, W. De Boer, E. Zevgolatakos, A. W. Borgland, G. Sciolla, Richard Brenner, F. Simonetto, J. P. Gerber, B. Åsman, V. Lefebure, D. Crennell, F. Zach, F. Mandl, S. S. Meyer, Stanislav Nemecek, N. Pukhaeva, J. Dahm, J. Garcia, V. Obraztsov, F. Tegenfeldt, I. Lippi, T. Todorov, I. Roncagliolo, J. H. Wickens, P. Gris, Marco Paganoni, E. Cortina, L. Vitale, F. Martinez-Vidal, Antonios Leisos, D. Radojicic, Georgios Fanourakis, H. Pernegger, Manfred Krammer, P. Lutz, M. L. Andrieux, Wojciech Kucewicz, M. S. Bilenky, L.J. Carroll, P.A. Fischer, J. Medbo, Fabio Cossutti, P. Weilhammer, T. Lesiak, Tiziano Rovelli, J. Masik, Luc Pape, O. Yushchenko, K. Rybicki, R. Sekulin, J. J. Hernandez, T. Moa, G. Maehlum, A. Markou, J.D. Richardson, M. A. Winter, Richard Jacobsson, A. Petrolini, B. De Lotto, G. Crosetti, Evgueni Vlasov, H. Herr, L. G. Tkatchev, A. Seitz, R. Moeller, L. K. Resvanis, Massimo Caccia, Vladimir Nikolaenko, M. Barbi, P. Delpierre, G. Myatt, Z. Krumstein, A. De Min, G. Sajot, Anna Lipniacka, C. Joram, C. Bricman, UCL - SST/IRMP - Institut de recherche en mathématique et physique, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Delphi (IHEF, IoP, FNWI), Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: IMAGING CHERENKOV DETECTOR, DELPHI, Particle physics, Nuclear and High Energy Physics, Meson, Electron–positron annihilation, Hadron, Nuclear Theory, Strangeness, Lambda, Lambda baryon, 01 natural sciences, Partícules (Física nuclear), Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, LARGE ELECTRON POSITRON COLLIDER, Large Electron–Positron Collider, PARTICLE PHYSICS, Physics::Accelerator Physics, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: In an analysis of multihadronic events recorded at LEP by DELPHI in the years 1992 through 1994, charged hadrons are identified using the measurement of their energy loss and their Cherenkov angle. Rapidity correlations of \La-\La, proton-proton, and \La-proton pairs are compared. The agreement with the string and cluster fragmentation models is tested. For those pairs that frame a meson in terms of rapidity the compensation of strangeness is studied. For \La{}$\overline{\mathrm{p}}$ pairs the additional correlation with respect to charged kaons is analysed.
Published: 1998

37. Commissioning of the DELPHI pixel detector

Author: Massimo Caccia, Chiara Meroni, C Troncon, H. Leb, Klaus Mönig, K. W. Glitza, Markus Elsing, P. Gerlach, D. Knoblauch, D. Sauvage, G. Vegni, Susanne Kersten, M. Kaiser, T. Mouthuy, J.J. Jaeger, G. Maehlum, N. Demaria, B. Uberschar, G. Tristram, F. Ledroit, Frank Hartmann, B. Courty, W. De Boer, M. Raymond, J. M. Brunet, P. Delpierre, I. M. Gregor, M. Cohen-Solal, J.C. Clemens, Lydia Roos, J. Drees, S. Heising, M. Wielers, G Guglielmi, J. M. Heuser, J.P. Turlot, K. H. Becks, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: Physics, Masking (art), Nuclear and High Energy Physics, Pixel, 010308 nuclear & particles physics, business.industry, Track (disk drive), Detector, Binary number, 01 natural sciences, Optics, 0103 physical sciences, Pattern recognition (psychology), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, business, Instrumentation, computer, Delphi, computer.programming_language, Pixel detector
Abstract: The DELPHI Vertex Detector has been upgraded for LEP200 with 2 layers of pixel detectors and 2 layers of ministrips as endcaps, thus covering the polar angular range between 10° and 21° and allowing for standalone pattern recognition. During the 1995/96 shutdown the first 95 modules were installed and the installation was completed in May 97 with all 152 modules. Production yields and failures during the assembly will be presented. The detector operated at a threshold of around 9000 electrons resulting in a number of noisy pixels at the 10 −3 level. After masking these hot pixels in the readout, the remaining number of random hits per event is at the 10 −6 level. The observed resolution of about 100 μm is close to the expectation for binary readout. The track reconstruction efficiency increased by more than 100% in the central part of the forward tracker.
Published: 1997

38. Measurement of the spin density matrix for the rho(0), K*(0)(892) and phi produced in Z(0) decays

Author: H. Foeth, R. Alemany, T. Tabarelli, S. Amato, B. Ueberschaer, P. Rebecchi, H. Rahmani, G. Rinaudo, G. Myatt, A. De Angelis, E. K. Johansson, Steinar Stapnes, M. Gorski, P. Collins, G. D. Alekseev, Ariella Cattai, F. Ledroit, O. Barring, A. Firestone, Daniel Bloch, Kirsten Drees, N. Vassilopoulos, F. Tegenfeldt, Andrei Nomerotski, P. Abreu, Ahmimed Ouraou, Norbert Neumeister, Dietrich Liko, P. Privitera, Imad Baptiste Laktineh, D. Y. Bardin, H. Saarikko, D. J. Holthuizen, M. Mc Cubbin, Robert S. Brown, K. Hultqvist, Rafael Marco, W. D. Apel, B. Franek, L.N. Gerdyukov, P. Siegrist, P. Kokkinias, A. W. Borgland, A. Miagkov, J. Baudot, P. Delpierre, O. Podobrin, M. E. Pol, D. Gamba, B. Dalmagne, B. Golob, V. Malychev, K. Grzelak, F. Naraghi, Z. Krumstein, T. Buran, Markus Elsing, Matteo Pegoraro, A. De Min, T. Brenke, K. Korcyl, R. Lauhakangas, Ph. Charpentier, A. Ferrer, J. Salt, P. Vincent, Daniel Treille, M. Barbi, E. Falk, Patrick Jarry, Wolfgang Adam, D. Knoblauch, A. G. Frodesen, E. Zevgolatakos, Klaus Hamacher, S. Marti i Garcia, D. Edsall, K. Karafasoulis, J. Masik, R. Chierici, G. Wilkinson, J. Ridky, A.N. Sisakian, L. de Paula, S. Tzamarias, C. Parkes, R. Contri, Mario Sannino, Corinne Berat, J. M. Lopez, A. Ruiz, Yu. Belokopytov, G. Fanourakis, J. Fuster, Pierre Juillot, A. Di Diodato, M. L. Turluer, D. Reid, M. A E Schyns, K. Nawrocki, P. Antilogus, E. Boudinov, P. Kubinec, Lydia Roos, Josef Strauss, C. Joram, J. Drees, V. Chabaud, M. Espirito Santo, W. Venus, Nikita Smirnov, G. Transtromer, J. Krstic, R. Orava, A. Passeri, W. Krupinski, D. Vilanova, T. J. V. Bowcock, A. Trombini, T. L. Hessing, B. De Lotto, M. Pimenta, M. V. Castillo Gimenez, P. Poropat, F. Martinez-Vidal, L. Serbelloni, Gianni Zumerle, H. Palka, F. Fulda-Quenzer, I. Stavitski, C. Weiser, V. Gracco, D. Zavrtanik, A. Onofre, A. Galloni, S. O. Holmgren, G. Eigen, G. Piana, Clara Troncon, M. Bigi, Evangelos Gazis, O. Botner, R. Moeller, P. Bruckman, A. Seitz, M. Feindt, F. Pierre, Mogens Dam, Alexander Lincoln Read, C. Petridou, Paolo Morettini, Marc Besancon, K. Stevenson, G. Valenti, Rupert Leitner, G. Matthiae, M. Kaiser, P. Negri, P. Ferrari, L. S. Vertogradov, P. Seager, P. Rosinsky, S. Navas, C. Garcia, A. Sadovsky, L. K. Resvanis, Luc Pape, Anna Lipniacka, K. Rybicki, Andromachi Tsirou, P. Bambade, Z. Hajduk, P. Buschmann, R. Mc Kay, L. Di Ciaccio, Josef Hrubec, A. Andreazza, Massimo Caccia, M. Gandelman, J. Dolbeau, Stefano Ragazzi, D. W. Lane, J. G. Loken, A. Grefrath, P. Beilliere, Manfred Krammer, Denis Gelé, T. Rovelli, P. V. Chliapnikov, W.S.C. Williams, Vladimir Nikolaenko, Chiara Mariotti, E. I. Rosenberg, L. M. Mundim, K. Kurvinen, D. Wicke, C. Martinez-Rivero, M. Michelotto, O. Smirnova, S. Hoorelbeke, Paolo Ronchese, N. J. Kjaer, T. Myklebust, P. Herquet, F. Barao, Andre Augustinus, J. P. Tavernet, A. Perrotta, G. Borisov, M. Baubillier, J. J. Hernandez, R. Gokieli, V. Ruhlmann-Kleider, R. Janik, P.S.L. Booth, C. De La Vaissiere, Fabrizio Parodi, K. D. Brand, T. Burgsmueller, N. I. Zimin, V. Hedberg, P. Goncalves, P. Sponholz, Ch. Jarlskog, A. M. Segar, M. A. Winter, G. Crosetti, Evgueni Vlasov, F. Scuri, G. Ekspong, M. Verlato, C. Green, G. Tristram, A. Stocchi, L. Tortora, Manolis Dris, D. Bertini, R. Jacobsson, F. J. Harris, S. Todorova, A. M. Zaitsev, Alexander Vodopyanov, R. Keranen, Francisco Matorras, T. Ekelof, S. Meyer, Charles Bricman, M. R. Monge, J. D. Durand, C. Kreuter, V. Chorowicz, F. Terranova, J. H. Cowell, P. P. Allport, K. Papageorgiou, A. Tonazzo, A. Baroncelli, Ulrich Parzefall, J. Van Eldik, Heinz Pernegger, K. Doroba, L. Bugge, A. G. Olshevski, L. Chaussard, P. Van Dam, M. Bozzo, F. Formenti, F. Cao, V.A. Uvarov, G. Mc Pherson, V. Lepeltier, A. Sheridan, M. Reale, L. G. Tkatchev, J. Garcia, G. Sciolla, W. Da Silva, F. R. Cavallo, W. Kucewicz, S. Hahn, F. Carena, A. Tilquin, W. A. Mitaroff, J. M. Heuser, J. Yi, J. W. Lamsa, A. J. Camacho Rozas, E. Graziani, Y. Arnoud, M. Blume, I. A. Tyapkin, R. Henriques, V. Obraztsov, U. Schwickerath, L. Jonsson, P. Niss, D. Z. Toet, B. Bouquet, J. M. Brunet, A. Deghorain, W. Neumann, A. Markou, W. De Boer, J. Cuevas Maestro, T. Todorov, M. Davenport, Th. D. Papadopoulou, B. Muryn, P. Gris, T. G M Malmgren, H. Wahlen, G. Polok, D. Fassouliotis, M. Pernicka, C. Caso, A. Petrolini, A. Van Lysebetten, Sandor Czellar, A. Zalewska, Martijn Mulders, M. Mazzucato, R. C. Shellard, D. Bertrand, Jiri Chudoba, E. Vallazza, P. Chochula, Ugo Amaldi, H. Mueller, W. T. Meyer, D. Loukas, F. L. Navarria, O. Yushchenko, W. Oberschulte-Beckmann, Jesus Marco, G. Lenzen, P. Zalewski, M. Begalli, V. Kostioukhine, M. Koratzinos, M. Nikolenko, S. Katsanevas, M. Wielers, R. Sekulin, A. M. Wetherell, I. Kronkvist, Yu. Gouz, G. Sajot, Martino Margoni, Jacques Lemonne, K. H. Becks, M. Battaglia, E. Fokitis, P. Jonsson, G. Gopal, C. Matteuzzi, C. De Clercq, R. A. Brenner, J. N. Jackson, O. Kouznetsov, G. Cosme, A. C. Benvenuti, T. A. Filippas, D. Stampfer, P. B. Renton, F. Cossutti, J. P. Gerber, S. Squarcia, G. Vegni, G. Barbiellini, M. Regler, W. J. Murray, Pawel Jalocha, Barry King, E. Spiriti, T. Moa, Cristian Stanescu, P. Branchini, Laurent Mirabito, H. Schneider, Juergen Thomas, Paul Baillon, F. Zach, G. Jarlskog, S. Fichet, G. Orazi, J. C. Marin, E. Migliore, H. Herr, Stanislav Nemecek, M. Szeptycka, J. Medbo, N. Pukhaeva, M. Witek, F. Hahn, R. Frühwirth, J. Timmermans, J. Dahm, R. Strub, E. C. Katsoufis, Amiran Tomaradze, Y. Sacquin, Rosy Nicolaidou, Yu. Sedykh, Ugo Gasparini, A. Djannati, O. Ullaland, Marta Calvi, M. A. Bizouard, Kathy Huet, Valeriy Pozdniakov, Vincenzo Canale, Geoffrey Smith, F. Richard, M. J. Bates, K. Muenich, T. Podobnik, G. Della Ricca, G. W. Van Apeldoorn, O. Solovianov, C. K. Legan, M. Bonesini, W. Bonivento, L. Ventura, K. Yip, J. Guy, Louis Lyons, C. Gaspar, Toralf Bernhard Skaali, P. Andersson, P. Roudeau, A. Sokolov, Marcos Dracos, Tim Adye, F. Verbeure, B. Marechal, R. Mc Nulty, J. R. Mahon, B. Stugu, Christine Kourkoumelis, J. P. Engel, Carlos Lacasta, M. Tyndel, S. Stanic, A. B. Fenyuk, G. C. Zucchelli, A. Pullia, G. J. Barker, Mingshui Chen, G. Grosdidier, G. A. Chelkov, T. Wlodek, R. Ehret, Paul Dauncey, N. Demaria, P. Paganini, G. Damgaard, H. Klein, A. Hallgren, Tiziano Camporesi, K. Osterberg, P. J. Holt, N. G. Redaelli, F. Bianchi, Paolo Checchia, Ph. Gavillet, L. Lanceri, C. Walck, R. Reinhardt, Yu.A. Khokhlov, S. Cabrera, J. MacNaughton, A. Normand, M. Szczekowski, M. Nieuwenhuizen, Flavio Fontanelli, B. Erzen, R. Silvestre, M. Canepa, U. Mjoernmark, Pierre Billoir, Klaus Moenig, M. A. Houlden, A. Romero, T. Spassov, J. E. Augustin, M. Berggren, E. Higon, M. Chapkin, Vaclav Vrba, Hans Dijkstra, H. B. Crawley, C. Bosio, A. Nygren, H. T. Phillips, Vladimir Cindro, S. Almehed, L. Peralta, R. Sosnowski, B. Loerstad, N. N. Khovanski, R. Pain, J. P. Laugier, J. Libby, Ole Røhne, B. A. Khomenko, P. Langefeld, L. Gorn, C. Bourdarios, A. Leisos, G. Maehlum, M. Gunther, O. Klapp, Borge Svane Nielsen, S. De Brabandere, Chiara Meroni, A. Maio, Peter Kluit, M. S. Bilenky, L.J. Carroll, P. N. Ratoff, P.A. Fischer, T. Lesiak, F. Simonetto, F. Kapusta, G. Leder, B. Åsman, V. Lefebure, D. Crennell, F. Mandl, G. Smadja, E. Cortina, B. Jean-Marie, I. Lippi, L. Vitale, J. H. Wickens, Marco Paganoni, D. Radojicic, D. Souza-Santos, P. Lutz, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, LEP (IHEF, IoP, FNWI), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), UCL - SC/PHYS - Département de physique, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, Meson, Electron–positron annihilation, D-STAR, Hadron, ANNIHILATIONS, Partícules (Física nuclear), QUARK FRAGMENTATION, HADRONS, MESONS, Nuclear physics, Angular distribution, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Matrix element, Spin density, Detectors de radiació, DELPHI, Physics, LARGE ELECTRON POSITRON COLLIDER, PARTICLE PHYSICS, Mass spectrum, Atomic physics, Particle Physics - Experiment
Abstract: The spin density matrix elements for the rho(0), K-*0(892) and phi produced in hadronic Z(0) decays are measured in the DELPHI detector. There is no evidence for spin alignment of the K-*0(892) and phi, in the region x(p) less than or equal to 0.3 (x(p) = p/p(beam)), where rho(00) = 0.33 +/- 0.05 and rho(00) = 0.30 +/- 0.04, respectively. In the fragmentation region, x(p) greater than or equal to 0.4, there is some indication for spin alignment of the rho(0) and K-*0(892), since rho(00) = 0.43 +/- 0.05 and rho(00) = 0.46 +/- 0.08, respectively. These values are compared with those found in meson-induced hadronic reactions. For the phi, rho(00) = 0.30 +/- 0.04 for x(p) greater than or equal to 0.4 and 0.55 +/- 0.10 for x(p) greater than or equal to 0.7. The off-diagonal spin density matrix element rho(1-1) is consistent with zero in all cases. (C) 1997 Published by Elsevier Science B.V.
Published: 1997

39. First results from the DELPHI pixel detector

Author: G. Tristram, F. Ledroit, B. Uberschar, Frank Hartmann, J.P. Turlot, N. Demaria, Markus Elsing, Chiara Meroni, G. Vegni, W. deBoer, Klaus Mönig, J. Masik, D. Sauvage, Vaclav Vrba, P. Gerlach, L. Guglielmi, H. Leb, M. Wielers, J. M. Heuser, D. Knoblauch, G. Maehlum, J. Ridky, Susanne Kersten, K. W. Glitza, J. M. Brunet, P. Delpierre, Lydia Roos, S. S. Meyer, T. Mouthuy, J. Drees, M. Cohen-Solal, I. M. Gregor, M. Kaiser, J.C. Clemens, B. Courty, Petr Sicho, Clara Troncon, K. H. Becks, M. Raymond, Massimo Caccia, J.J. Jaeger, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Pixel, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Optics, Computer Science::Computer Vision and Pattern Recognition, Computer Science::Multimedia, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, business, Instrumentation, computer, Delphi, Pixel detector, computer.programming_language
Abstract: In 1996 the DELPHI experiment at LEP has upgraded its silicon tracker. In the forward region, pixel detectors were installed. The pixel commissioning and the first results are reported.
Published: 1997

40. Measurement of the multiplicity of gluons splitting to bottom quark pairs in hadronic Z0 decays

Author: L. S. Vertogradov, Z. Hajduk, M. Gunther, Rupert Leitner, G. Matthiae, M. Kaiser, L. Di Ciaccio, R. Janik, A. M. Segar, K. Muenich, G. D. Alekseev, W. Adam, Louis Lyons, Tord Ekelof, T. G M Malmgren, H. Wahlen, P. Delpierre, G. A. Chelkov, O. Podobrin, M. Feindt, Klaus Hamacher, S. Gumenyuk, B. Sitar, J. M. Heuser, P. Siegrist, L. Tortora, F. J. Harris, K. H. Becks, F. Terranova, E. Vallazza, F. Mandl, Mogens Dam, R. Gokieli, P. Negri, P. Ferrari, Carlos Lacasta, O. Tchikilev, Phillip Allport, J. Yi, Y. Sacquin, A. Djannati, Kathy Huet, Valeriy Pozdniakov, A. Sadovsky, B. Muryn, W. Neumann, A. Baroncelli, G. Della Ricca, K. Rybicki, E. Higon, R. Sosnowski, S. Amato, P. Sponholz, G. W. Van Apeldoorn, L. Ventura, K. Yip, P. Van Dam, Robert S. Brown, W. Bonivento, P. Roudeau, Denis Gelé, D. J. Holthuizen, F. Naraghi, W.S.C. Williams, P. Bambade, P. Buschmann, R. Mc Kay, A. Markou, D. Knoblauch, A. Van Lysebetten, Sandor Czellar, S. Tzamarias, Th. D. Papadopoulou, Ch. Jarlskog, A. Andreazza, M. Mc Cubbin, M. Gandelman, I. Kronkvist, R. Keranen, Francisco Matorras, J. Krstic, V. Chorowicz, Yu. Gouz, F. L. Navarria, G. Sajot, Ernesto Migliore, M. Barbi, J. Baudot, P. Vincent, A. Sokolov, Marcos Dracos, A. Seitz, Lydia Roos, J. Drees, F. Pierre, M. Michelotto, M. Regler, M. Novak, E. Falk, Yu. Belokopytov, Piotr Zalewski, S. Marti i Garcia, K. Hultqvist, D. Edsall, Rafael Marco, P. Andersson, D. W. Lane, L. de Paula, J. MacNaughton, Alessandra Romero, A. Ruiz, M. A E Schyns, B. Marechal, Evangelos Gazis, P. Antilogus, G. Ekspong, G. Wilkinson, J. M. Lopez, Mario Sannino, F. R. Cavallo, C. Kreuter, G. Piana, M. Berggren, F. Fulda-Quenzer, Matteo Pegoraro, Pawel Jalocha, Barry King, P. Niss, M. Mazzucato, E. Spiriti, I. Stavitski, C. Weiser, Alexander Lincoln Read, M. Szeptycka, Marc Besancon, E. Graziani, J. M. Brunet, F. Carena, H. Foeth, A.N. Sisakian, J. H. Cowell, V. Chabaud, J. R. Mahon, M. Espirito Santo, W. Venus, M. Verlato, A. G. Frodesen, J. Timmermans, Patrick Jarry, H. Palka, V. Gracco, D. Zavrtanik, G. Rinaudo, I. A. Tyapkin, R. A. Brenner, R. Alemany, W. A. Mitaroff, R. Orava, B. Ueberschaer, A. Stocchi, M. Bozzo, Christine Kourkoumelis, D. Bertini, T. J. V. Bowcock, S. Todorova, I. V. Ajinenko, T. L. Hessing, M. Nikolenko, S. Navas, D. Vilanova, B. Tome, M. Pimenta, Maciej Górski, A. De Angelis, P. Collins, H. Schneider, Pierre Juillot, E. Boudinov, P. Kubinec, G. Eigen, Jesus Marco, G. Lenzen, Daniel Bloch, G. Orazi, Ahmimed Ouraou, P. Seager, H. Herr, V. Kostioukhine, M. Koratzinos, T. Rovelli, L. Serbelloni, M. Wielers, Ugo Gasparini, M. A. Bizouard, P. V. Chliapnikov, V.A. Uvarov, Paolo Morettini, E. I. Rosenberg, L. M. Mundim, J. G. Loken, Cristian Stanescu, P. Branchini, K. A. Drees, L.N. Gerdyukov, J. D. Durand, P. B. Renton, A. Grefrath, P. Beilliere, O. Solovianov, Guido Barbiellini, J. Guy, K. Papageorgiou, A. Tonazzo, A. G. Olshevski, L. Chaussard, S. Katsanevas, R. Fruhwirth, G. Vegni, B. Dalmagne, K. Kurvinen, D. Wicke, M. Karlsson, C. Martinez-Rivero, R. Mc Nulty, Krzysztof Nawrocki, B. Golob, T. Buran, Dietrich Liko, P. Privitera, R. Henriques, E. C. Katsoufis, S. Cabrera, Rosy Nicolaidou, Tim Adye, Markus Elsing, Marta Calvi, R. Lauhakangas, Ph. Charpentier, J. C. Marin, Chariclia Petridou, R. C. Shellard, Vincenzo Canale, Geoffrey Smith, Clara Troncon, M. Reale, T. A. Filippas, A. Passeri, W. Krupinski, Stefano Ragazzi, M. Tyndel, G. J. Barker, Daniel Treille, M. Bigi, E. Zevgolatakos, J. Ridky, C. Parkes, A. Zalewska, G. Grosdidier, F. Formenti, F. Cao, E. Cortina, W. T. Meyer, D. Loukas, Olga Botner, F. Richard, Nikita Smirnov, Carmen García, Jacques Lemonne, J. Van Eldik, C. De La Vaissiere, G. Transtromer, P. Paganini, A. Tilquin, Yu. Sedykh, J. N. Jackson, J. Rames, G. Polok, Martijn Mulders, H. Mueller, Laurent Mirabito, Martino Margoni, E. Fokitis, Fabrizio Parodi, Tiziano Camporesi, C. K. Legan, J. Dolbeau, K. D. Brand, P. J. Holt, N. G. Redaelli, K. Stevenson, G. Valenti, P.S.L. Booth, J. Fuster, S. Meyer, N. I. Zimin, Charles Bricman, T. Myklebust, P. Herquet, M. R. Monge, E. K. Johansson, T. Burgsmueller, Manolis Dris, M. Canepa, C. Walck, F. Martinez-Vidal, Steinar Stapnes, U. Mjoernmark, R. Reinhardt, Yu.A. Khokhlov, A. Normand, Pierre Billoir, F. Simonetto, N. Vassilopoulos, F. Kapusta, W. Kucewicz, S. Hahn, B. Åsman, A. Firestone, V. Lefebure, C. De Clercq, D. Crennell, W. J. Murray, G. Smadja, R. Strub, O. Klapp, B. Jean-Marie, Borge Svane Nielsen, S. De Brabandere, Krzysztof Doroba, Chiara Meroni, A. W. Borgland, G. Maehlum, Vaclav Vrba, Hans Dijkstra, V. Malychev, A. Maio, M. J. Bates, C. Gaspar, M. S. Bilenky, Peter Kluit, M. Bonesini, L.J. Carroll, N. Neumeister, C. Bosio, P. N. Ratoff, P.A. Fischer, G. C. Zucchelli, T. Brenke, K. Korcyl, H. T. Phillips, Vladimir Cindro, J. Medbo, Toralf Bernhard Skaali, S. Almehed, Fabio Cossutti, L. Peralta, B. Loerstad, D. Gamba, J. P. Engel, N. N. Khovanski, R. Pain, J. Salt, S. Stanic, L. Bugge, J. P. Laugier, T. Lesiak, J. Libby, Ole Røhne, K. Grzelak, B. A. Khomenko, A. J. Camacho Rozas, I. Lippi, Paul Dauncey, N. Demaria, F. Verbeure, G. Damgaard, Paolo Checchia, Ph. Gavillet, P. Langefeld, J. J. Hernandez, L. Gorn, C. Bourdarios, J. H. Wickens, A. Leisos, Marco Paganoni, Allan Hallgren, L. Vitale, D. Z. Toet, D. Radojicic, M. Nieuwenhuizen, Flavio Fontanelli, D. Souza-Santos, P. Lutz, J. Hrubec, B. Stugu, B. Erzen, R. Silvestre, J. W. Lamsa, Klaus Moenig, M. A. Houlden, M. Blume, B. Bouquet, A. Deghorain, J. P. Tavernet, A. Perrotta, G. Borisov, M. Baubillier, C. Matteuzzi, O. Kouznetsov, G. Cosme, R. Chierici, A. M. Zaitsev, Alexander Vodopyanov, M. Witek, F. Hahn, M. E. Pol, C. Caso, A. Petrolini, Z. Krumstein, F. Scuri, A. De Min, G. Leder, F. Bianchi, C. Mariotti, V. Lepeltier, T. Spassov, J. E. Augustin, M. Davenport, Anna Lipniacka, C. Vander Velde, P. Chochula, A. Pullia, A. Konopliannikov, Juergen Thomas, D. Fassouliotis, G. Fanourakis, C. Joram, A. M. Wetherell, J. Cuevas Maestro, Mingshui Chen, O. Yushchenko, W. Oberschulte-Beckmann, A. Ferrer, R. Sekulin, A. Trombini, Ugo Amaldi, M. V. Castillo Gimenez, K. Karafasoulis, T. Podobnik, H. B. Crawley, P. Jonsson, A. Di Diodato, M. L. Turluer, D. Reid, M. Begalli, L. Lanceri, T. Wlodek, Gianni Zumerle, M. Pernicka, P. Poropat, O. Sahr, G. Sciolla, G. Myatt, Andromachi Tsirou, F. Barao, Andre Augustinus, T. Moa, R. Ehret, D. Bertrand, M. Battaglia, W. Van Doninck, H. Pernegger, A. C. Benvenuti, R. Moeller, D. Stampfer, L. K. Resvanis, M. Krammer, J. Garcia, W. Da Silva, P. Bruckman, Paul Baillon, Amiran Tomaradze, S. Fichet, Massimo Caccia, Vladimir Nikolaenko, O. Ullaland, V. Hedberg, P. Goncalves, V. Obraztsov, L. Jonsson, Marek Szczekowski, F. Tegenfeldt, S. Hoorelbeke, T. Todorov, J. P. Gerber, Paolo Ronchese, N. J. Kjaer, F. Zach, H. Klein, Stanislav Nemecek, V. Ruhlmann-Kleider, N. Pukhaeva, J. Dahm, R. Contri, K. Osterberg, P. Gris, C. Green, G. Tristram, T. Tabarelli, P. Rebecchi, H. Rahmani, Ariella Cattai, Luc Pape, U. Schwickerath, F. Ledroit, O. Smirnova, J.D. Richardson, O. Barring, M. A. Winter, Richard Jacobsson, Andrei Nomerotski, B. De Lotto, G. Crosetti, G. Gopal, S. Squarcia, G. Jarlskog, W. D. Apel, B. Franek, L. G. Tkatchev, P. Kokkinias, W. De Boer, P. Abreu, K. Belous, Imad Baptiste Laktineh, D. Y. Bardin, H. Saarikko, A. Galloni, S. O. Holmgren, BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), UCL - SST/IRMP - Institut de recherche en mathématique et physique, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, and LEP (IHEF, IoP, FNWI)
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, JET FRAGMENTATION, PHYSICS, EVENTS, Jet (particle physics), 01 natural sciences, Bottom quark, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, DELPHI, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Multiplicity (mathematics), LARGE ELECTRON POSITRON COLLIDER, Gluon, PARTICLE PHYSICS, Production (computer science), High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: An inclusive measurement of the average multiplicity of b (b) over bar pairs from gluons, g(b (b) over bar), in hadronic Z(0) events collected by the DELPHI experiment at LEP, is presented. A counting technique, based on jet b-tagging in 4-jet events, has been used. Looking for secondary bottom production in events with production of any primary flavour, by requiring two b-tagged jets in well defined topological configurations, gave g(b (b) over bar) = (0.21 +/- 0.11(stat) +/- 0.09(syst))%. This result was checked with a different method designed to select events with four b quarks in the final state. Agreement within the errors was found. (C) 1997 Elsevier Science B.V.
Published: 1997

41. Search for the $B_c$ meson

Author: P. Buschmann, R. Mc Kay, A. Andreazza, M. Verlato, G. D. Alekseev, J.D. Richardson, M. A. Winter, Richard Jacobsson, M. Barbi, E. I. Rosenberg, A. Onofre, R. Keranen, Francisco Matorras, M. Mc Cubbin, K. Hultqvist, Rafael Marco, B. De Lotto, G. Crosetti, Evgueni Vlasov, G. W. Van Apeldoorn, L. Ventura, K. Yip, Jorge-Armando Benitez Garcia, R. Lindner, M. Gunther, R. Mc Nulty, T. G M Malmgren, H. Wahlen, D. Bertini, K. H. Becks, O. Podobrin, C. Vander Velde, P. D. Dauncey, K. Muenich, P. Vincent, T. J. V. Bowcock, M. Tyndel, M. Weierstall, L.N. Gerdyukov, Rupert Leitner, G. Matthiae, G. J. Barker, E. Falk, A. G. Frodesen, R. Lauhakangas, Ph. Charpentier, L. G. Tkatchev, T. Tabarelli, S. Todorova, S-O. Holmgren, Louis Lyons, S. Katsanevas, M. Feindt, P. Antilogus, P. Negri, J. R. Mahon, Christine Kourkoumelis, E. Dahl-Jensen, A. Seitz, Ugo Amaldi, M. Berggren, M. Karlsson, Klaus Hamacher, M. Begalli, M. L. Andrieux, S. Gumenyuk, P. Rebecchi, D. Vilanova, B. Franek, P. Sponholz, M. Davenport, T. A. Filippas, T. Buran, S. Tzamarias, Markus Elsing, H. Rahmani, M. Pimenta, G. A. Chelkov, A. Baroncelli, R. Janik, T. Wlodek, M. Regler, G. Sciolla, H. J. Hilke, Lydia Roos, O. Yushchenko, Ariella Cattai, J. Drees, Tiziano Camporesi, P. B. Renton, W. Neumann, T. Bolognese, Ch. Jarlskog, G. P. Gopal, Juan Fuster, R. Sekulin, R. Alemany, G. Transtromer, D. C. Fries, F. Ledroit, G. Cosme, P. J. Holt, D. Fassouliotis, W. D. Apel, A. Markou, P. Jonsson, R. Ehret, F. Pierre, P. Seager, M. Battaglia, W. Van Doninck, O. Barring, B. Marechal, A. Van Lysebetten, Sandor Czellar, F. Formenti, F. Cao, Rosy Nicolaidou, S. Cabrera, Evangelos Gazis, R. Gokieli, C. Gaspar, J. M. Heuser, T. Moa, G. Maehlum, Marta Calvi, P. Van Dam, Vincenzo Canale, T. Rovelli, P. V. Chliapnikov, A. Ferrer, D. W. Lane, L. Tortora, Yu. Sedykh, Geoffrey Smith, Andre Tilquin, Olga Botner, P. Jalocha, Dietrich Liko, P. Privitera, G. Ekspong, F. J. Harris, A. Passeri, W. Krupinski, P A. Delpierre, I. Kronkvist, Yu. Gouz, H. Mueller, J. D. Durand, Amiran Tomaradze, Fares Djama, K. Papageorgiou, A. G. Olshevski, M. Merk, L. Chaussard, W.S.C. Williams, A.N. Sisakian, G. Sajot, Ernesto Migliore, M. Novak, Mogens Dam, Phillip Allport, S. Simonetti, J. P. Gerber, Carmen García, P. Frenkiel, O. Ullaland, J. Van Eldik, Heinz Pernegger, Martijn Mulders, I. Roncagliolo, H. Foeth, G. Della Ricca, D. J. Holthuizen, U. Schwickerath, R. Henriques, V. Chorowicz, F. R. Cavallo, Maciej Górski, M. Reale, T. Hill, Daniel Treille, M. Bigi, M. Schimmelpfennig, E. Zevgolatakos, G. Polok, G. Wilkinson, T. L. Hessing, J. Ridky, B. Ueberschaer, Mario Sannino, Josef Strauss, B. Bouquet, A. B. Fenyuk, B. Jean-Marie, Martino Margoni, E. Fokitis, A. Stocchi, C. Walck, R. Reinhardt, Yu.A. Khokhlov, B. Muryn, F. Naraghi, F. L. Navarria, G. Vegni, P. Kokkinias, G. C. Zucchelli, P. Niss, V. Chabaud, V. Ruhlmann-Kleider, R. Contri, R. Orava, A. Normand, J. H. Cowell, P. Abreu, Pascal Paganini, Nikita Smirnov, P. Collins, Monika Wielers, H. Herr, A. Zalewska, S. Navas, D. Loukas, J. M. Lopez, B. Golob, A. Trombini, Ugo Gasparini, Jacques Lemonne, M. Espirito Santo, W. Venus, F. Carena, M. Mazzucato, Wolfgang Adam, M. Szczekowski, B. D'Almagne, G. Eigen, I. A. Tyapkin, R. A. Brenner, G. Myatt, Daniel Bloch, I. Stavitski, F. Zach, R. Sosnowski, Ahmimed Ouraou, Julien Guy, K. A. Drees, Juan Abel Barrio, S. S. Meyer, Cristian Stanescu, P. Branchini, Laurent Mirabito, D. Zontar, Alexander Lincoln Read, M. Szeptycka, Marc Besancon, O. Solovianov, H. Schneider, J. Dolbeau, I. V. Ajinenko, Stanislav Nemecek, Barry King, Th D. Papadopoulou, P. Bambade, P.S.L. Booth, Luc Pape, E. Spiriti, G. Valenti, Chiara Mariotti, Yu. Belokopytov, N. Pukhaeva, M. Pernicka, O. Smirnova, Charles Bricman, J. Dahm, M. R. Monge, Tim Adye, H. Palka, V. Gracco, D. Zavrtanik, Sandra Amato, Christian Weiser, T. Podobnik, K. Belous, P. Herquet, Jesus Marco, G. Lenzen, R. Frühwirth, J. Timmermans, V. Kostioukhine, M. Koratzinos, A. Firestone, W. Kucewicz, S. Hahn, Imad Baptiste Laktineh, D. Y. Bardin, W. Da Silva, H. Saarikko, S. Marti i Garcia, D. Edsall, Y. Sacquin, A. Djannati, Kathy Huet, Valeriy Pozdniakov, T. Burgsmueller, Alessandra Romero, V. Lepeltier, A. Ruiz, C. Defoix, F. Fulda-Quenzer, V. Obraztsov, Manolis Dris, M. A E Schyns, E. Vallazza, E. Graziani, P. Roudeau, J. M. Brunet, Kerem Cankocak, L. Jonsson, T. Todorov, Ivano Lippi, Marcos Dracos, C. De Clercq, G. Piana, P. Gris, W. J. Murray, A. Sadovsky, R. Strub, Paolo Checchia, Pierre Juillot, E. Boudinov, P. Kubinec, B. Koene, Ph. Gavillet, M. Kaiser, T. Brenke, K. Korcyl, M. Zito, Manfred Krammer, Denis Gelé, A. Nomerotski, Fabrizio Scuri, M. Michelotto, W. T. Meyer, K. Grzelak, J. MacNaughton, Paolo Morettini, J. G. Loken, A. Grefrath, Allan Hallgren, C. De Saint-Jean, P. Beilliere, Claire Bourdarios, M. Nieuwenhuizen, N. Redaelli, Flavio Fontanelli, C. Kreuter, M. Blume, A. Deghorain, Krzysztof Nawrocki, M. Canepa, U. Mjoernmark, Pierre Billoir, E. Higon, C. Caso, A. Petrolini, P. Chochula, A. M. Wetherell, L. Lanceri, K. Stevenson, E. Karvelas, P. Bruckman, Vaclav Vrba, Natale Demaria, Hans Dijkstra, Piotr Zalewski, S. Hoorelbeke, Paolo Ronchese, M. Bozzo, V.A. Uvarov, N. J. Kjaer, A. Pullia, R. C. Shellard, Mingshui Chen, J. N. Jackson, E. K. Johansson, J. Libby, Steinar Stapnes, B. A. Khomenko, J. Rames, C. Green, G. Tristram, F. Simonetto, F. Kapusta, G. Leder, N. Vassilopoulos, C. K. Legan, B. Åsman, P. Langefeld, V. Lefebure, D. Crennell, F. Mandl, Tord Ekelof, G. Smadja, L. Gorn, V. Malychev, H. Klein, J. J. Hernandez, A. De Angelis, K. Osterberg, G. Grosdidier, A. Klovning, C. Bosio, D. Bertrand, H. T. Phillips, Vladimir Cindro, Robert S. Brown, S. Almehed, H. B. Crawley, W. Bonivento, E. Cortina, Clara Troncon, A. C. Benvenuti, M. S. Bilenky, B. Loerstad, G. Barbiellini, M. E. Pol, Z. Krumstein, A. Miagkov, W. Ruckstuhl, D. Stampfer, L.J. Carroll, J. Baudot, P. N. Ratoff, P.A. Fischer, A. De Min, N. N. Khovanski, W. Bartl, Matteo Pegoraro, J. Medbo, C. De La Vaissiere, P. Pages, Paul Baillon, R. Pain, Fabio Cossutti, Fabrizio Parodi, Patrick Jarry, G. Rinaudo, J. Salt, S. Fichet, J. P. Laugier, P. Weilhammer, K. D. Brand, Jakita O. Thomas, K. Woschnagg, N. I. Zimin, T. Lesiak, S. Ragazzi, B. Tome, Anna Lipniacka, J. P. Tavernet, A. Perrotta, L. Bugge, A. J. Camacho Rozas, D. Z. Toet, O. Klapp, E. C. Katsoufis, S. Squarcia, L. Serbelloni, G. Borisov, Borge Svane Nielsen, J. W. Lamsa, L. M. Mundim, S. De Brabandere, L. De Paula, G. Jarlskog, M. Baubillier, Krzysztof Doroba, Chiara Meroni, K. Kurvinen, A. Maio, D. Wicke, J. H. Wickens, Marco Paganoni, I. Ripp, C. Martinez-Rivero, Peter Kluit, W. De Boer, M. J. Bates, A. M. Zaitsev, Alexander Vodopyanov, C. Joram, L. Vitale, F. Martinez-Vidal, D. Radojicic, F. Bianchi, Toralf Bernhard Skaali, D. Gamba, D. Souza-Santos, P. Lutz, F. Verbeure, C. Petridou, Samo Stanič, A. Tonazzo, B. Stugu, M. Gandelman, Carlos Lacasta, J. Cuevas Maestro, R. Moeller, K. Karafasoulis, A. Di Diodato, M. L. Turluer, D. Reid, L. K. Resvanis, Gianni Zumerle, Massimo Caccia, P. Poropat, O. Sahr, Andromachi Tsirou, F. Barao, Vladimir Nikolaenko, V. Hedberg, Andre Augustinus, M. A. Bizouard, B. Sitar, P. Siegrist, Maurizio Bonesini, J-C. Marin, B. Erzen, P. Gunnarsson, J. Sanchez, A. Galloni, L. S. Vertogradov, Z. Hajduk, W. Oberschulte-Beckmann, L. Di Ciaccio, Josef Hrubec, A. M. Segar, W. A. Mitaroff, F. Richard, O. Kouznetsov, R. Chierici, M. Witek, F. Hahn, C. Matteuzzi, J. P. Engel, M. V. Castillo Gimenez, G. Damgaard, R. Silvestre, Klaus Moenig, M. A. Houlden, T. Spassov, J. E. Augustin, C. Parkes, K. Rybicki, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), LEP (IHEF, IoP, FNWI), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, UCL - SST/IRMP - Institut de recherche en mathématique et physique, BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, Hadron, MathematicsofComputing_GENERAL, 01 natural sciences, DECAYS, Nuclear physics, CHARMONIUM, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, DELPHI, Physics, SPECTROSCOPY, 010308 nuclear & particles physics, TheoryofComputation_GENERAL, LARGE ELECTRON POSITRON COLLIDER, QCD FRAGMENTATION FUNCTIONS, MathML, PARTICLE PHYSICS, HEAVY QUARKS, Particle Physics - Experiment
Abstract: In a sample of 3.02 million hadronic $Z^o$ decays collected by the DELPHI detector, 270 $J/\psi \into$ \lplm candidates have been selected. A search for fully reconstructed $B_c\upm$ mesons has yielded one $B_c\upm\to J/\psi ~\pi\upm$ candidate, no $B_c\upm \into J/\psi ~\ell\upm ~\nu_\ell$ candidates, and one $B_c\upm \into J/\psi ~\pi^+~\pi^- ~\pi\upm$ candidate, consistent with expected background in each channel. The following 90\% confidence level upper limits are determined: r(Z^o \into B_c\upm ~X) \times Br(B_c\upm \into J/\psi ~\pi\upm) (1.05~{\mathrm{to}}~0.84) \times 10^{-4} and r(Z^o \into B_c\upm ~X) \times Br(B_c\upm \into J/\psi ~\ell\upm ~\nu_\ell) (5.8~{\mathrm{to}}~5.0) \times 10^{-5}, where the ranges quoted correspond to the range of predicted $B_c\upm$ lifetimes from 0.4 to 1.4 ps, and r(Z^o \into B_c\upm ~X) \times Br(B_c\upm \into J/\psi ~\pi^+ ~\pi^- ~\pi\upm) 1.75 \times 10^{-4}, constant over the range of predicted $B_c\upm$ lifeti
Published: 1997

42. The DELPHI pixels

Author: Chiara Meroni, I.M. Gregor, P. Borghi, D. Sauvage, F. Ledroit, Frank Hartmann, B. Courty, K. Moenig, K. H. Becks, W. De Boer, J.C. Clemens, P. Gerlach, G. Tristram, L. Guglielmi, M. Pindo, Massimo Caccia, Lydia Roos, B. Uberschar, H. Leb, J. M. Heuser, J. Drees, A. Koepert, P. Sicho, K. W. Glitza, M. Wielers, S. S. Meyer, N. Redaelli, T. Mouthuy, J. M. Brunet, P. Delpierre, J.P. Turlot, Vaclav Vrba, H. Pert, G. Vegni, M. Kaiser, Susanne Kersten, M. Cohen-Solal, G. Maehlum, M. Raymond, D. Knoblauch, J.J. Jaeger, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Pixel, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Substrate (printing), Tracking (particle physics), 01 natural sciences, Kapton, Optics, 0103 physical sciences, High Energy Physics::Experiment, Vertex detector, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, business, Instrumentation, computer, Delphi, Beam (structure), computer.programming_language
Abstract: To improve tracking in the very forward direction for running at LEP200, the angular acceptance of the DELPHI Vertex detector has been extended from 45° to 11° with respect to the beam axis. Pixel detector crowns cover the region between 25° and 13°. Due to very tight space and material thickness constraints it was necessary to develop new techniques (integrated busses in the detector substrate, high density layout on Kapton, etc.). About 1000 cm 2 of pixels are already installed and working in DELPHI. Techniques, tests and production of these detectors will be described, as well as the main problems encountered during this work.
Published: 1996

43. Progress in the construction of the DELPHI pixel detector

Author: I.M. Gregor, J. M. Heuser, K. H. Becks, Susanne Kersten, M. Pindo, N. Redaelli, J.P. Turlot, H. Leb, M. Raymond, M. Cohen-Solal, Massimo Caccia, G. Vegni, G. Tristram, M. Kaiser, B. Uberschar, A. Körpert, D. Knoblauch, L. Guglielmi, G. Maehlum, J.J. Jaeger, P. Delpierre, J.C. Clemens, P. Gerlach, F. Ledroit, Frank Hartmann, K. Moenig, Lydia Roos, J. Drees, W. De Boer, B. Courty, K. W. Glitza, S. S. Meyer, T. Mouthuy, D. Sauvage, Chiara Meroni, P. Borghi, M. Wielers, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Heijne E.H.M., DELPHI, and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, chemistry.chemical_element, Chip, 01 natural sciences, Optics, chemistry, 0103 physical sciences, High Energy Physics::Experiment, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, business, Instrumentation, computer, Delphi, computer.programming_language, Pixel detector
Abstract: The status of the pixel detector for the DELPHI Silicon Tracker is presented. The main characteristics of the detector, the readout chip and the assembly are summarized.
Published: 1996

44. An upper limit for Br(Z(0)->ggg) from symmetric 3-jet Z(0) hadronic decays

Author: J.D. Richardson, G. W. Van Apeldoorn, M. A. Winter, Richard Jacobsson, A. Petrolini, L. Ventura, K. Yip, I. A. Tyapkin, R. Lindner, G. Valenti, M. Petrovyck, I. Lippi, F. Pierre, J. H. Wickens, B. Muryn, Marco Paganoni, B. De Lotto, G. Crosetti, Evgueni Vlasov, I. V. Ajinenko, Vincent Hedberg, A. Ferrer, D. W. Lane, M. Weierstall, J. Libby, M. Pimenta, B. A. Khomenko, Pierre Billoir, G. Ekspong, Christine Kourkoumelis, E. Dahl-Jensen, Francesco Navarria, Vaclav Vrba, M. A. Bizouard, Hans Dijkstra, T. Spassov, L. Vitale, P. N. Ratoff, Tord Ekelof, D. Radojicic, P. Langefeld, R. Moeller, M. Baubillier, V. Canale, O. Podobrin, P. Siegrist, M. Begalli, Piotr Zalewski, H. Pernegger, P. Lutz, F. Barao, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, B. Loerstad, J-C. Marin, B. Erzen, R. Gokieli, L. G. Tkatchev, F. Stichelbaut, P. Buschmann, R. Mc Kay, L. K. Resvanis, V.A. Uvarov, F. Simonetto, Pierre Juillot, E. Boudinov, B. Koene, G. Leder, J. N. Jackson, A. Andreazza, B. Åsman, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, J. Rames, P. Kokkinias, S. Cabrera, C. Gaspar, R. Contri, P. Kubinec, T. J. V. Bowcock, T. Wlodek, F. Parodi, T. L. Hessing, R. Henriques, A. B. Fenyuk, G. C. Zucchelli, V. Lefebure, C. K. Legan, E. Karvelas, L. Gorn, V. Lepeltier, A. Onofre, C. Jarlskog, Paolo Checchia, M. Kaiser, J. MacNaughton, J. Cuevas Maestro, D. Crennell, F. Mandl, Claire Bourdarios, M. Nieuwenhuizen, Klaus Hamacher, R. Lauhakangas, Clara Troncon, W.S.C. Williams, A. Seitz, Massimo Caccia, Vladimir Nikolaenko, Robert S. Brown, Paolo Morettini, D. Bertrand, J. G. Loken, A. Grefrath, Jiri Chudoba, C. De Saint-Jean, P. Beilliere, K. Muenich, R. Keranen, R. A. Brenner, J. Dolbeau, M. Blume, A. Deghorain, G. Delia Ricca, V. Gracco, O. Klapp, Philippe Charpentier, Francisco Matorras, Lydia Roos, C. Martinez-Rivero, J. Drees, Luis Peralta, F. Kapusta, R. Sosnowski, P. Vincent, F. Naraghi, E. Cortina, K. D. Brand, Jean-Dominique Durand, N. I. Zimin, S. Ragazzi, E. K. Johansson, Steinar Stapnes, V. Chorowicz, G. Rinaudo, Krzysztof Nawrocki, Borge Svane Nielsen, S. De Brabandere, Krzysztof Doroba, Chiara Meroni, N. Vassilopoulos, D. Souza-Santos, P. Jalocha, E. Higon, F. Scuri, W. Ruckstuhl, J. Baudot, Matteo Pegoraro, Louis Lyons, J. P. Tavernet, Evangelos Gazis, Peter Kluit, G. A. Chelkov, O. Barring, Andrey Sokolov, P. Niss, Paolo Privitera, G. Wilkinson, J. M. Lopez, J. P. Engel, M. V. Castillo Gimenez, A. M. Wetherell, A. Pullia, V. Malychev, J. J. Hernandez, D. J. Holthuizen, B. Franek, M. Donszelmann, Danilo Zavrtanik, L. Lanceri, P.S.L. Booth, M. Mazzucato, J. R. Mahon, Paul Dauncey, N. Demaria, A. G. Olshevski, Tiziano Rovelli, A. Galloni, S. O. Holmgren, L. S. Vertogradov, T. Tabarelli, A. G. Frodesen, M. Merk, M. Chen, J. Masik, M. Barbi, G. Damgaard, J. Salt, F. Formenti, Demetrios Loukas, P. Rebecchi, F. Cao, U. Schwickerath, A. Baroncelli, P. Van Dam, L. Chaussard, Chiara Mariotti, S. Hahn, Francesca Romana Cavallo, A. Stocchi, Z. Hajduk, P. Delpierre, Marek Szczekowski, W. Oberschulte-Beckmann, R. C. Shellard, Josef Hrubec, H. Rahmani, D. Fassouliotis, Ariella Cattai, M. L. Andrieux, H. Foeth, Wojciech Kucewicz, Mogens Dam, S. Hoorelbeke, Paolo Ronchese, Maria Roberta Monge, A. Zalewska, E. Rosso, H. Klein, P. Branching, Maciej Górski, C. De La Vaissiere, A. Tonazzo, K. Stevenson, K. Osterberg, A. M. Segar, M. S. Bilenky, Y. Sacquin, L.J. Carroll, Kathy Huet, Valeriy Pozdniakov, R. Alemany, N. J. Kjaer, F. Ledroit, J. Fuster, Jacques Lemonne, P.A. Fischer, I. Stavitski, Leif J. Jönsson, F. Fontanelli, O. Sahr, A. Tilquin, N. Neumeister, Barry King, P. Gavillet, E. Spiriti, Laurent Mirabito, M. Berggren, J. Medbo, Fabio Cossutti, A. Passeri, P. Weilhammer, G. Myatt, H. B. Crawley, L. Tortora, T. Lesiak, F. J. Harris, T. G M Malmgren, H. Wahlen, P. Herquet, Per Jönsson, A. Klovning, W. Bonivento, P. Pages, U. Mjoernmark, C. Bosio, J. Timmermans, C. Green, G. Tristram, Wolfgang Adam, P. V. Chliapnikov, L. Serbelloni, J. W. Lamsa, Andrei Nomerotski, V. V. Lapin, C. De Clercq, W. J. Murray, K. Woschnagg, Kerem Cankocak, Z. Krumstein, G. Cosme, Paul Baillon, D. Zontar, Alexander Lincoln Read, M. Szeptycka, Marc Besancon, K. Kurvinen, E. C. Katsoufis, Konstantinos Papageorgiou, H. T. Phillips, Vladimir Cindro, A. Tomaradze, R. Silvestre, L. De Paula, D. Wicke, B. Ueberschaer, T. Burgsmueller, E. Falk, R. Barate, Marcos Dracos, Maria Elena Pol, Carlos Lacasta, A. De Min, P. Roudeau, Martijn Mulders, Javier Sánchez, K. H. Becks, E. Vallazza, G. Sajot, A. Trombini, Klaus Moenig, R. Strub, P. Seager, M. Verlato, S. Katsanevas, O. Kouznetsov, G. Smadja, J. Van Eldik, M. Karlsson, Yu. Belokopytov, M. J. Bates, M. Bonesini, Toralf Bernhard Skaali, D. Gamba, M. A. Houlden, Manolis Dris, L. Di Ciaccio, P. Abreu, T. S. Hill, Luc Pape, N. N. Khovanski, W. Bartl, S. Marti i Garcia, Anna Lipniacka, M. Schimmelpfennig, G. Vegni, L. Bugge, Andrea Perrotta, A. J. Camacho Rozas, T. A. Filippas, M. Regler, M. Davenport, Martino Margoni, E. Fokitis, Mariusz Witek, M. Krapmier, J. P. Laugier, D. Z. Toet, B. Stugu, M. Gunther, S. Gumenyuk, M. Gandelman, Juan Abel Barrio, A. De Angelis, C. Joram, C. Bricman, P. Collins, Rupert Leitner, G. Piana, P. Brackman, R. Ehret, Alberto Benvenuti, D. Edsall, G. Grosdidier, K. Korcyl, I. Ripp, O. Yushchenko, A. Ruiz, G. Matthiae, P. B. Renton, Maurizio Canepa, Sandra Amato, R. Janik, R. Mc Nulty, K. Rybicki, S. Fichet, K. Belous, R. Sekulin, E. I. Rosenberg, Yu. Sedykh, D. C. Fries, Oxana Smirnova, M. Wielers, K. Karafasoulis, H. Mueller, Josef Strauss, D. Bertini, S. Todorova, Imad Baptiste Laktineh, M. A E Schyns, V. Ruhlmann-Kleider, M. Tyndel, B. Marechal, A. Di Diodato, D. Y. Bardin, S. Squarcia, V. Chabaud, Juergen Thomas, H. Saarikko, Marta Calvi, M. Espirito Santo, B. Golob, F. Verbeurc, Geoffrey Smith, M. L. Turluer, Daniel Bloch, D. Reid, W. Venus, A. Romero, S. Sirnonetti, Gianni Zumerle, Patrick Jarry, P. Bambade, T. Moa, G. Maehlum, H. J. Hilke, A. Firestone, M. Battaglia, B. Bouquet, R. Nicolaidou, P. Poropat, Andromachi Tsirou, Andre Augustinus, W. Neumann, T. Bolognese, I. Kronkvist, Theodora Papadopoulou, A. Buys, H. Palka, Ahmimed Ouraou, B. Jean-Marie, R. Orava, W. Da Silva, W. A. Mitaroff, A. Van Lysebetten, Sandor Czellar, Cristian Stanescu, G. D. Alekseev, B. D'Almagne, G. Eigen, Mario Sannino, H. Schneider, G. Polok, Fares Djama, O. Ullaland, F. Richard, P. Chochula, Yu. Gouz, M. Mc Cubbin, William Trischuk, A. Markou, K. Hultqvist, Rafael Marco, C. Matteuzzi, Ernesto Migliore, T. Brenke, J. E. Augustin, W. Krupinski, M. Zito, S. Almehed, R. Chierici, F. Hahn, D. Vilanova, W. T. Meyer, K. Grzelak, H. Herr, Ugo Gasparini, Allan Hallgren, B. Tome, P. Antilogus, K. A. Drees, J. Guy, Tiziano Camporesi, P. J. Holt, Tim Adye, Marco Bozzo, P. Paganini, P. Frenkiel, F. Waldner, C. Caso, C. Walck, Yu.A. Khokhlov, A. Normand, C. Weiser, M. Novak, C. Defoix, F. Fulda-Quenzer, A. N. Sisakian, A. Sadovsky, E. Graziani, J. M. Brunet, Denis Gelé, M. Michelotto, N. Redaelli, C. Kreuter, L.N. Gerdyukov, T. Buran, Markus Elsing, Olga Botner, G. Transtromer, Carmen García, Reynald Pain, J. P. Gerber, F. Carena, F. Zach, S. S. Meyer, N. Pukhaeva, J. Dahm, M. Pernicka, Ugo Amaldi, W. De Boer, E. Zevgolatakos, G. Sciolla, Jesus Marco, G. Lenzen, F. Martinez-Vidal, V. Kostioukhine, J. Garcia, M. Koratzinos, V. Obraztsov, T. Todorov, I. Roncagliolo, P. Gris, Dietrich Liko, Chariclia Petridou, Branislav Sitar, M. Reale, Daniel Treille, M. Bigi, J. Ridky, C. Parkes, M. Feindt, S. Sánchez Navas, P. Negri, P. Sponholz, Göran Jarlskog, L. Mundim, G. P. Gopal, W. D. Apel, J. H. Cowell, P. P. Allport, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, E+E-PHYSICS, 010308 nuclear & particles physics, LUND MONTE-CARLO, Hadron, 01 natural sciences, LARGE ELECTRON POSITRON COLLIDER, Charged particle, JET FRAGMENTATION, Gluon, Nuclear physics, CHARGED-PARTICLE MULTIPLICITY, EVENTS, 0103 physical sciences, Large Electron–Positron Collider, PARTICLE PHYSICS, DELPHI, Correlation method, Multiplicity (chemistry), 010306 general physics
Abstract: An upper limit for BR(Z(0) --> 3g) is obtained from a correlation method, which distinguishes statistically between quark and gluon jets by using the difference in their charged particle multiplicity distributions. From the sample of threefold symmetric three-jet events collected by the DELPHI experiment at LEP during 1991-1994, the 95% confidence level upper limit is deduced to be: BR(Z(0) --> 3g) less than or equal to 1.6 x 10(-2) for the JADE and BR(Z(0) --> 3g) less than or equal to 1.5 x 10(-2) for the DURHAM jet-finder.
Published: 1996

45. Performance of the DELPHI detector

Author: G. D. Alekseev, S. Sánchez Navas, P. Negri, G. W. Van Apeldoorn, L. Hessingt, P. Sponholz, L. Ventura, K. Yip, R. Lindner, K. Hultqvist, Y. Lemoigne, G.P. Gopal, F. Pierre, G. Matthiae, L. Jonsson, Ch. Jarlskog, A. C. Benvenuti, P. Weilhammer, M. Weierstall, W. D. Apel, Tiziano Rovelli, D. W. Lane, M A. Lopez-Aguera, V. Chliapnikovp, A. Perrotta, G. Ekspong, J. Masik, Stefano Ragazzi, F. Fulda-Quenzer, E. Dahl-Jensen, M. Bonesini, M. Baubillier, S. Simonetti, M. Begalli, C. Kourkoumelis, F. Formenti, F. Cao, E. Graziani, J. M. Brunet, Kathy Huet, a N. Sissakian, R. Alemany, A. M. Zaitsev, N. Ershaidat, T. Bolognese, Per Jönsson, A. Tomaradze, O. Kouznetsov, A. Passeri, H. Klein, R. Mckay, Louis Lyons, R. Aleksan, Demetrios Loukas, M. L. Andrieux, F. Bianchi, W. Bonivento, Kerem Cankocak, V. Hedberg, Luc Pape, L.N. Gerdyukov, Martino Margoni, E. Fokitis, E. I. Rosenberg, B. Jean-Marie, M. Verlato, B. Golob, Markus Elsing, A. Klovning, M. Pimenta, L.J. Carroll, G. Zumerle, Norbert Neumeister, H. Muller, M. Pegoraro, B. Uberschar, A. N. Karyukhin, R. Zuberi, P.A. Fischer, J. Medbo, Y. Arnoud, C. Bosio, R. Sekulin, M V. Castillo-Gimenez, B. Marechal, Bjarne Stugu, Olga Botner, G. Smadja, U. Mjornmark, J. Van Eldik, P. Jalocha, T. S. Hill, M. Schimmelpfennig, J. Murray, W. Kucewicz, D. Edsall, G. Grosdidier, Fabio Cossutti, R. Moller, E. Karvelas, G. Transtromer, P. Abreu, J. G. Loken, D. Gele, W. Trischuk, Carmen García, W. Krupinski, T. Lesiak, V. Perevozchikov, H. Foeth, T. Buran, H. T. Phillips, Vladimir Cindro, H. Palka, Lydia Roos, C. Martinez-Rivero, Alessandro Petrolini, J. J. Hernandez, K. A. Drees, A. M. Wetherell, O. Solovianov, J. Guy, N. Smirnov, Marc Winter, I. Lippi, C. Troncon, Alessandra Romero, A. Ruiz, M. A E Schyns, M. S. Bilenky, S. Cabrera, O. Podobrin, Tord Ekelof, B. Lorstad, D. Vilanova, K. Osterberg, Ariella Cattai, U. Gasparini, K. Monig, A. De Angelis, P. Collins, J. H. Wickens, Tiziano Camporesi, Maurizio Canepa, B. Muryn, Jose Luis Contreras, R. Lauhakangas, P. J. Holt, G. Maehlum, Tim Adye, N. G. Redaelli, D. Bertrand, J. W. Lamsa, Daniel Bloch, Evangelos Gazis, A. Markou, C. Vander Velde, A. Onofre, Juan Abel Barrio, Jiri Chudoba, P. B. Renton, Ahmimed Ouraou, M. Pindo, Maria Elena Pol, M. Blume, F. Barao, J. P. Engel, S. Katsanevas, Marco Bozzo, A. G. Frodesen, M. Feindt, J-C. Marin, R. Gokieli, S-O. Holmgren, Jesus Marco, L. Vitale, L. S. Vertogradov, D. Radojicic, E. Cortina, Stéphane Plaszczynski, D. C. Fries, V. Ruhlmann-Kleider, W. Ruckstuhl, R. Strub, R. Henriques, P. Frenkiel, Fares Djama, Lucio Cerrito, J.D. Richardson, Richard Jacobsson, K. H. Becks, E. Vallazza, E. C. Katsoufis, Marta Calvi, Klaus Hamacher, T. A. Filippas, Jan Ridky, Vincenzo Canale, H. Pernegger, H. Wahlen, P. Lutz, A. Maio, F. Simonetto, M. Dracos, L. Chaussard, G. Crosetti, Sandra Amato, F. Martinez-Vidal, M. Koratzinos, Gueorgui Chelkov, Imad Baptiste Laktineh, S. Squarcia, Geoffrey Smith, H. Saarikko, N. Demaria, N.I. Zimin, J. Baudot, M. Paganoni, Ugo Amaldi, C. Weiser, Dietrich Liko, Mariusz Witek, M. Gunther, Goeran Jarlskog, R. Sosnowski, W. De Boer, E. Zevgolatakos, A. Deghorain, T. Tabarelli, E. Higon, S. Bosworth, B. Tome, P. Vincent, F. Naraghi, P. Antilogus, P. Rebecchi, G. Damgaard, T. Todorov, M. Wielers, M. Krammer, R. A. Brenner, K. Karafasoulis, H. Herr, V. Lefebure, M. Espirito-Santo, Z. Hajduk, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, Robert S. Brown, D. Crennell, Chiara Mariotti, F. Mandl, F. Scuri, H. Rahmani, R. Ehret, B. De Lotto, Rupert Leitner, G. Piana, D. Fassouliotis, M. Reale, A. Seitz, Maciej Górski, M. L. Turluer, D. Reid, M. Mccubbin, A. Normand, V. Nikolaenko, L. K. Resvanis, L. De Paula, L. Bugge, Daniel Treille, M. Bigi, B. Dalmagne, P. Pages, M. Donszelmann, M. Tyndel, S. J. Alvsvaag, E. Agasi, F. Ledroit, Jacques Lemonne, D.Yu. Bardin, O. Ullaland, J. Chauveau, S. C. Blyth, S. Hahn, M. Davenport, S. Stapnes, Josef Strauss, J. M. Lopez, I. A. Tyapkin, Francesca Romana Cavallo, P. Kokkinias, C. Parkes, K. Woschnagg, W. Van Doninck, Andrei Nomerotski, J. Cuevas-Maestro, L. Lanceri, V. Chabaud, Patrick Jarry, Yu. Sedykh, B. Koene, F. Stichelbaut, P. Buschmann, M. Regler, M. Petrovyck, F. Parodi, Chiara Meroni, W. Venus, P. Juillot, V. V. Lapin, G. Lenzen, L. Tortora, C. Petridou, F. J. Harris, G. Rinaudo, I. V. Ajinenko, P. Billoir, B. Franek, V. Pozdniakov, A. Pullia, Carlos Lacasta, D. J. Holthuizen, Mogens Dam, Krzysztof A. Rybicki, Z. Krumstein, J. Garcia, I. Stavitski, R. Keranen, J.-P. Tavernet, Francisco Matorras, D. Souza-Santos, C. Gaspar, Y. Sacquin, A. Galloni, M. Gibbs, A. De Min, S. Hoorelbeke, P. Kluit, Wolfgang Adam, Paul Baillon, I. Siccama, Yu. Belokopytov, R. Nicolaidou, J. N. Jackson, Phillip Allport, I. Kronkvist, V. Obraztsov, Paolo Morettini, Paolo Ronchese, P. Poropat, B. Erzen, N. J. Kjaer, G. Della Ricca, I. Roncagliolo, Th. D. Papadopoulou, M. Battaglia, C. De Saint-Jean, P. Beilliere, J. Dolbeau, O. Smirnova, V. Chorowicz, B. Sitar, W. Neumann, W. Oberschulte-Beckmann, B. Åsman, J. P. Gerber, P. Bambade, F. Verbeure, P.S.L. Booth, C. Joram, C. Bricman, Y. Dufour, A. Sadovsky, P. N. Ratoff, R. C. Shellard, G. Tristram, J. Drees, M. Michelotto, A. Trombini, P. D. Dauncey, Sandor Czellar, José Salt, F. Zach, K. Kurvinen, M. Zito, D. Wicke, S. S. Meyer, A. M. Segar, Cristian Stanescu, P. Branchini, M. R. Monge, Krzysztof Nawrocki, P. Carrilho, M. Berggren, C. Caso, H. Schneider, A. Augustinus, W. Hao, O. Barring, C. Williams Ws, G. Polok, R. Barate, E. Vlasov, J. Dahm, P. Delpierre, A. Baroncelli, P. Herquet, R. Contri, G. Myatt, V. Gracco, P. Van Dam, W. Da Silva, W. A. Mitaroff, A. Firestone, K. Doroba, Yu. Gouz, A. Buys, J. Sanchez, Ph. Charpentier, M. Houlden, Manolis Dris, L. G. Tkatchev, C. De La Vaissiere, A. Tilquin, F. Richard, P. Chochula, C. Matteuzzi, M. Mazzucato, C. Kreuter, Barry King, M. Karlsson, E. Spiriti, S. Almehed, R. Chierici, F. Hahn, G. Sajot, R. Frühwirth, J. Timmermans, A. Lipniacka, A. Andreazza, Mario Sannino, M. Gandelman, J. E. Augustin, S. Lamblot, G. Eigen, V. Falaleev, B. Bouquet, H. B. Crawley, L. Brillault, P. H. Kramer, Ciacciol. Di, Vaclav Vrba, Hans Dijkstra, P. Privitera, Piotr Zalewski, D. Zontar, C. Bourdarios, C. Declercq, A. Tsirou, J. Rames, T. B. Skaali, C. K. Legan, F. Carena, A. B. Fenyuk, G. C. Zucchelli, V. Lepeltier, A. S. Vodopyanov, Paolo Checchia, G. Vegni, Ph. Gavillet, T. Moa, M. Kaiser, J. MacNaughton, P. Paganini, M. Nieuwenhuizen, Flavio Fontanelli, T. J. V. Bowcock, I Garcia S. Marti, R. McNulty, T. Burgsmuller, E. K. Johansson, N. Vassilopoulos, V. Malychev, A. Tonazzo, A. G. Olshevski, A. J. Camacho Rozas, Antonio Ferrer, D. Z. Toet, P. Siegrist, I. Ripp, R. Janik, U. Schwickerath, Guy Wilkinson, P. Kubinec, F. Dupont, A. Zalewska, P. Seager, W. T. Meyer, Luiz Mundim, N. N. Khovanski, W. Bartl, K. D. Brand, J. P. Laugier, B. A. Khomenko, A. Stocchi, Francesco Navarria, C. Defoix, T. Brenke, H. J. Hilke, P. Langefeld, E. Falk, T. Maron, P. Roudeau, K. Grzelak, M. Prest, M. J. Bates, Allan Hallgren, Giovanni Valenti, L. Mirabito, G. Leder, D. Gamba, L. Gorn, C. Walck, S. Gumenyuk, Alexander Lincoln Read, Juan Fuster, Luis Peralta, F. Kapusta, Mingshui Chen, Marek Szczekowski, Borge Svane Nielsen, S. De Brabandere, P. Bruckman, E. Rosso, UCL - SST/IRMP - Institut de recherche en mathématique et physique, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, G, Alemany, R, Allport, P, Almehed, S, Alvsvaag, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, M, Antilogus, P, Apel, W, Arnoud, Y, Åsman, B, Augustin, J, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbiellini, G, Bardin, D, Baroncelli, A, Barring, O, Barrio, J, Bartl, W, Bates, M, Battaglia, M, Baubillier, M, Baudot, J, Becks, K, Begalli, M, Beilliere, P, Belokopytov, Y, Benvenuti, A, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, M, Billoir, P, Bloch, D, Blume, M, Blyth, S, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P, Bosio, C, Bosworth, S, Botner, O, Bouquet, B, Bourdarios, C, Bowcock, T, Bozzo, M, Branchini, P, Brand, K, Brenke, T, Brenner, R, Bricman, C, Brillault, L, Brown, R, Bruckman, P, Brunet, J, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, M, Calvi, M, Camacho Rozas, A, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carrilho, P, Carroll, L, Caso, C, Castillo Gimenez, M, Cattai, A, Cavallo, F, Cerrito, L, Chabaud, V, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cindro, V, Collins, P, Contreras, J, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, H, Crennell, D, Crosetti, G, Cuevas Maestro, J, Czellar, S, Dahl-Jensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, P, Davenport, M, da Silva, W, Defoix, C, Deghorain, A, Delia Ricca, G, Delpierre, P, Demaria, N, de Angelis, A, de Boer, W, de Brabandere, S, de Clercq, C, de la Vaissiere, C, de Lotto, B, de Min, A, de Paula, L, de Saint-Jean, C, Dijkstra, H, di Ciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, K, Dris, M, Dufour, Y, Dupont, F, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, J, Ershaidat, N, Erzen, B, Espirito Santo, M, Falaleev, V, Falk, E, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Filippas, T, Firestone, A, Fischer, P, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, D, Frodesen, A, Fruhwirth, R, Fulda-Quenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gaviilet, P, Gazis, E, Gele, D, Gerber, J, Gerdyukov, L, Gibbs, M, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunnarsson, P, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, F, Hedberg, V, Henriques, R, Hernandez, J, Herquet, P, Herr, H, Hessing, T, Higon, E, Hilke, H, Hill, T, Holmgren, S, Holt, P, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, J, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Karyukhin, A, Katsanevas, S, Katsoufis, E, Keranen, R, Khomenko, B, Khovanski, N, King, B, Kjaer, N, Klein, H, Klovning, A, Kluit, P, Koene, B, Kokkinias, P, Koratzinos, M, Kourkoumelis, C, Kouznetsov, O, Kramer, P, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, J, Lanceri, L, Lane, D, Langefeld, P, Lapin, V, Last, I, Laugier, J, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, C, Leitner, R, Lernoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Loken, J, Lopez, J, Lopez Aguera, M, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Marechal, B, Margoni, M, Marin, J, Mariotti, C, Markou, A, Maron, T, Martinez-Rivero, C, Martinez-Vidal, F, Marti i Garcia, S, Masik, J, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mc Cubbin, M, Mc Kay, R, Mc Nulty, R, Medbo, J, Meroni, C, Meyer, S, Meyer, W, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, W, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, M, Morettini, P, Mueller, H, Mundim, L, Murray, W, Muryn, B, Myatt, G, Naraghi, F, Navarria, F, Navas, S, Nawrocki, K, Negri, P, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, B, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Oberschulte-Beckmann, W, Obraztsov, V, Olshevski, A, Onofre, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Palka, H, Papadopoulou, T, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Perevozchikov, V, Pernegger, H, Perrotta, A, Petridou, C, Petrolini, A, Petrovyck, M, Phillips, H, Piana, G, Pierre, F, Pimenta, M, Pindo, M, Plaszczynski, S, Podobrin, O, Pol, M, Polok, G, Poropat, P, Pozdniakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P, Read, A, Reale, M, Rebecchi, P, Redaelli, N, Regler, M, Reid, D, Renton, P, Resvanis, L, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, E, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann-Kleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, M, Sciolla, G, Scuri, F, Seager, P, Sedykh, Y, Segar, A, Seitz, A, Sekulin, R, Shellard, R, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, A, Sitar, B, Skaali, T, Smadja, G, Smirnov, N, Smirnova, O, Smith, G, Solovianov, O, Sosnowski, R, Souza-Santos, D, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, S, Stavitski, I, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, J, Tchikilev, O, Tilquin, A, Timmermans, J, Tkatchev, L, Todorov, T, Toet, D, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, M, Tyapkin, I, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Valenti, G, Vallazza, E, Vander Velde, C, van Apeldoorn, G, van Dam, P, van Doninck, W, van Eldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, L, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, A, Vrba, V, Wahlen, H, Walck, C, Weierstall, M, Weilhammer, P, Weiser, C, Wetherell, A, Wicke, D, Wickens, J, Wielers, M, Wilkinson, G, Williams, W, Winter, M, Witek, M, Woschnagg, K, Yip, K, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, N, Zito, M, Zontar, D, Zuberi, R, Zucchelli, G, Zumerle, G, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, and LEP (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, ENERGIES, Hadron, DENSITY PROJECTION CHAMBER, IMAGING CHERENKOV DETECTOR, RADIATIVE-CORRECTIONS, LEP, SIMULATION, Z(0), SCATTERING, PROGRAM, SYSTEM, 01 natural sciences, Partícules (Física nuclear), Particle identification, law.invention, Nuclear physics, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Detectors and Experimental Techniques, 010306 general physics, Collider, Instrumentation, DELPHI, Nuclear and High Energy Physic, Physics, Large Hadron Collider, high granularity, Calorimeter (particle physics), particle identification, 010308 nuclear & particles physics, Detector, High Energy Physics::Phenomenology, LARGE ELECTRON POSITRON COLLIDER, FIS/01 - FISICA SPERIMENTALE, PARTICLE PHYSICS, Large Electron–Positron Collider, Physics::Accelerator Physics, Física nuclear, High Energy Physics::Experiment, Lepton
Abstract: DELPHI (DEtector with Lepton, Photon and Hadron Identification) is a detector for e(+)e(-) physics, designed to provide high granularity over a 4 pi solid angle, allowing an effective particle identification, It has been operating at the LEP (Large Electron-Positron) collider at CERN since 1989. This article reviews its performance.
Published: 1996

46. A measurement of the photon structure function F-2(gamma) at an average Q(2) of 12 GeV2/c(4)

Author: B. Tome, P. Antilogus, C. Vander Velde, W. Kucewicz, Marc Winter, C. Troncon, J. H. Koehne, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, M. R. Monge, G.P. Gopal, G. Zumerle, F. Stichelbaut, P. Buschmann, R. Mc Kay, M. Regler, W.S.C. Williams, C. Petridou, R. Keranen, Francisco Matorras, D. Souza-Santos, A. Galloni, Patrick Jarry, B. A. Khomenko, G. Rinaudo, V. Chorowicz, P. Carrilho, E. Vlasov, Dietrich Liko, Luis Peralta, F. Kapusta, P. Poropat, A. Stocchi, Francesco Navarria, Ugo Amaldi, J. Chauveau, I. A. Tyapkin, W. De Boer, E. Zevgolatakos, G. Sciolla, Tiziano Camporesi, A. Passeri, P. Abreu, J. G. Loken, O. Yushchenko, R. Sekulin, I. Lippi, F. Pierre, W. Oberschulte-Beckmann, C. Defoix, P. Langefeld, P. Delpierre, G. Cosme, Norbert Neumeister, P. J. Holt, N. G. Redaelli, J. H. Wickens, D. Bertrand, I. V. Ajinenko, A. J. Camacho Rozas, Antonio Ferrer, Alessandro Petrolini, J. J. Hernandez, D. Z. Toet, P. Siegrist, I. Ripp, R. C. Shellard, A. G. Olshevski, M. Tyndel, Marco Bozzo, D. Gele, Ariella Cattai, U. Gasparini, Juan Abel Barrio, G. Maehlum, B. Muryn, Jose Luis Contreras, H. Foeth, D. W. Lane, P. Kluit, G. Myatt, P. Niss, M. Mazzucato, W. Van Doninck, K. Stepaniak, D. Gillespie, G. Ekspong, M. Gibbs, D. J. Holthuizen, P. Frenkiel, L. Di Ciaccio, Josef Hrubec, A. M. Segar, R. Janik, Phillip Allport, G. Della Ricca, Fares Djama, F. Waldner, T. Maron, J. N. Jackson, P. H. Kramer, Guy Wilkinson, B. Ueberschaer, A. Baroncelli, V. Gracco, P. Van Dam, N. Smirnov, O. Podobrin, H. Furstenau, G. Smadja, N.I. Zimin, J. Baudot, E. Cortina, Lydia Roos, B. Batyunya, L. Gorn, S. Lamblot, J. Van Eldik, Th. D. Papadopoulou, S. Simonetti, C. Martinez-Rivero, J. P. Gerber, P. Jalocha, S-O. Holmgren, T. S. Hill, M. Begalli, C. Kourkoumelis, B. Åsman, Paolo Ronchese, W. Ruckstuhl, Branislav Sitar, Sandra Amato, C. De La Vaissiere, A. De Angelis, P. Collins, Maurizio Canepa, Klaus Hamacher, Mario Sannino, Tiziano Rovelli, B. Marechal, J. P. Tavernet, B. De Lotto, Y. Sacquin, L. G. Tkatchev, M. Gandelman, A. Daum, M. A. Lopez Aguera, Chiara Mariotti, N. J. Kjaer, Bjarne Stugu, H. Wahlen, Evangelos Gazis, P. N. Ratoff, R. Moeller, A. Normand, V. Nikolaenko, R. A. Brenner, M. Reale, J. M. Lopez, Themistocles Bowcock, K. A. Drees, K. Kurvinen, D. Wicke, A. Zalewska, L. Vitale, L. S. Vertogradov, Daniel Bloch, L. K. Resvanis, S. J. Alvsvaag, E. Agasi, T. L. Hessing, D. Radojicic, E. K. Johansson, A. Tilquin, Daniel Treille, H. Klein, M. Bigi, A. M. Wetherell, L. De Paula, Ahmimed Ouraou, D. Vilanova, S. Hahn, Barry King, Francesca Romana Cavallo, A. G. Frodesen, W. T. Meyer, J. Guy, F. Zach, Gueorgui Chelkov, A. Markou, Stéphane Plaszczynski, M. Dracos, E. Spiriti, R. Orava, Imad Baptiste Laktineh, Louis Lyons, Tord Ekelof, A. C. Benvenuti, Tim Adye, Stanislav Nemecek, D. Y. Bardin, Massimo Caccia, Wolfgang Adam, N. Vassilopoulos, J-C. Marin, B. Erzen, R. Gokieli, V. Hedberg, P. B. Renton, R. Frühwirth, L. Chaussard, J. Timmermans, R. Aleksan, S. Squarcia, Jan Ridky, A. Perrotta, M. Berggren, N. Pukhaeva, H. Saarikko, Mogens Dam, P. Gunnarsson, D. C. Fries, T. Tabarelli, G. Borisov, G. Eigen, José Salt, G. D. Alekseev, A. Augustinus, V. V. Lapin, C. Parkes, Spyros Tzamarias, O. Tchikilev, Luc Pape, B. Bouquet, A. Lipniacka, A. Andreazza, B. Loerstad, M. Baubillier, Borge Svane Nielsen, J. Dahm, P. Juillot, P. Rebecchi, M. Krammer, V. Malychev, C. Gaspar, Lucio Cerrito, J.D. Richardson, L. Bugge, E. C. Katsoufis, Demetrios Loukas, H. Pernegger, S. De Brabandere, C. De Clercq, H. Rahmani, G. Tristram, W. J. Murray, Chiara Meroni, Marek Szczekowski, Yu. Belokopytov, Richard Jacobsson, Marta Calvi, P. Lutz, Vaclav Vrba, M. Bonesini, A. Maio, J. Dolbeau, D. Fassouliotis, M. Mc Cubbin, K. Hultqvist, P. Bruckman, C. Zacharatou, J. Garcia, S. Stapnes, G. Crosetti, B. Koene, Vincenzo Canale, Geoffrey Smith, P. Bambade, M. L. Andrieux, Robert S. Brown, Hans Dijkstra, F. Bianchi, P. Privitera, Piotr Zalewski, A. Lopez-Fernandez, F. Ledroit, Jacques Lemonne, Z. Krumstein, A. De Min, E. Rosso, Cristian Stanescu, P. Branchini, Mariusz Witek, M. Gunther, M. Paganoni, Kathy Huet, H. Schneider, P.S.L. Booth, G. W. Van Apeldoorn, A. Pullia, R. Barate, D. Zontar, C. Bourdarios, O. Ullaland, A. Trombini, I. Siccama, G. E. Kalmus, S. Sánchez Navas, A. Klovning, P. Kubinec, Y. Arnoud, U. Mjoernmark, C. Bosio, G. Lenzen, Rupert Leitner, G. Piana, H. Herr, Paolo Morettini, R. Lauhakangas, T. Bolognese, A. Miagkov, L. Ventura, K. Yip, Andrei Nomerotski, C. Caso, P. Negri, V. Obraztsov, H. Palka, A. Seitz, R. Lindner, Y. Lemoigne, C. De Saint-Jean, P. Beilliere, E. Karvelas, H. T. Phillips, Vladimir Cindro, G. Matthiae, Per Jönsson, W. Bonivento, J. W. Lamsa, Matteo Pegoraro, M. Blume, J. Cuevas Maestro, L.J. Carroll, O. Smirnova, P. Weilhammer, Stefano Ragazzi, P. Sponholz, Kerem Cankocak, T. Todorov, L. Jonsson, M. Weierstall, M. Wielers, B. Franek, V. Pozdniakov, F. Barao, F. Dupont, V.A. Uvarov, F. Formenti, F. Cao, F. Verbeure, C. Joram, C. Bricman, A. Sadovsky, R. Mc Nulty, E. Dahl-Jensen, M. Donszelmann, I. Roncagliolo, H. De Boeck, B. Jean-Marie, M. Pimenta, J. Medbo, Fabio Cossutti, W. Hao, O. Barring, K. D. Brand, J. Drees, M. Michelotto, E. Higon, F. Fulda-Quenzer, S. Marti i Garcia, D. Edsall, M. L. Turluer, D. Reid, Danilo Zavrtanik, Jan Krolikowski, Luiz Mundim, W. D. Apel, S. Bosworth, M. Zito, G. Grosdidier, N. N. Khovanski, F. Scuri, W. Bartl, Alessandra Romero, N. Ershaidat, T. Lesiak, V. Bocci, A. Tomaradze, J. P. Laugier, C. Kreuter, M. Karlsson, A. Ruiz, O. Kouznetsov, A. Tsirou, J. Rames, Maria Elena Pol, M. A E Schyns, F. Simonetto, L. Lanceri, Martino Margoni, E. Fokitis, E. I. Rosenberg, E. Graziani, T. B. Skaali, J. M. Brunet, P. Herquet, R. Contri, S. Katsanevas, A. Firestone, C. K. Legan, M. S. Bilenky, T. Burgsmueller, K. Doroba, Goeran Jarlskog, K. Osterberg, V. Lefebure, F. Carena, A. Onofre, A. Buys, J. Sanchez, Ph. Charpentier, M. Houlden, Manolis Dris, D. Crennell, F. Mandl, A. B. Fenyuk, G. C. Zucchelli, Gary John Barker, T. A. Filippas, K. Woschnagg, B. Golob, P. Pages, V. Lepeltier, A. S. Vodopyanov, H. J. Hilke, T. Brenke, R. Ehret, Paolo Checchia, G. Vegni, Ph. Gavillet, T. Moa, Markus Elsing, M. Prest, Allan Hallgren, M. Kaiser, J. MacNaughton, E. Falk, P. Roudeau, M. J. Bates, M. Pernicka, M. Feindt, Giovanni Valenti, L. Mirabito, U. Haedinger, Yu. Sedykh, H. Mueller, P. Billoir, Jesus Marco, P. Paganini, M. Nieuwenhuizen, Flavio Fontanelli, T. Spassov, G. Leder, D. Gamba, R. Strub, A.N. Sisakian, F. Martinez-Vidal, V. Kostioukhine, M. Koratzinos, R. Zuberi, C. Walck, Olga Botner, Krzysztof Korcyl, Josef Strauss, Alexander Lincoln Read, Juan Fuster, G. Transtromer, V. Chabaud, M. Espirito Santo, R. Sosnowski, Carmen García, W. Venus, P. Vincent, F. Naraghi, R. Nicolaidou, I. Kronkvist, B. Dalmagne, P. Kokkinias, Milos Lokajicek, L. Tortora, F. J. Harris, M. Battaglia, Carlos Lacasta, W. Neumann, Krzysztof A. Rybicki, Y. Dufour, P. D. Dauncey, Sandor Czellar, G. Polok, Yu. Gouz, Ernesto Migliore, M. Verlato, W. Trischuk, W. Krupinski, S. C. Blyth, I. Stavitski, Paul Baillon, M. Szeptycka, K. Belous, Z. Hajduk, T. Buran, Maciej Górski, J. P. Engel, M. Davenport, M. V. Castillo Gimenez, P. V. Chliapnikov, N. Demaria, G. Damgaard, F. Parodi, Pavlos Ioannou, Klaus Moenig, W. Da Silva, F. Richard, P. Chochula, C. Matteuzzi, M. Hahn, S. Almehed, R. Chierici, F. Hahn, G. Sajot, J. E. Augustin, H. B. Crawley, L. Brillault, UCL - SST/IRMP - Institut de recherche en mathématique et physique, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, and LEP (IHEF, IoP, FNWI)
Subjects: Particle physics, Photon, Physics and Astronomy (miscellaneous), LEP, DELPHI, hadronic photon structure, Hadron, MONTE-CARLO SIMULATION, Structure (category theory), 01 natural sciences, C-4, Partícules (Física nuclear), JET FRAGMENTATION, law.invention, Q2, Nuclear physics, STRUCTURE-FUNCTION F2, E+E-PHYSICS, QCD, SCATTERING, ORDER, law, 0103 physical sciences, Range (statistics), 010306 general physics, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, Scattering, Emphasis (telecommunications), Detector, Order (ring theory), LARGE ELECTRON POSITRON COLLIDER, Photon structure function, PARTICLE PHYSICS, Mass spectrum, Física nuclear
Abstract: The hadronic photon structure function F_{2}^{gamma} has been measured in the Q^{2} range from 4 to 30~GeV^2/c^{4} and down to x values of order 0.001, using data taken with the DELPHI detector at LEP between 1991 and 1993. A comparison is made with several F_{2}^{gamma} parameterizations with special emphasis on their low x behaviour. A result on the Q^{2} evolution of F_{2}^{gamma} is presented.
Published: 1996

47. Kaon interference in the hadronic decays of the Z(0)

Author: J. P. Gerber, D. Y. Bardin, M. Karlsson, Patrick Jarry, J. Chauveau, G. Rinaudo, T. A. Filippas, M. Regler, P. Kubinec, Clara Troncon, R. Ehret, A. Trombini, M. L. Andrieux, Wojciech Kucewicz, F. Zach, S. S. Meyer, Yu. Sedykh, H. Mueller, S. Katsanevas, A. Passeri, Mario Sannino, M. Gandelman, B. Bouquet, B. Jean-Marie, R. Orava, B. D'Almagne, G. Eigen, A. Firestone, N. Pukhaeva, G. Delia Ricca, L.N. Gerdyukov, A. G. Frodesen, K. D. Brand, Jean-Dominique Durand, H. Wahlen, P. Lutz, N. I. Zimin, J. Dahm, A. Buys, H. Palka, M. S. Bilenky, L.J. Carroll, A. Tonazzo, D. Vilanova, Borge Svane Nielsen, J. Dolbeau, K. H. Becks, A. G. Olshevski, M. Merk, P. Bambade, J-C. Marin, B. Erzen, R. Gokieli, S. De Brabandere, P.S.L. Booth, E. I. Rosenberg, T. Buran, Markus Elsing, E. Vallazza, E. K. Johansson, P.A. Fischer, J. Medbo, C. Vander Velde, Z. Hajduk, Krzysztof Doroba, Lydia Roos, Chiara Meroni, M. Barbi, P. Gunnarsson, Spyros Tzamarias, Steinar Stapnes, C. Martinez-Rivero, F. Stichelbaut, U. Schwickerath, G. A. Chelkov, S. C. Blyth, Peter Kluit, K. Kurvinen, D. Wicke, Javier Sánchez, P. Buschmann, J. Baudot, B. Muryn, R. Mc Kay, G. Wilkinson, J. M. Lopez, P. Delpierre, J. Drees, A. Stocchi, Andrea Perrotta, Maciej Górski, N. Vassilopoulos, Fabio Cossutti, M. Davenport, T. Brenke, Pierre Juillot, J. P. Tavernet, W. De Boer, E. Zevgolatakos, Evangelos Gazis, M. Pimenta, B. A. Khomenko, Francesco Navarria, D. J. Holthuizen, Maria Roberta Monge, A. Zalewska, R. Zuberi, V. Malychev, K. Grzelak, M. Prest, A. Andreazza, A. Galloni, R. Bar ate, S. O. Holmgren, L. S. Vertogradov, R. Keranen, Philippe Charpentier, Francisco Matorras, E. Boudinov, D. Souza-Santos, B. Koene, Olga Botner, J. E. Augustin, G. Sciolla, G. Transtromer, W. Krupinski, G. Myatt, I. Stavitski, Piotr Zalewski, G. Smadja, J. Van Eldik, T. S. Hill, L. Chaussard, Josef Strauss, P. Langefeld, T. Maron, W. Oberschulte-Beckmann, L. Gorn, S. Lamblot, O. Podobrin, R. C. Shellard, Josef Hrubec, G. Grosdidier, P. Weilhammer, T. Lesiak, O. Yushchenko, R. Sekulin, W. T. Meyer, M. Schimmelpfennig, Carmen García, V. Chabaud, A. M. Segar, M. Espirito Santo, W. Venus, Paul Baillon, D. Zontar, Alexander Lincoln Read, M. Szeptycka, Konstantinos Papageorgiou, L. Bugge, Paolo Morettini, B. Tome, H. Foeth, S. Simonetti, Phillip Allport, P. Antilogus, Allan Hallgren, A. J. Camacho Rozas, F. Simonetto, B. Ueberschaer, J. G. Loken, F. Fontanelli, D. Z. Toet, P. Beilliere, P. Siegrist, Z. Krumstein, M. Battaglia, J. W. Lamsa, A. Klovning, U. Mjoernmark, C. Bosio, G. Leder, Y. Sacquin, R. Mc Nulty, W. Neumann, S. Fichet, Kathy Huet, Valeriy Pozdniakov, R. Aleksan, A. De Min, Laurent Mirabito, I. Siccama, G. Sajot, B. Åsman, J. J. Hernandez, I. Kronkvist, Per Jönsson, A. De Angelis, H. T. Phillips, Vladimir Cindro, P. Collins, Maurizio Canepa, R. Janik, M. Tyndel, L. Tortora, M. Blume, F. Barao, C. Mariotti, A. Deghorain, V. Lefebure, J. Garcia, G. Vegni, Sandor Czellar, W. Bonivento, José Salt, Krzysztof Nawrocki, A. N. Sisakian, Kerem Cankocak, F. J. Harris, T. Moa, G. Maehlum, D. Crennell, P. Jalocha, F. Mandl, Daniel Bloch, A. Sadovsky, W. Hao, O. Barring, A. Baroncelli, Wolfgang Adam, U. Amaldi, Klaus Hamacher, G. Polok, Yu. Gouz, P. B. Renton, V. Obraztsov, A. Sokolov, Marcos Dracos, P. Van Dam, D. C. Fries, Carlos Lacasta, P. Seager, L. Di Ciaccio, N. N. Khovanski, W. Bartl, Denis Gelé, I. A. Tyapkin, C. Joram, C. Bricman, Ernesto Migliore, Ahmimed Ouraou, J. N. Jackson, E. Higon, T. Todorov, I. Roncagliolo, S. Bosworth, B. Marechal, F. Scuri, M. Petrovyck, M. Michelotto, V. Perevozchikov, Theodora Papadopoulou, Cristian Stanescu, P. Branchini, H. Schneider, M. Verlato, Marta Calvi, C. De La Vaissiere, E. Cortina, Yu. Belokopytov, M. Zito, J. P. Laugier, T. J. V. Bowcock, A. M. Wetherell, R. Henriques, L. Lanceri, R. A. Brenner, P. Kokkinias, I. Lippi, T. L. Hessing, Geoffrey Smith, C. Kreuter, D. Edsall, Stéphane Plaszczynski, Mariusz Witek, M. Gunther, W.S.C. Williams, G. W. Van Apeldoorn, O. Sahr, Fares Djama, S. Hahn, Francesca Romana Cavallo, R. Moeller, M. Gibbs, J. H. Wickens, A. Tilquin, C. K. Legan, L. Ventura, Alessandra Romero, A. Ruiz, Rupert Leitner, G. Piana, Marco Paganoni, S. Hoorelbeke, Jose Luis Contreras, Paolo Ronchese, V. Chorowicz, E. Agasi, Barry King, K. Yip, L. K. Resvanis, M. A E Schyns, R. Lindner, Y. Lemoigne, P. Herquet, N. Neumeister, G. Matthiae, R. Contri, C. Gaspar, N. J. Kjaer, E. Spiriti, H. J. Hilke, R. Frühwirth, Massimo Caccia, V. V. Lapin, Antonio Onofre, William Trischuk, A. Markou, C. De Clercq, A. B. Fenyuk, G. C. Zucchelli, J. Timmermans, M. Weierstall, Antonio Ferrer, D. Bertini, Vladimir Nikolaenko, S. Todorova, V. Ruhlmann-KIeider, T. Spassov, A. Maio, L. Vitale, F. Martinez-Vidal, D. Radojicic, A. Lipniacka, W. J. Murray, T. Burgsmueller, G. Tristram, A. Katargin, Mogens Dam, Christine Kourkoumelis, E. Dahl-Jensen, R. Strub, Tiziano Rovelli, Manolis Dris, C. Defoix, P. Roudeau, I. Ripp, V. Lepeltier, Juan Fuster, P. Niss, H. Pernegger, Manfred Krammer, F. Fulda-Quenzer, J. M. Brunei, J. Masik, Paolo Checchia, Ph. Gavillet, Tiziano Camporesi, R. Alemany, M. Kaiser, Alberto Benvenuti, E. Graziani, Paolo Privitera, G. Cosme, M. Mazzucato, P. J. Holt, J. MacNaughton, R. Sosnowski, P. Vincent, N. G. Redaelli, Marco Bozzo, R. Lauhakangas, Claire Bourdarios, M. Nieuwenhuizen, P. Frenkiel, P. H. Kramer, C. Walck, Pierre Billoir, M. Novak, A. Normand, C. Weiser, M. Donszelmann, Vaclav Vrba, Hans Dijkstra, Danilo Zavrtanik, Luc Pape, J.D. Richardson, M. A. Winter, Richard Jacobsson, A. Petrolini, B. De Lotto, G. Crosetti, Evgueni Vlasov, H. Herr, L. G. Tkatchev, A. Seitz, Tord Ekelof, J. P. Engel, Y. Arnoud, Paul Dauncey, N. Demaria, G. Damgaard, B. Loerstad, B. Golob, V. Gracco, M. Berggren, M. Y. Castillo Gimenez, Robert S. Brown, Klaus Moenig, Fabrizio Parodi, M. A. Houlden, S. Marti i Garcia, A. Miagkov, Matteo Pegoraro, W. Da Silva, W. K. Van Doninck, F. Richard, P. Chochula, C. Matteuzzi, S. Almehed, R. Chierici, F. Hahn, C. Caso, H. B. Crawley, Luis Peralta, F. Kapusta, A. Pullia, M. Chen, F. Carena, S. Cabrera, G. D. Alekseev, Marek Szczekowski, M. Pernicka, E. Rosso, H. Klein, Jesus Marco, G. Lenzen, K. Osterberg, V. Kostioukhine, M. Koratzinos, M. Mc Cubbin, K. Hultqvist, Rafael Marco, M. J. Bates, M. Bonesini, Toralf Bernhard Skaali, Dietrich Liko, D. Gamba, F. Verbeure, Chariclia Petridou, B. Stugu, S. Gumenyuk, Branislav Sitar, M. Reale, Daniel Treille, M. Bigi, Ugo Gasparini, J. Ridky, P. Bruckman, K. A. Drees, G. Valenti, C. Parkes, Guido Barbiellini, J. Guy, P. Pages, Pascal Paganini, K. Woschnagg, F. Pierre, Tim Adye, E. C. Katsoufis, G. Gopal, Vincent Hedberg, M. Feindt, S. Sánchez Navas, L. De Paula, Stefano Ragazzi, E. Falk, P. Negri, D. W. Lane, F. Formenti, F. Cao, G. Ekspong, P. Sponholz, Göran Jarlskog, L. Mundim, T. Tabarelli, P. N. Ratoff, A. Tomaradze, M. Begalli, Ch. Jarlskog, O. Kouznetsov, R. Nicolaidou, W. D. Apel, Martino Margoni, P. Rebecchi, E. Fokitis, H. Rahmani, G. Borisov, M. Baubillier, V. Canale, Louis Lyons, D. Fassouliotis, Ariella Cattai, A. M. Zaitsev, Alexander Vodopyanov, C. de Saint-Jean, F. Bianchi, Demetrios Loukas, F. Ledroit, Jacques Lemonne, E. Karvelas, O. Ullaland, J. Cuevas Maestro, Oxana Smirnova, M. Wielers, Leif J. Jönsson, K. Karafasoulis, M. L. Turluer, D. Reid, Andrei Nomerotski, Gianni Zumerle, P. Poropat, Andromachi Tsirou, Andre Augustinus, D. Bertrand, Jiri Chudoba, B. Franek, T. Bolognese, M. Pindo, W. Ruckstuhl, P. Abreu, Juan Abel Barrio, Sandra Amato, K. Belous, Imad Baptiste Laktineh, S. Squarcia, H. Saarikko, F. Naraghi, Maria Elena Pol, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, UCL - SST/IRMP - Institut de recherche en mathématique et physique, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, Particle physics, COLLISIONS, Cherenkov detector, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, Interference (wave propagation), 01 natural sciences, JET FRAGMENTATION, law.invention, Nuclear physics, INTERFEROMETRY, PHYSICS, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Z0, 010306 general physics, Cherenkov radiation, DELPHI, kaon correlation in Z0 decays, Physics, 010308 nuclear & particles physics, Detector, Bose–Einstein correlations, LARGE ELECTRON POSITRON COLLIDER, Interferometry, GEV/C, BOSE-EINSTEIN CORRELATIONS, PARTICLE PHYSICS, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: The first measurement of like-sign charged kaon correlations in hadronic decays of the Z$^0$ is presented, based on data collected by the DELPHI detector. The charged kaons are identified by means of ring imaging Cherenkov detectors. A significant enhancement at small values of the four-momentum difference is observed in the ratio of like-sign to unlike-sign KK pairs and in the ratio of like-sign pairs to a simulated reference sample. An update of the measurement of \ksks~interference is also presented. An enhancement is found in the production of pairs of \kos of similar momenta, as compared with a simulated reference sample. The measured Bose-Einstein correlation parameters $\lambda$ and $r$ are similar for charged and neutral kaon pairs. The value of the Bose-Einstein correlation strength $\lambda$ is consistent with unity.
Published: 1996

48. Determination of the average lifetime of b-baryons

Author: P. Herquet, R. Contri, M. Pimenta, T. Burgsmueller, K. Doroba, V. Chabaud, W. Venus, I. Lippi, S. Marti i Garcia, D. Edsall, G. Grosdidier, Norbert Neumeister, M. Houlden, Manolis Dris, S. Cabrera, D. Vilanova, Alessandra Romero, Z. Krumstein, J-C. Marin, Tord Ekelof, B. Erzen, G. Cosme, R. Gokieli, J. H. Wickens, B. Muryn, Marco Paganoni, Jose Luis Contreras, A. Ruiz, M. A E Schyns, A. De Min, A. Trombini, R. Nicolaidou, I. Kronkvist, I. Siccama, O. Podobrin, B. Loerstad, P. Gunnarsson, A. Perrotta, Spyros Tzamarias, O. Tchikilev, Alberto Benvenuti, F. Pierre, A. Onofre, Vincent Hedberg, S-O. Holmgren, O. Yushchenko, R. Sekulin, Chiara Mariotti, O. Smirnova, M. Baubillier, L. Vitale, L. S. Vertogradov, D. W. Lane, D. Radojicic, G. W. Van Apeldoorn, F. Carena, Jan Ridky, J. P. Engel, M. V. Castillo Gimenez, N. Demaria, Robert S. Brown, H. Palka, G. Ekspong, J. W. Lamsa, M. Blume, F. Barao, A. Deghorain, G. Maehlum, E. Higon, S. Bosworth, F. Scuri, A. M. Wetherell, L. Lanceri, A. M. Zaitsev, Alexander Vodopyanov, Stéphane Plaszczynski, R. A. Brenner, G. Damgaard, L. Ventura, C. Joram, C. Bricman, S. Hahn, Francesca Romana Cavallo, K. Yip, F. Bianchi, R. Lindner, T. Tabarelli, E. Agasi, Y. Lemoigne, P. Lutz, B. Golob, Matteo Pegoraro, P. N. Ratoff, Fares Djama, V. Gracco, B. Dalmagne, S. Simonetti, M. Begalli, C. Kourkoumelis, P. Kubinec, William Trischuk, M. Weierstall, Patrick Jarry, G. Rinaudo, P. Rebecchi, Fabrizio Parodi, A. Galloni, A. N. Sisakian, R. Moeller, V. Nikolaenko, R. Henriques, E. Karvelas, M. Gunther, P. Kokkinias, Goeran Jarlskog, Tiziano Rovelli, Jesus Marco, G. Lenzen, R. Strub, J. Masik, G. Borisov, Mogens Dam, J. N. Jackson, Rupert Leitner, G. Piana, G. Matthiae, J. Cuevas Maestro, L. K. Resvanis, Massimo Caccia, Phillip Allport, G. Della Ricca, Th. D. Papadopoulou, J. Strauss, L. Tortora, F. J. Harris, Carlos Lacasta, Krzysztof A. Rybicki, C. De Clercq, P. Juillot, F. Martinez-Vidal, M. Koratzinos, Stefano Ragazzi, B. Åsman, J. Chauveau, M. Battaglia, K. Woschnagg, W. J. Murray, Louis Lyons, R. Aleksan, Luc Pape, B. Tome, P. Antilogus, G. Gopal, L. De Paula, W. Neumann, J. E. Augustin, H. Rahmani, D. Fassouliotis, C. Caso, F. Ledroit, Jacques Lemonne, K. Kurvinen, D. Wicke, Javier Sánchez, Manfred Krammer, W. Oberschulte-Beckmann, R. C. Shellard, Josef Hrubec, A. M. Segar, A. Maio, E. Falk, K. D. Brand, F. Fontanelli, V. Vrba, M. Michelotto, W.S.C. Williams, Dietrich Liko, D. Bertrand, Jiri Chudoba, Lucio Cerrito, J.D. Richardson, Richard Jacobsson, J. J. Hernandez, A. Petrolini, V. Chorowicz, L. G. Tkatchev, O. Ullaland, Leif J. Jönsson, Andrei Nomerotski, José Salt, H. B. Crawley, L. Brillault, Demetrios Loukas, G. Crosetti, Evgueni Vlasov, R. Sosnowski, Chariclia Petridou, P. Vincent, R. Barate, K. Hamacher, W. Da Silva, E. K. Johansson, R. Mc Nulty, M. Pindo, Y. Dufour, E. Cortina, P. Roudeau, U. Mjoernmark, M. J. Bates, W. Ruckstuhl, Steinar Stapnes, F. Formenti, F. Cao, H. Herr, P. Delpierre, P. D. Dauncey, Sandor Czellar, A. Seitz, W. K. Van Doninck, F. Richard, P. Niss, N. Vassilopoulos, Cristian Stanescu, P. Branchini, B. Jean-Marie, P. Beilliere, P. Chochula, C. Matteuzzi, M. Tyndel, Branislav Sitar, N. Ershaidat, Toralf Bernhard Skaali, G. Myatt, C. Kreuter, H. Schneider, H. Wahlen, T. Spassov, G. Leder, S. Almehed, B. Franek, B. De Lotto, R. Lauhakangas, M. Reale, M. S. Bilenky, M. Mazzucato, D. Gamba, L.J. Carroll, Daniel Treille, M. Witek, R. Chierici, F. Hahn, Borge Svane Nielsen, J. Garcia, A. Tomaradze, M. Bigi, G. Polok, A. G. Frodesen, S. De Brabandere, J. Medbo, Fabio Cossutti, P. Weilhammer, W. Kucewicz, V. Malychev, T. Lesiak, F. Verbeure, K. Moenig, Z. Hajduk, P. Bruckman, O. Kouznetsov, Tiziano Camporesi, T. Todorov, M. Wielers, K. Karafasoulis, Marc Winter, C. Parkes, D. J. Holthuizen, Yu. Gouz, F. Simonetto, M. Donszelmann, Maciej Górski, P. J. Holt, M. Davenport, P. Abreu, B. Stugu, Nikita Smirnov, Chiara Meroni, N. G. Redaelli, Danilo Zavrtanik, V. Obraztsov, Marco Bozzo, A. Klovning, V. Lefebure, C. Troncon, M. L. Turluer, D. Reid, D. Crennell, Martino Margoni, F. Mandl, S. Gumenyuk, M. Gandelman, Y. Arnoud, C. Bosio, F. Naraghi, E. Fokitis, E. I. Rosenberg, L. Bugge, M. Feindt, S. Sánchez Navas, A. J. Camacho Rozas, Antonio Ferrer, G. Sajot, Ernesto Migliore, P. V. Chliapnikov, D. Gele, Y. Sacquin, P. Frenkiel, F. Waldner, P. Negri, N.I. Zimin, J. Baudot, H. T. Phillips, Vladimir Cindro, C. Walck, D. Z. Toet, P. Siegrist, M. Verlato, P. Sponholz, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, Ch. Jarlskog, W. D. Apel, F. Stichelbaut, P. Buschmann, R. Mc Kay, A. Andreazza, I. Roncagliolo, J. P. Gerber, Yu.A. Khokhlov, A. Normand, C. Weiser, W. Krupinski, P. Seager, H. J. Hilke, Luiz Mundim, N. N. Khovanski, W. Bartl, Ariella Cattai, Gianni Zumerle, Juan Abel Barrio, P. Poropat, Andromachi Tsirou, Sandra Amato, K. Belous, Juan Fuster, Luis Peralta, F. Kapusta, Mingshui Chen, Ugo Gasparini, K. A. Drees, O. Solovianov, J. Guy, Wolfgang Adam, Yu. Belokopytov, I. Ripp, R. Janik, Guy Wilkinson, E. Dahl-Jensen, A. Firestone, A. Buys, Ph. Charpentier, P. Pages, R. Keranen, J. P. Laugier, T. Brenke, M. Zito, Gueorgui Chelkov, C. Defoix, Imad Baptiste Laktineh, Marek Szczekowski, K. Grzelak, M. Prest, Allan Hallgren, Giovanni Valenti, F. Zach, M. Gibbs, Tim Adye, S. S. Meyer, S. Hoorelbeke, Paolo Ronchese, N. J. Kjaer, S. Squarcia, H. Saarikko, G. Tristram, Francisco Matorras, D. Souza-Santos, Stanislav Nemecek, M. Berggren, N. Pukhaeva, A. Augustinus, E. Rosso, H. Klein, A. Sadovsky, B. A. Khomenko, G. D. Alekseev, A. Baroncelli, A. Markou, A. Stocchi, Francesco Navarria, J. Dahm, C. Vander Velde, K. Osterberg, A. Tonazzo, P. B. Renton, A. G. Olshevski, M. Merk, P. Van Dam, U. Schwickerath, P. Langefeld, Maria Roberta Monge, A. Zalewska, D. C. Fries, W. T. Meyer, T. Maron, Ugo Amaldi, W. De Boer, E. Zevgolatakos, L. Gorn, S. Lamblot, Laurent Mirabito, B. Marechal, E. C. Katsoufis, M. Mc Cubbin, Marta Calvi, M. Barbi, K. Hultqvist, Geoffrey Smith, Rafael Marco, L. Di Ciaccio, G. Sciolla, T. J. V. Bowcock, S. C. Blyth, T. L. Hessing, J. M. Lopez, A. Passeri, M. L. Andrieux, V. Canale, C. De La Vaissiere, G. Smadja, J. Van Eldik, Heinz Pernegger, A. Tilquin, T. S. Hill, M. Schimmelpfennig, I. Stavitski, Pawel Jalocha, Barry King, E. Spiriti, Paul Baillon, D. Zontar, Alexander Lincoln Read, Konstantinos Papageorgiou, R. Frühwirth, J. Timmermans, A. Lipniacka, H. Foeth, B. Ueberschaer, E. Boudinov, B. Koene, A. De Angelis, P. Collins, Maurizio Canepa, A. Pullia, Daniel Bloch, Paolo Morettini, J. G. Loken, Ahmimed Ouraou, C. De Saint-Jean, W. A. Mitaroff, Krzysztof Nawrocki, W. Hao, O. Barring, L.N. Gerdyukov, P. Bambade, P.S.L. Booth, Mario Sannino, T. Buran, Markus Elsing, R. Orava, G. Eigen, B. Bouquet, Maria Elena Pol, S. Katsanevas, M. Karlsson, T. A. Filippas, M. Regler, R. Ehret, Yu. Sedykh, H. Mueller, R. Zuberi, D. Y. Bardin, Piotr Zalewski, Olga Botner, Krzysztof Korcyl, G. Transtromer, Carmen García, I. A. Tyapkin, M. Petrovyck, I. V. Ajinenko, J.-P. Tavernet, V.A. Uvarov, P. Kluit, Lydia Roos, C. Martinez-Rivero, J. Drees, Evangelos Gazis, M. Dracos, L. Chaussard, P. A. Fischer, F. Fulda-Quenzer, J. Dolbeau, M. Bonesini, C. K. Legan, E. Graziani, Kathy Huet, Valeriy Pozdniakov, R. Alemany, J. M. Brunet, T. Bolognese, Per Jönsson, C. Gaspar, W. Bonivento, Kerem Cankocak, G. C. Zucchelli, V. Lepeltier, Paolo Checchia, G. Vegni, Ph. Gavillet, T. Moa, M. Kaiser, J. MacNaughton, Claire Bourdarios, P. Paganini, M. Nieuwenhuizen, P. H. Kramer, Pierre Billoir, M. Szeptycka, M. Chapkin, Hans Dijkstra, P. Privitera, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, UCL - SST/IRMP - Institut de recherche en mathématique et physique, LEP (IHEF, IoP, FNWI), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Particle physics, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, Electron–positron annihilation, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, JET FRAGMENTATION, Nuclear physics, Pion, DELPHI, b-baryon lifetime, impact parameter, proper decay time, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Invariant mass, HEAVY MESONS, E+E-PHYSICS, LAMBDA-B, Z-DECAYS, LEP, 010306 general physics, Nuclear Experiment, Physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, LARGE ELECTRON POSITRON COLLIDER, Baryon, PARTICLE PHYSICS, Production (computer science), High Energy Physics::Experiment, Impact parameter, Particle Physics - Experiment, Lepton
Abstract: The average lifetime of b-baryons has been studied using 3 \times 10^6 hadronic Z^0 decays collected by the DELPHI detector at LEP. Three methods have been used, based on the measurement of different observables: the proper decay time distribution of 206 vertices reconstructed with a \Lambda, a lepton and an oppositely charged pion; the impact parameter distribution of 441 muons with high transverse momentum accompanied by a \mLs in the same jet; and the proper decay time distribution of 125 \Lambda_c-lepton decay vertices with the \Lambda_c exclusively reconstructed through its pK\pi, pK^0 and \mLs3\pi decay modes. The combined result is~:\par \begin{center} \tau(b-baryon) = (1.25^{+0.13}_{-0.11}\ pm0.04(syst)^{+0.03}_{-0. 05}(syst)) ps\par \end{center} where the first systematic error is due to experimental uncertainties and the second to the uncertainties in the modelling of the b-baryon production and semi-leptonic decay. Including the measurement recently published by DELPHI based on a sample of proton-muon vertices, the average b-baryon lifetime is ~:\par \begin{center} \tau(b-baryon) = (1.25\pm0.11(stat)\pm0.05(syst)) ps.\par \end{center}
Published: 1996

49. First study of the interference between initial and final state radiation at the Z resonance

Author: G. Valenti, J. P. Gerber, Piotr Zalewski, F. Pierre, L.N. Gerdyukov, Vincent Hedberg, D. W. Lane, D. J. Holthuizen, G. Ekspong, V.A. Uvarov, P. N. Ratoff, T. Buran, Markus Elsing, S. Simonetti, M. Begalli, F. Zach, S. S. Meyer, F. Naraghi, Y. Sacquin, N. Pukhaeva, J. N. Jackson, M. Feindt, S. Sánchez Navas, P. Negri, O. Yushchenko, R. Sekulin, A. N. Sisakian, J. J. Hernandez, A. Sadovsky, D. Vilanova, J. Dahm, P. Kokkinias, C. K. Legan, J-C. Marin, B. Erzen, R. Gokieli, R. Zuberi, Olga Botner, Andrea Perrotta, R. Barate, Wolfgang Adam, P. Sponholz, Göran Jarlskog, K. Woschnagg, P. Delpierre, T. Moa, G. Maehlum, P. Gunnarsson, Spyros Tzamarias, O. Tchikilev, E. Boudinov, B. Koene, P. Abreu, Ch. Jarlskog, Krzysztof Korcyl, G. Transtromer, Stefano Ragazzi, G. Gopal, I. Lippi, W. D. Apel, Yu. Belokopytov, S. Cabrera, G. Myatt, L. De Paula, S. Marti i Garcia, R. Sosnowski, D. Edsall, G. Grosdidier, Alessandra Romero, A. Ruiz, M. A E Schyns, A. Onofre, R. Mc Nulty, Carmen García, Louis Lyons, D. Gele, P. Vincent, Fares Djama, B. Jean-Marie, Manfred Krammer, F. Formenti, J. H. Wickens, Oxana Smirnova, T. Todorov, E. Falk, M. Tyndel, R. Aleksan, Lydia Roos, M. Wielers, C. Martinez-Rivero, J. Drees, K. Karafasoulis, A. Passeri, William Trischuk, A. Markou, F. Cao, B. Muryn, Marco Paganoni, Jose Luis Contreras, Paolo Morettini, J. G. Loken, C. De Saint-Jean, P. Beilliere, M. Michelotto, M. Novak, Phillip Allport, P. H. Kramer, Pierre Billoir, Norbert Neumeister, R. Moeller, V. Nikolaenko, M. J. Bates, G. Della Ricca, Demetrios Loukas, Th. D. Papadopoulou, A. Galloni, B. Dalmagne, Evangelos Gazis, S. O. Holmgren, M. L. Turluer, D. Reid, J.D. Richardson, L. K. Resvanis, Dietrich Liko, P. Privitera, Chariclia Petridou, L. S. Vertogradov, Juan Abel Barrio, Richard Jacobsson, J. P. Engel, M. V. Castillo Gimenez, M. Bonesini, L. Tortora, F. J. Harris, Carlos Lacasta, Krzysztof A. Rybicki, Massimo Caccia, M. Barbi, O. Podobrin, R. Henriques, Patrick Jarry, G. Rinaudo, J. Salt, L. Vitale, Chiara Mariotti, W. Oberschulte-Beckmann, Borge Svane Nielsen, S. Hahn, S. De Brabandere, Francesca Romana Cavallo, R. C. Shellard, L. Di Ciaccio, Josef Hrubec, Krzysztof Doroba, Chiara Meroni, A. Petrolini, P. Bruckman, Toralf Bernhard Skaali, Branislav Sitar, M. Gunther, T. Spassov, Gianni Zumerle, M. Reale, B. De Lotto, Daniel Treille, M. Bigi, Krzysztof Nawrocki, G. A. Chelkov, P. Juillot, G. Crosetti, Evgueni Vlasov, Sandra Amato, K. Belous, Paul Dauncey, N. Demaria, G. Damgaard, B. Golob, Vaclav Vrba, N. Ershaidat, D. Radojicic, T. J. V. Bowcock, D. Gamba, M. Witek, T. L. Hessing, C. Kreuter, W. Hao, O. Barring, A. Ferrer, Ugo Amaldi, W. De Boer, E. Zevgolatakos, A. Tomaradze, A. M. Segar, C. De Clercq, Z. Krumstein, M. Dracos, L. Chaussard, Peter Kluit, F. Fontanelli, W. J. Murray, Rupert Leitner, G. Piana, A. Klovning, J. Ridky, F. Verbeure, C. Parkes, P. Poropat, Andromachi Tsirou, Andre Augustinus, Hans Dijkstra, C. Gaspar, G. Sciolla, Imad Baptiste Laktineh, S. Squarcia, A. De Min, A. Trombini, G. Smadja, J. Van Eldik, I. Siccama, Heinz Pernegger, G. Matthiae, Klaus Hamacher, V. Gracco, H. Herr, P. A. Fischer, L. G. Tkatchev, C. Defoix, M. L. Andrieux, Y. Arnoud, U. Mjoernmark, C. Bosio, H. T. Phillips, Vladimir Cindro, Cristian Stanescu, P. Branchini, Nikita Smirnov, F. Carena, Tiziano Camporesi, O. Kouznetsov, D. Bertrand, P. Lutz, A. Seitz, G. C. Zucchelli, Jiri Chudoba, H. Schneider, H. Saarikko, A. Baroncelli, M. Berggren, T. S. Hill, M. Schimmelpfennig, E. I. Rosenberg, M. Pindo, F. Fulda-Quenzer, B. Stugu, W. Van Doninck, S. Gumenyuk, R. A. Brenner, G. Cosme, K. Kurvinen, D. Wicke, Javier Sánchez, P. J. Holt, N. G. Redaelli, C. Joram, Marco Bozzo, A. Maio, M. Gandelman, Klaus Moenig, Fabrizio Parodi, E. Cortina, P. Frenkiel, E. Graziani, W. Ruckstuhl, V. Lepeltier, P. Seager, Martino Margoni, T. Tabarelli, M. A. Houlden, J. M. Brunet, H. Foeth, E. Agasi, Paolo Checchia, E. Fokitis, Tiziano Rovelli, J. Masik, Kathy Huet, P. Rebecchi, F. Simonetto, G. D. Alekseev, Valeriy Pozdniakov, R. Alemany, G. Leder, Tord Ekelof, F. Waldner, A. Tonazzo, A. G. Olshevski, M. Merk, T. Bolognese, Per Jönsson, J. Baudot, Luis Peralta, F. Kapusta, M. Pernicka, G. W. Van Apeldoorn, C. Walck, Jesus Marco, G. Lenzen, R. Strub, P. Van Dam, Yu.A. Khokhlov, Luiz Mundim, Ph. Gavillet, A. Normand, C. Weiser, N. N. Khovanski, W. Bartl, M. Kaiser, F. Martinez-Vidal, M. Koratzinos, H. Rahmani, B. Loerstad, P. Herquet, R. Contri, B. Ueberschaer, D. Fassouliotis, Ariella Cattai, A. Pullia, Mingshui Chen, J. Garcia, F. Ledroit, J. Fuster, B. Åsman, U. Schwickerath, J. E. Augustin, Maria Roberta Monge, T. Burgsmueller, W. Bonivento, V. Lefebure, Kerem Cankocak, J. P. Laugier, J. MacNaughton, A. De Angelis, P. Collins, D. Crennell, Claire Bourdarios, P. Paganini, Robert S. Brown, O. Ullaland, Maurizio Canepa, Leif J. Jönsson, M. Nieuwenhuizen, A. Zalewska, G. Borisov, W. T. Meyer, Jacques Lemonne, C. De La Vaissiere, F. Mandl, L. Ventura, K. Yip, M. Pimenta, B. A. Khomenko, M. Baubillier, Achille Stocchi, Daniel Bloch, V. Obraztsov, Francesco Navarria, Manolis Dris, Andrei Nomerotski, Mogens Dam, Ahmimed Ouraou, R. Lindner, P. Roudeau, Y. Lemoigne, C. Caso, A. M. Zaitsev, Alexander Vodopyanov, Laurent Mirabito, Matteo Pegoraro, M. Mc Cubbin, F. Bianchi, Marek Szczekowski, K. Hultqvist, Rafael Marco, P. Langefeld, T. Maron, J. Chauveau, I. A. Tyapkin, B. Franek, E. Rosso, H. Klein, Josef Strauss, V. Chabaud, M. Espirito Santo, W. Venus, K. Osterberg, L. Gorn, A. Tilquin, I. Roncagliolo, M. Petrovyck, I. V. Ajinenko, Alberto Benvenuti, E. Karvelas, H. B. Crawley, M. S. Bilenky, J. Cuevas Maestro, L.J. Carroll, R. Nicolaidou, I. Kronkvist, Luc Pape, J. Medbo, Pawel Jalocha, Barry King, L. Brillault, E. Spiriti, Fabio Cossutti, R. Lauhakangas, Ph. Charpentier, M. Weierstall, P. Weilhammer, T. Lesiak, W. Da Silva, W. A. Mitaroff, Ugo Gasparini, K. A. Drees, O. Solovianov, J. Timmermans, J. Guy, F. Richard, P. Chochula, C. Matteuzzi, A. Lipniacka, S. Almehed, R. Chierici, F. Hahn, Tim Adye, S. C. Blyth, G. Wilkinson, J. M. Lopez, M. Donszelmann, Danilo Zavrtanik, Christine Kourkoumelis, E. Dahl-Jensen, I. Stavitski, Paul Baillon, D. Zontar, P. B. Renton, Alexander Lincoln Read, M. Szeptycka, Konstantinos Papageorgiou, D. C. Fries, B. Marechal, E. C. Katsoufis, Marta Calvi, Vincenzo Canale, Geoffrey Smith, M. Battaglia, W. Neumann, Y. Dufour, Sandor Czellar, G. Polok, Yu. Gouz, G. Sajot, Ernesto Migliore, M. Verlato, W. Krupinski, H. J. Hilke, A. Rybin, E. K. Johansson, B. Tome, P. Antilogus, A. G. Frodesen, Maciej Górski, M. Davenport, Steinar Stapnes, N. Vassilopoulos, P. V. Chliapnikov, W. Kucewicz, W.S.C. Williams, Lucio Cerrito, Marc Winter, V. Chorowicz, H. Wahlen, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, V. Malychev, P. Niss, F. Stichelbaut, P. Buschmann, R. Mc Kay, A. Andreazza, M. Mazzucato, R. Keranen, Francisco Matorras, D. Souza-Santos, L. Bugge, A. J. Camacho Rozas, G. Vegni, D. Z. Toet, P. Siegrist, I. Ripp, R. Janik, P. Kubinec, Clara Troncon, J. P. Tavernet, A. Firestone, A. Buys, K. D. Brand, N. I. Zimin, P. Pages, T. Brenke, M. Zito, K. Grzelak, M. Prest, Allan Hallgren, H. Palka, J. W. Lamsa, M. Blume, A. Deghorain, E. Higon, S. Bosworth, F. Scuri, A. M. Wetherell, L. Lanceri, Stéphane Plaszczynski, M. Gibbs, S. Hoorelbeke, Paolo Ronchese, N. J. Kjaer, G. Tristram, Mario Sannino, S. Lamblot, R. Orava, G. Eigen, B. Bouquet, J. Dolbeau, P. Bambade, P.S.L. Booth, Charles Bricman, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, M. Karlsson, T. A. Filippas, M. Regler, R. Ehret, Yu. Sedykh, H. Mueller, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), ENERGIES, Electron–positron annihilation, media_common.quotation_subject, DEPHI, 01 natural sciences, Resonance (particle physics), Asymmetry, Acoplanarity, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, CHARGE ASYMMETRY, media_common, Physics, Muon, forward-backward asymmetry, mu+mu- final state, 010308 nuclear & particles physics, Generator (category theory), Order (ring theory), Initial and final state radiation, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: The interference between initial and final state radiation in the process \eemm\ at $\sqs \approx \MZ$ has been studied by measuring the forward-backward asymmetry as a function of the acoplanarity angle between the final state muons. The interference is expected to be sensitive to the space-time separation of the initial and final state radiation. The measured asymmetry distribution has been compared to theoretical predictions using the \KORALZ\ generator, with and without Ördalph\ interference. The magnitude of the interference between initial and $ \pm 0.06 $ (syst.) \GeV} . \end{center} has been extracted. The interpretation of this result is discussed. There is an additional uncertainty in the estimate of \GZ\ from as yet uncalculated higher order interference terms. By assuming a value of \GZ\ consistent with the world average, the data were used to estimate the size of these uncalculated corrections. The interference between initial and final state radiation in the process \eemm\ at \sqs \approx \MZ has been studied by measuring the forward-backward asymmetry as a function of the acoplanarity angle between the final state muons. The interference is expected to be sensitive to the space-time separation of the initial and final state radiation. The measured asymmetry distribution has been compared to theoretical predictions using the \KORALZ\ generator, with and without \ordalph\ interference. The magnitude of the interference between initial and final state radiation was found to be of the order predicted and to follow the expected distribution. Using the theoretical predictions, a value of \begin{center} \mbox{ \GZ = 2.50 \pm 0.21 (stat.) \pm 0.06 (syst.) \GeV} . \end{center} has been extracted. The interpretation of this result is discussed. There is an additional uncertainty in the estimate of \GZ\ from as yet uncalculated higher order interference terms. By assuming a value of \GZ\ consistent with the world average, the data were used to estimate the size of these uncalculated corrections.
Published: 1996

50. Search for promptly produced heavy quarkonium states in hadronic Z decays

Author: J. P. Engel, Lucio Cerrito, M. V. Castillo Gimenez, J.D. Richardson, Richard Jacobsson, Paul Dauncey, N. Demaria, Winfried Mitaroff, G. Damgaard, A. Petrolini, Louis Lyons, A. Firestone, R. Aleksan, A. Buys, B. De Lotto, G. Crosetti, Evgueni Vlasov, V. Gracco, M. Berggren, H. Palka, G. Vegni, Demetrios Loukas, F. Stichelbaut, P. Buschmann, B. Muryn, R. Mc Kay, Klaus Moenig, O. Podobrin, Fabrizio Parodi, A. Andreazza, H. Herr, M. A. Houlden, S. Marti i Garcia, P. Pages, T. Brenke, L. G. Tkatchev, M. Zito, K. Grzelak, A. Seitz, M. Prest, C. Gaspar, R. A. Brenner, Allan Hallgren, W. Da Silva, G. C. Zucchelli, R. Keranen, Francisco Matorras, D. Souza-Santos, S. J. Alvsvaag, E. Agasi, R. Lauhakangas, Ph. Charpentier, Dietrich Liko, Chariclia Petridou, W.S.C. Williams, F. Richard, P. Chochula, C. Matteuzzi, S. Almehed, R. Chierici, F. Hahn, H. Foeth, V. Lepeltier, Branislav Sitar, M. Reale, Daniel Treille, B. Dalmagne, M. Gibbs, Milos Lokajicek, M. Bigi, J. Ridky, V. Chorowicz, Mogens Dam, S. Hoorelbeke, Paolo Ronchese, M. Donszelmann, C. Parkes, Marc Winter, Paolo Checchia, Ph. Gavillet, M. Kaiser, B. Ueberschaer, M. Verlato, D. Vilanova, L. Tortora, F. J. Harris, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, M. Karlsson, N. J. Kjaer, Carlos Lacasta, Danilo Zavrtanik, J-C. Marin, B. Erzen, R. Gokieli, Nikita Smirnov, Chiara Meroni, J. E. Augustin, Lydia Roos, D. Edsall, C. Martinez-Rivero, Goeran Jarlskog, G. Grosdidier, R. Sosnowski, P. Vincent, F. Naraghi, J. MacNaughton, C. Troncon, H. Wahlen, A. De Angelis, P. Collins, Alessandra Romero, Maurizio Canepa, A. Ruiz, D. Bertrand, T. A. Filippas, M. A E Schyns, V. Bocci, P. Niss, M. Regler, J. Drees, Gary John Barker, P. Gunnarsson, Claire Bourdarios, P. Paganini, Spyros Tzamarias, O. Tchikilev, G. Tristram, M. Nieuwenhuizen, Piotr Zalewski, Daniel Bloch, R. Ehret, J. P. Gerber, F. Carena, Paolo Privitera, M. Mazzucato, M. Pindo, C. Caso, V. Ruhlmann-Kleider, K. H. Becks, E. Vallazza, K. Woschnagg, E. C. Katsoufis, G. Gopal, A. G. Olshevski, Evangelos Gazis, P. Abreu, Ahmimed Ouraou, D. Gele, O. Yushchenko, R. Sekulin, R. Barate, Yu. Sedykh, D. J. Holthuizen, L. De Paula, Phillip Allport, W. Ruckstuhl, Klaus Hamacher, C. Maocun, G. Della Ricca, Stefano Ragazzi, A. Lopez-Fernandez, P. Bruckman, H. Mueller, M. Pernicka, E. Falk, H. B. Crawley, W. Krupinski, Luis Peralta, F. Kapusta, U. Schwickerath, F. Zach, L. Brillault, J. J. Hernandez, J. W. Lamsa, S. S. Meyer, Y. Sacquin, F. Simonetto, M. Blume, F. Barao, A. Deghorain, T. Moa, P. Jalocha, G. Maehlum, Th. D. Papadopoulou, A. G. Frodesen, T. L. Hessing, M. Dracos, Stanislav Nemecek, P. Kubinec, Ariella Cattai, G. Valenti, Alexander Zaitsev, N. Pukhaeva, Mario Sannino, M. Gandelman, Jesus Marco, G. Lenzen, R. Strub, Juan Abel Barrio, V.A. Uvarov, F. Formenti, F. Cao, J. P. Tavernet, L. Chaussard, G. W. Van Apeldoom, P. A. Fischer, A. Galloni, S. O. Holmgren, Maria Roberta Monge, E. Higon, S. Bosworth, V. Kostioukhine, S. Lamblot, Wolfgang Adam, M. Koratzinos, F. Scuri, B. Golob, Tord Ekelof, T. Buran, Markus Elsing, J. Dahm, R. Moeller, V. Nikolaenko, José Salt, F. Pierre, Fares Djama, W. T. Meyer, R. Orava, Z. Hajduk, P. Poropat, N. Ershaidat, B. Tome, Borge Svane Nielsen, Vincent Hedberg, P. Antilogus, D. W. Lane, L. K. Resvanis, A. M. Wetherell, Marek Szczekowski, W. Oberschulte-Beckmann, L. Lanceri, G. Eigen, Yu. Belokopytov, A. Tomaradze, Maciej Górski, Cristian Stanescu, P. Branchini, B. Bouquet, S. De Brabandere, Jacques Lemonne, Krzysztof Doroba, C. Zacharatou, J. Garcia, E. Rosso, H. Klein, H. Schneider, M. Davenport, J. N. Jackson, Sandra Amato, K. Belous, O. Kouznetsov, R. C. Shellard, Josef Hrubec, Stéphane Plaszczynski, Kathy Huet, G. Ekspong, G. Borisov, G. Leder, Valeriy Pozdniakov, K. D. Brand, M. Baubillier, Achille Stocchi, V. Canale, H. J. Hilke, B. Åsman, K. Osterberg, Antonio Onofre, William Trischuk, A. Markou, N. I. Zimin, A. M. Segar, Laurent Mirabito, R. Zuberi, T. Bolognese, Olga Botner, Martino Margoni, E. Fokitis, Massimo Caccia, R. Henriques, V. Obraztsov, Mariusz Witek, Per Jönsson, Peter Kluit, G. Transtromer, J. Rames, Gueorgui Chelkov, Imad Baptiste Laktineh, P. Herquet, M. Gunther, I. Roncagliolo, P. N. Ratoff, P. Kokkinias, R. Contri, S. Squarcia, H. Saarikko, J. Dolbeau, W. Bonivento, P. Bambade, F. Fontanelli, Alexander Vodopyanov, M. J. Bates, M. Bonesini, Toralf Bernhard Skaali, L. Bugge, A. J. Camacho Rozas, Antonio Ferrer, D. Z. Toet, P. Siegrist, S. Simonetti, Carmen García, V. Lefebure, P. V. Chliapnikov, Tiziano Rovelli, M. Pimenta, P. Juillot, Rupert Leitner, G. Piana, G. Matthiae, E. Cortina, Kerem Cankocak, T. Burgsmueller, D. Gamba, B. A. Khomenko, P.S.L. Booth, Ugo Gasparini, C. K. Legan, M. Begalli, C. Vander Velde, Charles Bricman, M. Feindt, S. Sánchez Navas, F. Bianchi, B. Loerstad, Manolis Dris, I. Ripp, T. Tabarelli, R. Janik, D. Crennell, K. A. Drees, Francesco Navarria, P. Roudeau, T. Spassov, A. Maio, F. Verbeure, P. Langefeld, B. Stugu, Ugo Amaldi, W. De Boer, E. Zevgolatakos, Alberto Benvenuti, P. Rebecchi, S. Gumenyuk, H. Rahmani, Guido Barbiellini, J. Guy, D. Fassouliotis, Z. Krumstein, E. K. Johansson, T. Maron, P. Negri, G. Sciolla, L. Gorn, Tim Adye, Alexander Lincoln Read, A. De Min, A. Trombini, J. Chauveau, Steinar Stapnes, P. H. Kramer, Pierre Billoir, M. Tyndel, E. Karvelas, I. Siccama, G. Sajot, Juan Fuster, J. Cuevas Maestro, P. Sponholz, L. Mundim, F. Ledroit, I. A. Tyapkin, G. D. Alekseev, C. Defoix, F. Fulda-Quenzer, O. Ullaland, Leif J. Jönsson, Robert S. Brown, N. Vassilopoulos, M. Petrovyck, W. Van Doninck, A. Klovning, Y. Arnoud, U. Mjoernmark, C. Bosio, T. Todorov, M. Wielers, O. Smirnova, I. V. Ajinenko, P. Carrilho, Andrei Nomerotski, E. Graziani, M. Battaglia, W. Neumann, H. T. Phillips, Vladimir Cindro, V. Malychev, M. Mc Cubbin, J. M. Brunet, C. Joram, Vaclav Vrba, K. Hultqvist, Hans Dijkstra, A. Miagkov, K. Karafasoulis, F. Dupont, P. Seager, W. D. Apel, Luc Pape, B. Franek, Y. Dufour, M. L. Turluer, Sandor Czellar, D. Reid, L. Di Ciaccio, Jan Krolikowski, N. N. Khovanski, W. Bartl, P. Delpierre, J. P. Laugier, G. Myatt, Patrick Jarry, G. Rinaudo, G. Polok, Yu. Gouz, Gianni Zumerle, Ernesto Migliore, Andromachi Tsirou, S. C. Blyth, G. Wilkinson, J. M. Lopez, E. I. Rosenberg, Andre Augustinus, I. Lippi, K. Kurvinen, D. Wicke, Javier Sánchez, I. Stavitski, Paul Baillon, D. Zontar, M. Szeptycka, Konstantinos Papageorgiou, J. H. Wickens, Marco Paganoni, Jose Luis Contreras, L. Vitale, L. S. Vertogradov, F. Martinez-Vidal, D. Radojicic, H. Pernegger, Manfred Krammer, P. Lutz, M. L. Andrieux, Wojciech Kucewicz, M. S. Bilenky, L.J. Carroll, J. Medbo, Fabio Cossutti, P. Weilhammer, T. Lesiak, A. N. Sisakian, M. Michelotto, B. Koene, C. Kreuter, Paolo Morettini, J. G. Loken, C. De Saint-Jean, P. Beilliere, Josef Strauss, V. Chabaud, M. Espirito Santo, W. Venus, W. Hao, O. Barring, R. Nicolaidou, A. Baroncelli, I. Kronkvist, A. Zalewska, P. Van Dam, C. De La Vaissiere, Themistocles Bowcock, A. Tilquin, Barry King, E. Spiriti, R. Frühwirth, J. Timmermans, A. Lipniacka, A. Sadovsky, P. B. Renton, D. C. Fries, B. Marechal, Marta Calvi, Geoffrey Smith, L. Ventura, K. Yip, R. Lindner, Y. Lemoigne, Andrea Perrotta, M. Weierstall, Christine Kourkoumelis, E. Dahl-Jensen, A. Passeri, G. Smadja, J. Van Eldik, T. S. Hill, M. Schimmelpfennig, R. Mc Nulty, H. De Boeck, B. Jean-Marie, M. Pegoraro, Chiara Mariotti, M.A. Lopez Aguera, S. Hahn, Francesca Romana Cavallo, N. Neumeister, V. V. Lapin, C. De Clercq, W. J. Murray, Tiziano Camporesi, G. Cosme, P. J. Holt, N. G. Redaelli, Marco Bozzo, P. Frenkiel, J. Baudot, C. Walck, A. Normand, C. Weiser, BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, LEP (IHEF, IoP, FNWI), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), UCL - SST/IRMP - Institut de recherche en mathématique et physique, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: Systematic error, Particle physics, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, quarkonium state, Hadron, 01 natural sciences, Partícules (Física nuclear), JET FRAGMENTATION, PHYSICS, Direct production, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, DELPHI, Physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Quarkonium, LARGE ELECTRON POSITRON COLLIDER, branching ratio, Vertex (geometry), PARTICLE PHYSICS, Large Electron–Positron Collider, Decay length, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: A search has been made for direct production of heavy quarkonium states in more than 3 million hadronic Z^{0} decays in the 1991-1994 DELPHI data. Prompt J/\psi, \psi(2S) and \Upsilon candidates have been searched for through their leptonic decay modes using criteria based on the kinematics and decay vertex positions. New upper limits are set at the 90 \% confidence level for {Br( Z^0 \rightarrow \left( Q \bar{Q} \right) X ) / Br( Z^0 \rightarrow \mbox{hadrons})} for various strong production mechanisms of J/\psi and \Upsilon; these range down to 0.9 \times 10^{-4}. The limits are set in the presence of a small excess (\sim 1 \% statistical probability of a background fluctuation) in the sum of candidates from prompt J/\psi, \psi(2S), \Upsilon(1S), \Upsilon(2S) and \Upsilon(3S) relative to the estimated background.
Published: 1996

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