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7. 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

8. 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

9. 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

11. Microstrip gas chambers on implanted substrates

Author

J Cailleret, J.M Levy, Jean-Marie Brom, S Barthe, J Coffin, V Mack, W Geist, E Christophel, R Fang, T Kachelhoffer, A.M Bergtold, J.P Schunck, H Eberlé, A Pallarès, M.H Sigward, and Jean-Charles Fontaine

Subjects
Physics, Nuclear and High Energy Physics, business.industry, chemistry.chemical_element, Biasing, Particle detector, Microstrip, Ion implantation, Townsend discharge, chemistry, Optoelectronics, Irradiation, Detectors and Experimental Techniques, business, Boron, Instrumentation, Sheet resistance
Abstract

We have studied the performance of several Microstrip Gas Chamber (MSGC) prototypes made on standard Desag D263 boron implanted glass. The purpose of the implantation is to reduce the surface resistance. The long term stability of this implantation has been measured under applied bias voltage. Comparative tests have been carried out on prototypes made on implanted and unimplanted detectors under electron ( 90 Sr) and X-ray (8 keV) irradiation. The total dose was approximately 7 mC/cm.

Published
1995

12. Factors influencing the performances of micro-strip gas chambers

Author

H Kettunen, R Fang, E Christophel, J.M Levy, J.P Schunck, T Kachelhoffer, J Coffin, M.H Sigward, D Huss, A.M Bergdolt, H Eberlé, F Osswald, S Barthe, Jean-Marie Brom, A Pallarès, J Cailleret, V Mack, and Jean-Charles Fontaine

Subjects
Physics, Nuclear and High Energy Physics, engineering.material, Cathode, Anode, law.invention, Townsend discharge, Coating, law, Electrode, engineering, Deposition (phase transition), Composite material, Detectors and Experimental Techniques, Instrumentation, Surface finishing, Sheet resistance
Abstract

Damages to MSGCs induced by discharges have been investigated. Optimization of electrode shapes and/or deposition of a protective coating allows the increase of the potential difference between anode and cathode, thus increasing the gain. For prototypes of MSGCs made at the Centre de Recherches Nucleaires, each step of the manufacturing processes was carefully controlled. Results are presented on the influence of cleaning processes on the surface resistance of glass substrates.

Published
1995

13. Interference of Neutral Kaons In the Hadronic Decays of the Z(0)

Author

P Abreu, W Adam, T Adye, E Agasi, I Ajinenko, R Aleksan, G.D Alekseev, A Algeri, P Allport, 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, 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, M Blume, 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, B Bouquet, C Bourdarios, T.J.V Bowcock, M Bozzo, S Braibant, P Branchini, K.D Brand, T Brenke, 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, 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, L Carroll, 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, H Dijkstra, L Di Ciacco, F Djama, 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 Fenyuk, 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, 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, A Grant, F Grard, E Graziani, G Grosdidier, E Gross, 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, T Henkes, R Henriques, J.J Hernandez, J.A Hernando, P Herquet, H Herr, T.L Hessing, I Hietanen, C.O Higgins, E Higon, H.J Hilke, T.S Hill, S.D Hodgson, T Hofmokl, 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, 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, A.V Korytov, V Kostioukhine, C Kourkoumelis, O Kouznetsov, P.H Kramer, M Krammer, C Kreuter, J Krolikowski, I Kronkvist, W Kucewicz, 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, J.M Levy, E Lieb, D Liko, J Lindgren, 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, J Marco, 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, 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, P.E.S Nilsen, P Niss, A Nomerotski, V Obraztsov, A.G Olshevski, R Orava, A Ostankov, 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, 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, C Ronnqvist, E.I Rosenberg, E Rosso, P Roudeau, T Rovelli, W Ruckstuhl, V Ruhlmann-Kleider, A Ruiz, K Rybicki, A Rybin, 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, N Smirnov, O Smirnova, G.R Smith, R Sosnowski, D Souza-Santos, T Spassov, E Spiriti, S Squarcia, 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 Turala, M.-L Turluer, T Tuuva, I.A Tyapkin, M Tyndel, S Tzamarias, B Ueberschaer, S Ueberschaer, O Ullaland, 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, G Wormser, K Woschnagg, A Zaitsev, A Zalewska, D Zavrtanik, E Zevgolatakos, N.I Zimin, M Zito, D Zontar, R Zuberi, G Zumerle, J Zuniga, 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), 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 (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), 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), 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), Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo

Subjects
Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, e+e- annihilation, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, Monte Carlo method, Elementary particle, BOSE-EINSTEIN CORRELATIONS, JET FRAGMENTATION, COHERENCE, PARTICLES, PHYSICS, PAIRS, Interference (wave propagation), 01 natural sciences, Bose-Einstein correlation, Nuclear physics, Particle decay, DELPHI, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Physics, 010308 nuclear & particles physics, Radius, Mass spectrum, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

K0SK0S correlations have been studied in a sample of 717 511 hadronic events collected by the DELPHI detector at LEP during 1992. An enhancement is found in the production of pairs of K0S of similar momenta, as compared with a Monte Carlo simulated reference sample. The measured values for the strength of the correlation and the radius of the emitting source of kaons are λ = 1.13 ± 0.54 (stat) ± 0.23 (syst) and r = 0.90 ± 0.19 (stat) ± 0.10 (syst) fm. This enhancement is consistent with the hypothesis that K0SK0S pairs display an enhancement, regardless of whether they come from a K0K0 or from a K0K0 (K0K0) system.

Published
1994

14. Measurement of time dependent mixing

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, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Bausot, K-H. Becks, M. Begalli, P. Beilliere, K. Belous, 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, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, A. Buys, 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, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, 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, G. Della Ricca, 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, C. De Saint-Jean, 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, D. Fassouliotis, M. Feindt, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, J-L. Fousset, 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, D. Gele, J-P. Gerber, 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, 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, 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, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, W. Krupinski, W. Kucewicz, K. Kulka, K. Kurvinen, C. Lacasta, I. Laktineh, 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, R. Nicolaidou, B.S. Nielsen, V. Nikolaenko, 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, V. Perevozchikov, 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, 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, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, T.B. Skaali, 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-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, 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, F. Zach, 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, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Charge (physics), 01 natural sciences, b-tagging, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Mixing (physics)
Abstract

The time dependent mixing of View the MathML source mesons has been observed by using the correlations between the charge of D∗ mesons and the weighted mean charge of particles in each hemisphere. From a reconstructed D∗± sample corresponding to about 1.7 million hadronic Z0 decays, the mass difference between the two Bd0 mass eigenstates has been measured to be View the MathML source or, converting into eV/c2: Δm = [3.29 ± 0.79 (stat) ± 0.39 (syst.)] 10−4 eV/c2.

Published
1994

15. Evidence for B$^{0}_{s}$ meson production in Z$^0$ decays

Author

P. Abreu, W. Adam, T. Adye, E. Agasi, G.D. Alekseev, A. Algeri, P. Allen, S. Almehed, S.J. Alvsvaag, U. Amaldi, E.G. Anassontzis, A. Andreazza, P. Antilogus, W.-D. Apel, R.J. Apsimon, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K.-H. Becks, C.J. Beeston, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, P. Beltran, D. Benedic, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, P. Borgeaud, G. Borisov, H. Borner, 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, R.C.A. Brown, N. Brummer, J.-M. Brunet, L. Bugge, T. Buran, H. Burmeister, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, F. Cao, F. Carena, L. Caroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, M. Chapkin, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, R. Cirio, M.P. Clara, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, M. Crozon, 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, P. David, W. Da Silva, C. Defoix, D. Delikaris, S. Delorme, P. Delpierre, N. Demaria, 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, A. De Min, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, R. Dzhelyadin, L.-O. Eek, P.A.-M. Eerola, R. Ehret, T. Ekelof, G. Ekspong, A. Elliot Peisert, J.-P. Engel, D. Fassouliotis, M. Feindt, A. Fenyuk, M. Fernandez Alonso, 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, R. Fruhwirth, F. Fulda-Quenzer, K. Furnival, H. Furstenau, J. Fuster, G. Galeazzi, D. Gamba, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, J.-P. Gerber, P. Giacomelli, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, A. Goobar, G. Gopal, M. Gorski, V. Gracco, A. Grant, F. Grard, E. Graziani, G. Grosdidier, E. Gross, P. Grosse-Weismann, 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 Mochenault, W. Hao, F.J. Harris, T. Henkes, 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, R. Holmes, S.-O. Holmgren, D. Holthuizen, P.F. Honore, J.E. Hooper, M. Houlden, J. Hrubec, C. Huet, P.O. Hulth, K. Hultqvist, P. Ioannou, D. Isenhower, P.-S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, D. Johnson, M. Jonker, L. Jonsson, P. Juillot, G. Kalkanis, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, A. Katargin, S. Katsanevas, E.C. Katsoufis, R. Keranen, J. Kesteman, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kiaer, H. Klein, W. Klempt, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Kopf, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, J. Krolikowski, I. Kronkvist, J. Krstic, U. Kruener-Marquis, W. Krupinski, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, J.M. Levy, E. Lieb, D. Liko, E. Lillethun, J. Lindgren, 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. Maltezos, F. Mandl, J. Marco, M. Margoni, J.-C. Marin, A. Markou, T. Maron, S. Marti, L. Mathis, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Meola, C. Meroni, W.T. Meyer, M. Michelotto, I. Mikulec, L. Mirabito, W.A. Mitaroff, G.V. Mitselmakher, U. Mioernmark, 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, B.S. Nielsen, B. Nijjhar, V. Nikolaenko, P.E.S. Nilsen, P. Niss, V. Obraztsov, A.G. Olshevski, R. Orava, A. Ostankov, K. Osterberg, A. Ouraou, M. Paganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, A. Passeri, M. Pegoraro, J. Pennanen, V. Perevozchikov, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, T.E. Pettersen, F. Pierre, M. Pimenta, O. Pingot, M.E. Pol, G. Polok, P. Poropat, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani's, P.N. Ratoff, A.L. Read, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, M. Richardson, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, I. Roncagliolo, P. Ronchese, V. Ronjin, C. Ronnqvist, E.I. Rosenberg, S. Rossi, U. Rossi, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann, 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, R. Sekulin, M. Sessa, G. Sette, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, T.B. Skaali, G. Skjevling, G. Smadja, N. Smirnov, G.R. Smith, R. Sosnowski, T.S. Spassoff, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, S. Tavernier, O. Tchikilev, G.E. Theodosiou, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, O. Toker, A. Tomaradze, E. Torassa, L. Tortora, M.T. Trainor, D. Treilli, U. Trevisan, 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, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, L.S. Vertogradov, D. Vilanova, P. Vincent, N. Vishnevsky, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, G. Voulgaris, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Wayne, A. Wehr, M. Weierstall, P. Weilhammer, J. Werner, A.M. Wetherell, J.H. Wickens, J. Wikne, G.R. Wilkinson, W.S.C. Williams, M. Winter, D. Wormald, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, G. Zhang, N.I. Zimin, M. Zito, R. Zuberi, R. Zukanovich Funchal, G. Zumerle, J. Zuniga, 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), 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, 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), Aix Marseille Université (AMU)-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)-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), 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
Nuclear and High Energy Physics, Particle physics, Meson production, Meson, LUND MONTE-CARLO, Electron–positron annihilation, Nuclear Theory, Hadron, 01 natural sciences, COLLIDER, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], B meson, Nuclear Experiment, 010306 general physics, Physics, Muon, Z0 DECAYS, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Transverse momentum, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment, Production rate
Abstract

Seven unambiguous events out of a sample of 270 000 Z0 decays, contain in tile same jet a D(s) meson and a muon at large transverse momentum relative to the et axis. These events are direct evidence for B(s)0 meson production in hadronic Z0 decays. The production rate of these events, relative to all hadronic Z0 decays is ( 18 +/- 8) x 10(-5) this number including the relevant branching fractions of the B(s)0 and D(s). The value of the B(s)0 meson lifetime relative to the average B meson lifetime is measured to be 0.8 +/- 0.4.

Published
1992

16. NO/char reactions at pulverized coal flame conditions

Author

Adel F. Sarofim, L.K. Chan, J.M. Beér, and J.M. Levy

Subjects
Chemical kinetics, chemistry.chemical_classification, chemistry.chemical_compound, chemistry, Chemisorption, Inorganic chemistry, chemistry.chemical_element, Compounds of carbon, Char, Atmospheric temperature range, Oxygen, Chemical reaction, Carbon monoxide
Abstract

The effective rate of the NO/char reaction measured over the temperature range 1250 to 1750 K has been found to be given by (d NO/dt)=4.18×104 exp (−34.70 K cal/RT) AEPNO moles/sec where AE is the external surface area of the char in m2/gm, and PNO is in atmospheres. The rate of the reaction is found to be retarded by water vapor and enhanced by CO by amounts that decrease with increasing temperature. This is consistent with a hypothesis that the NO/C reaction is retarded by the formation of a chemisorbed layer which can be removed by reaction with CO. Support for this hypothesis is provided by transient experiments which show that, at low temperatures, NO reacts with carbon to form N2 and a chemisorbed oxygen layer, and that the chemisorbed oxygen decomposes at higher temperatures to form CO or reacts with CO to form CO2.

Published
1981

17. Investigations of the Uses of Modifiers in Supercritical Fluid Chromatography

Author

J.M. Levy and W.M. Ritchey

Subjects
Chromatography, Chemistry, Supercritical fluid chromatography, Organic chemistry, General Medicine, Analytical Chemistry
Abstract

Diminution du temps de retention d'aromatiques condenses, separation de composes azo non solubles dans CO 2 pur, etc...

Published
1986

18. Higher hydrocarbon combustion: 2. Fuel-rich C1C2 mechanism

Author

Adel F. Sarofim and J.M. Levy

Subjects
chemistry.chemical_classification, Reaction mechanism, Atmospheric pressure, General Chemical Engineering, Radical, Inorganic chemistry, General Physics and Astronomy, Energy Engineering and Power Technology, Thermodynamics, General Chemistry, Hydrogen atom, Combustion, Methane, chemistry.chemical_compound, Fuel Technology, Hydrocarbon, chemistry, Acetylene
Abstract

A method is presented for using a measured hydrogen atom profile as a probe of reaction details, and for refining the reaction mechanism by imposing the constraint that the hydrogen atom profile be correctly calculated. A reaction mechanism is derived for the fuel-rich, atmospheric pressure combustion of an acetylene/methane mixture at 2000K in the postflame zone of a rich (φ = 1.66) ethylene/air flame. The resulting chain-branched mechanism has the characteristic of, on net, forming free radicals in the hydrocarbon oxidative reaction sequence. The implications of this result are discussed in the context of radical scavenging by hydrocarbons and the system approach to equilibrium.

Published
1983

19. Higher hydrocarbon combustion 1. Primary process in fuel-rich acetylene combustion

Author

J.M. Levy

Subjects
chemistry.chemical_classification, Primary (chemistry), General Chemical Engineering, General Physics and Astronomy, Energy Engineering and Power Technology, Ketene, General Chemistry, Photochemistry, Combustion, Methane, chemistry.chemical_compound, Fuel Technology, Hydrocarbon, chemistry, Acetylene, Chemical engineering, Yield (chemistry), Scientific method
Abstract

Computational results are presented supporting the suggestion that the primary process in fuel-rich acetylene combustion is reaction with OH to yield ketene, and that acetylene does not decay, primarily, through the methane family. The methodology for modeling higher hydrocarbon decay is discussed.

Published
1982

20. C1 and C2 chemistry in rich mixture, ethylene/air flames

Author

Adel F. Sarofim, J.P. Longwell, B.R. Taylor, and J.M. Levy

Subjects
chemistry.chemical_classification, Ethylene, Hydrogen, Inorganic chemistry, Analytical chemistry, chemistry.chemical_element, Combustion, Methane, Adiabatic flame temperature, chemistry.chemical_compound, Hydrocarbon, chemistry, Acetylene, Adiabatic process
Abstract

Decay profiles of methane, acetylene, and hydrogen atoms are modeled in the post flame zone of four fuel-rich, atmospheric presure ethylene/air flat flames, at fuel equivalence ratios of 1.71 to 1.83 and adiabatic flame temperatures of 1992 to 2126 K. Chain branching is required in the fuel-rich hydrocarbon combustion mechanism for the simulation of hydrogen atom measurements. The mechanism of hydrocarbon suppression of free radical overshoot is discussed.

Published
1982

21. Direct determination of oxygenated compounds in complex mixtures by capillary gas chromatography

Author

L.E. Wolfram, J.M. Levy, and J.A. Yancey

Subjects
Capillary electrochromatography, Chromatography, Chemistry, Elution, Organic Chemistry, General Medicine, Biochemistry, Analytical Chemistry, chemistry.chemical_compound, Adsorption, Phase (matter), Selectivity, Derivatization, Chromatography column, Oxygenate
Abstract

A method has been developed for the direct determination of oxygenated compounds in complex mixtures by capillary gas chromatography on a fused-silica column, coated with a polar stationary phase. Compounds identified and determined without derivatization include carboxylic acids, primary alcohols, n-aldehydes, methyl esters and ketones. The chromatographic system consists of a fused-silica capillary column, 50 meters in length, with a coating of AT-1000 (FFAP). The selectivity of this phase enables the separation of the oxygenated compounds from the hydrocarbons in these complex mixtures and distributes them by molecular weight into characteristic peak envelopes for each class of oxygenate. The free carboxylic acids peaks elute with minimal tailing and adsorption.

Published
1983

22. Direct observation of rotational energy transfer in ammonia by time-resolved infrared—microwave double resonance

Author

Jian-Sheng Wang, Jeffrey I. Steinfeld, Stephen G. Kukolich, and J.M. Levy

Subjects
Chemistry, Infrared, General Physics and Astronomy, Rotational transition, Rotational–vibrational spectroscopy, Laser, Rotational energy, law.invention, Ammonia, chemistry.chemical_compound, law, Physical and Theoretical Chemistry, Atomic physics, Ground state, Microwave
Abstract

An N 2 O laser is used to pump the ground vibrational state (8,7) inversion doublet of 14 NH 3 while simultaneously monitoring other ground state doublets. Time-resolved rotational energy transfer signals are observed in accordance with known selection values. Absolute rates of rotational energy transfer processes are estimated.

Published
1973

23. Microwave transient nutation measurements of relaxation in OCS and NH3

Author

Jian-Sheng Wang, J.M. Levy, J. I. Steinfeld, and Stephen G. Kukolich

Subjects
Chemistry, Bloch equations, Nutation, Torr, Analytical chemistry, General Physics and Astronomy, Rotational spectroscopy, Physical and Theoretical Chemistry, Atomic physics, Microwave
Abstract

The phenomenological Bloch equations are solved for transient nutation in optical two-level systems, using the Feynman—Vernon—Hellwarth representation. The resulting solutions display an exponentially damped oscillatory behavior, from which the relaxation times T1 and T2 may be derived. Transient nutation signals were observed using time-resolved microwave spectroscopy with rapid switching of applied Stark fields. Observed collision relaxation rates are (5.25 ± 0.50) MHz/torr for OCS—OCS, (1.96 ± 0.30) MHz/torr for OCS—He and (1.67 ± 0.20) MHz/torr for OCS—Ar. For NH3NH3 relaxation the rate is (23.2 ± 3.5) MHz/torr for the (8,7) inversion line.

Published
1973

25. Identification of a familial robertsonian translocation t(13q14q) by means of thermic moderated denaturation

Author

C. Stoll and J.M. Levy

Subjects
Male, Protein Denaturation, Adolescent, Robertsonian translocation, Chromosomal translocation, Biology, medicine.disease_cause, Intellectual Disability, Methods, Genetics, medicine, Humans, Denaturation (biochemistry), Lymphocytes, Obesity, Cells, Cultured, Genetics (clinical), Chromosome Aberrations, Molecular medicine, Human genetics, Karyotyping, Female, Identification (biology), Chromosomes, Human, 13-15, Protein Binding
Abstract

A familial D≈D translocation was identified as a translocation t(13q14q) by means of a thermic moderated denaturation banding technique.

Published
1973

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