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Hard-photon production at $\sqrt{s}$ = 161 and 172 GeV at LEP
Authors :
Acciarri, M Adriani, O Aguilar-Benítez, M Ahlen, S P Alcaraz, J Alemanni, G Allaby, James V Aloisio, A Alverson, G Alviggi, M G Ambrosi, G Anderhub, H Andreev, V P Angelescu, T Anselmo, F Arefev, A Azemoon, T Aziz, T Bagnaia, P Baksay, L Banerjee, S Banerjee, Sw Banicz, K Barczyk, A Barillère, R Barone, L Bartalini, P Baschirotto, A Basile, M Battiston, R Bay, A Becattini, F Becker, U Behner, F Berdugo, J Berges, P Bertucci, B Betev, B L Bhattacharya, S Biasini, M Biland, A Bilei, G M Blaising, J J Blyth, S C Bobbink, Gerjan J Böck, R K Böhm, A Boldizsar, L Borgia, B Bourilkov, D Bourquin, Maurice Braccini, S Branson, J G Brigljevic, V Brock, I C Buffini, A Buijs, A Burger, J D Burger, W J Busenitz, J K Button, A M Cai, X D Campanelli, M Capell, M Cara Romeo, G Carlino, G Cartacci, A M Casaus, J Castellini, G Cavallari, F Cavallo, N Cecchi, C Cerrada-Canales, M Cesaroni, F Chamizo-Llatas, M Chang, Y H Chaturvedi, U K Chekanov, S V Chemarin, M Chen, A Chen, G Chen, G M Chen, H F Chen, H S Chéreau, X J Chiefari, G Chien, C Y Cifarelli, Luisa Cindolo, F Civinini, C Clare, I Clare, R Cohn, H O Coignet, G Colijn, A P Colino, N Commichau, V Costantini, S Cotorobai, F de la Cruz, B Csilling, Akos Dai, T S D'Alessandro, R De Asmundis, R Degré, A Deiters, K Della Volpe, D Denes, P De Notaristefani, F DiBitonto, Daryl Diemoz, M Van Dierendonck, D N Di Lodovico, F Dionisi, C Dittmar, Michael Dominguez, A Doria, A Dova, M T Duchesneau, D Duinker, P Durán, I Dutta, S Easo, S Efremenko, Yu V El-Mamouni, H Engler, A Eppling, F J Erné, F C Ernenwein, J P Extermann, Pierre Fabre, M Faccini, R Falciano, S Favara, A Fay, J Fedin, O Felcini, Marta Fenyi, B Ferguson, T Ferroni, F Fesefeldt, H S Fiandrini, E Field, J H Filthaut, Frank Fisher, P H Fisk, I Forconi, G Fredj, L Freudenreich, Klaus Furetta, C Galaktionov, Yu Ganguli, S N García-Abia, P Gau, S S Gentile, S Gheordanescu, N Giagu, S Goldfarb, S Goldstein, J Gong, Z F Gougas, Andreas Gratta, Giorgio Grünewald, M W Gupta, V K Gurtu, A Gutay, L J Hartmann, B Hasan, A Hatzifotiadou, D Hebbeker, T Hervé, A Van Hoek, W C Hofer, H Hong, S J Hoorani, H Hou, S R Hu, G Innocente, Vincenzo Jenkes, K Jin, B N Jones, L W de Jong, P Josa-Mutuberria, I Kasser, A Khan, R A Kamrad, D Kamyshkov, Yu A Kapustinsky, J S Karyotakis, Yu Kaur, M Kienzle-Focacci, M N Kim, D Kim, D H Kim, J K Kim, S C Kim, Y G Kinnison, W W Kirkby, A Kirkby, D Kirkby, Jasper Kiss, D Kittel, E W Klimentov, A König, A C Kopp, A Korolko, I Koutsenko, V F Krämer, R W Krenz, W Kunin, A Ladrón de Guevara, P Laktineh, I Landi, G Lapoint, C Lassila-Perini, K M Laurikainen, P Lebeau, M Lebedev, A Lebrun, P Lecomte, P Lecoq, P Le Coultre, P Le Goff, J M Leiste, R Leonardi, E Levchenko, P M Li Chuan Lin, C H Lin, W T Linde, Frank L Lista, L Liu, Z A Lohmann, W Longo, E Lu, W Lü, Y S Lübelsmeyer, K Luci, C Luckey, D Luminari, L Lustermann, W Ma Wen Gan Maity, M Majumder, G Malgeri, L Malinin, A Maña, C Mangeol, D J J Mangla, S Marchesini, P A Marin, A Martin, J P Marzano, F Massaro, G G G McNally, D McNeil, R R Mele, S Merola, L Meschini, M Metzger, W J Von der Mey, M Mi, Y Mihul, A Van Mil, A J W Mirabelli, G Mnich, J Molnár, P Monteleoni, B Moore, R Morganti, S Moulik, T Mount, R Müller, S Muheim, F Muijs, A J M Nahn, S Napolitano, M Nessi-Tedaldi, F Newman, H Niessen, T Nippe, A Nisati, A Nowak, H Oh, Yu D Opitz, H Organtini, G Ostonen, R Palomares, C Pandoulas, D Paoletti, S Paolucci, P Park, H K Park, I H Pascale, G Passaleva, G Patricelli, S Paul, T Pauluzzi, M Paus, C Pauss, Felicitas Peach, D Pei, Y J Pensotti, S Perret-Gallix, D Petersen, B Petrak, S Pevsner, A Piccolo, D Pieri, M Pinto, J C Piroué, P A Pistolesi, E Plyaskin, V Pohl, M Pozhidaev, V Postema, H Produit, N Prokofev, D Prokofiev, D O Rahal-Callot, G Raja, N Rancoita, P G Rattaggi, M Raven, G Razis, P A Read, K Ren, D Rescigno, M Reucroft, S Van Rhee, T Riemann, S Riles, K Robohm, A Rodin, J Roe, B P Romero, L Rosier-Lees, S Rosselet, P Van Rossum, W Roth, S Rubio, Juan Antonio Ruschmeier, D Rykaczewski, H Salicio, J Sánchez, E Sanders, M P Sarakinos, M E Sarkar, S Sassowsky, M Schäfer, C Shchegelskii, V Schmidt-Kärst, S Schmitz, D Schmitz, P Scholz, N Schopper, Herwig Franz Schotanus, D J Schwenke, J Schwering, G Sciacca, C Sciarrino, D Servoli, L Shevchenko, S Shivarov, N Shoutko, V Shukla, J Shumilov, E Shvorob, A V Siedenburg, T Son, D Sopczak, André Smith, B Spillantini, P Steuer, M Stickland, D P Stone, A Stone, H Stoyanov, B Strässner, A Strauch, K Sudhakar, K Sultanov, G G Sun, L Z Susinno, G F Suter, H Swain, J D Tang, X W Tauscher, Ludwig Taylor, L Ting, Samuel C C Ting, S M Tonutti, M Tonwar, S C Tóth, J Tully, C Tuchscherer, H Tung, K L Uchida, Y Ulbricht, J Uwer, U Valente, E Van de Walle, R T Vesztergombi, G Vetlitskii, I Viertel, Gert M Vivargent, M Völkert, R Vogel, H Vogt, H Vorobev, I Vorobyov, A A Vorvolakos, A Wadhwa, M Wallraff, W Wang, J C Wang, X L Wang, Z M Weber, A Wittgenstein, F Wu, S X Wynhoff, S Xu, J Xu, Z Z Yang, B Z Yang, C G Yao, X Y Ye, J B Yeh, S C You, J M Zalite, A Zalite, Yu Zemp, P Zeng, Y Zhang, Z Zhang, Z P Zhou, B Zhu, G Y Zhu, R Y Zichichi, Antonino Ziegler, F 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
Source :
Physics Letters B, Physics Letters B, Elsevier, 1997, 413, pp.159-166. ⟨10.1016/S0370-2693(97)01081-2⟩
Publication Year :
1997
Publisher :
HAL CCSD, 1997.
Abstract
We have studied the process $e^+e^-{\rightarrow}\rm n {\gamma}$ $(\rm n{\ge}2)$ at centre-of-mass energies of 161.3 GeV and 172.1 GeV. The analysis is based on a sample of events collected by the L3 detector in 1996 corresponding to total integrated luminosities of 10.7 ${\rm pb^{-1}}$ and 10.1 ${\rm pb^{-1}}$ respectively. The observed rates of events with two and more photons and the characteristic distributions are in good agreement with the Standard Model expectations. This is used to set lower limits on contact interaction energy scale parameters, on the QED cut-off parameters and on the mass of excited electrons.
Details
Language :
English
ISSN :
03702693
Database :
OpenAIRE
Journal :
Physics Letters B, Physics Letters B, Elsevier, 1997, 413, pp.159-166. ⟨10.1016/S0370-2693(97)01081-2⟩
Accession number :
edsair.dedup.wf.001..92310ccb2e8fde0649c7abdebfce8cf4