251. Observation of a first $\nu_\tau$ candidate in the OPERA experiment in the CNGS beam
- Author
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Agafonova, N. a, Aleksandrov, A. b, Altinok, O. c, Ambrosio, M. d, Anokhina, A. e, Aoki, S. f, Ariga, A. g, Ariga, T. g, Autiero, D. h, Badertscher, A. i, Bagulya, A. b, Bendhabi, A. j, Bertolin, A. k, Besnier, M. l, Bick, D. m, Boyarkin, V. a, Bozza, C. n, Brugière, T. h, Brugnera, Riccardo, Ko, R., Brunet, F. k, Brunetti, Hp, G., Buontempo, S. d, Cazes, A. h, Chaussard, L. h, Chernyavsky, M. b, Chiarella, V. q, Chon, Sen, N. r, Chukanov, A. s, Ciesielski, R. k., Dal, Corso, Dk, F., D'Ambrosio, N. t, Declais, Y. h, del Amo Sanchez, P. l., Lellis, De, Du, G., Serio, De, M. v., Capua, Di, F. d., Crescenzo, Di, Du, A., Ferdinando, Di, D. w., Marco, Di, N. x., Giovanni, Di, A. t, Dmitrievsky, S. s, Dracos, M. r, Duchesneau, D. l, Dusini, S. k, Dzhatdoev, T. e, Ebert, J. m, Egorov, O. y, Enikeev, R. a, Ereditato, A. g, Esposito, L. S. i, Favier, J. l, Ferber, T. m, Fini, R. A. v, Frekers, D. z, Fukuda, Aa, T., Galkin, V. e, Garfagnini, Alberto, Ko, A., Giacomelli, Pw, G., Giorgini, Pw, M., Goldberg, Ab, J., Göllnitz, C. m, Golubkov, D. y, Goncharova, L. b, Gornushkin, Y. s, Grella, G. n, Grianti, Qac, F., Guler, A. M. c, Gustavino, C. t, Hagner, C. m, Hamada, Aa, K., Hara, T. f, Hierholzer, M. m, Hoshino, Ieva, M. v, Ishida, Ad, H., Ishiguro, Jakovcic, Af, K., Jollet, C. r, Juget, F. g, Kamiscioglu, M. c, Kawada, J. g, Kazuyama, M. q, Kim, S. H., Ae, Kimura, Ad, M., Kitagawa, Aa, N., Klicek, Af, B., Knuesel, J. g, Kodama, Ag, K., Komatsu, Aa, M., Kose, Ko, U., Kreslo, I. g, Kubota, Aa, H., Lazzaro, C. i, Lenkeit, J. m, Lippi, I. k, Ljubicic, Af, A., Longhin, Lutter, G. g, Malgin, A. a, Mandrioli, G. w, Mannai, K. j, Marotta, A. d, Marteau, J. h, Matsuo, Ad, T., Matveev, V. a, Mauri, Pw, N., Medinaceli, E. w, Meisel, F. g, Meregaglia, A. r, Migliozzi, P. d, Mikado, Ad, S., Miyamoto, Aa, S., Monacelli, P. x, Morishima, Moser, U. g, Muciaccia, Vah, M. T., Naganawa, Naka, Nakamura, Nakano, Nakatsuka, Aa, Y., Naumov, D. s, Nikitina, V. e, Niwa, Nonoyama, Ogawa, Olchevsky, A. s, Omura, Orlova, G. b, Osedlo, V. e, Paniccia, M. q, Paoloni, A. q, Park, B. D., Ae, Park, I. G. u, Pastore, Daf, A., Patrizii, L. w, Pennacchio, E. h, Pessard, H. b., Pilipenko, V. z, Pistillo, C. g, Polukhina, N. b, Pozzato, M. f, Pretzl, K. g, Publichenko, P. e, Pupilli, F. x, Repellin, J. P., Am, Rescigno, R. n, Roganova, T. e, Rokujo, H. f, Romano, G. d, Rosa, Ai, G., Rostovtseva, I. y, Rubbia, A. i, Russo, Ryasny, V. a, Ryazhskaya, O. a, Sakatani, Sato, Aa, O., Aj, Y., Schembri, A. t, Schmidt, Parzefall, W. m, Schroeder, Ak, H., Scotto, Lavina, L. d, Sheshukov, A. s, Shibuya, Simone, Vah, S., Sioli, Sirignano, Chiara, Sirri, G. w, Song, J. S., Ae, Spinetti, M. q, Stanco, L. k, Starkov, N. b, Stipcevic, Af, M., Strauss, T. i, Strolin, Du, P., Suzuki, Takahashi, Tenti, Terranova, F. q, Tezuka, Aj, I., Tioukov, V. d, Tolun, P. c, Trabelsi, A. j, Tran, T. h, Tufanli, S. c, Vilain, P. h, Vladimirov, M. b, Votano, L. g, Vuilleumier, J. L. g, Wilquet, Al, G., Wonsak, B. m, Yakushev, V. a, Yoon, C. S., Ae, Yoshida, Aa, J., Yoshioka, Zaitsev, Y. y, Zemskova, S. s, Zghiche, A. l, Zimmermann, R. m., 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 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 OPERA
- Subjects
Nuclear and High Energy Physics ,Particle physics ,Oscillations ,Physics::Instrumentation and Detectors ,01 natural sciences ,7. Clean energy ,High Energy Physics - Experiment ,Nuclear physics ,CNGS ,Neutrino ,Appearance ,Tau ,OPERA ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,neutrini ,010306 general physics ,Neutrino oscillation ,Nuclear Experiment ,Alte energie ,Charged current ,Physics ,Large Hadron Collider ,neutrino ,oscillations ,appearance ,tau ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Physique atomique et nucléaire ,Massless particle ,Neutrino detector ,Physique des particules élémentaires ,cngs ,opera ,High Energy Physics::Experiment ,Event (particle physics) ,Particle Physics - Experiment ,Beam (structure) - Abstract
The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode through the study of the νμ→ντ channel. The hybrid apparatus consists of an emulsion/lead target complemented by electronic detectors and it is placed in the high energy long-baseline CERN to LNGS beam (CNGS) 730 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out in 2008 and 2009. After a brief description of the beam, the experimental setup and the procedures used for the analysis of the neutrino events, we describe the topology and kinematics of a first candidate ?charged-current event satisfying the kinematical selection criteria. The background calculations and their cross-check are explained in detail and the significance of the event is assessed. © 2010 Elsevier B.V., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
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- 2010