CERN Accelerating science

Article
Report number arXiv:1407.3513
Title Observation of nu_tau appearance in the CNGS beam with the OPERA experiment
Author(s)

Agafonova, N. (Moscow, INR) ; Aleksandrov, A. (INFN, Naples) ; Anokhina, A. (Moscow State U.) ; Aoki, S. (Kobe U.) ; Ariga, A. (Bern U.) ; Ariga, T. (Bern U.) ; Asada, T. (Nagoya U.) ; Bender, D. (Middle East Tech. U., Ankara) ; Bertolin, A. (INFN, Padua) ; Bozza, C. (INFN, Salerno) ; Brugnera, R. (INFN, Padua ; Padua U.) ; Buonaura, A. (INFN, Naples ; Naples U.) ; Buontempo, S. (INFN, Naples) ; Buttner, B. (Hamburg U., Inst. Theor. Phys. II) ; Chernyavsky, M. (Lebedev Inst.) ; Chukanov, A. (Dubna, JINR) ; Consiglio, L. (INFN, Naples) ; D'Ambrosio, N. (Gran Sasso) ; De Lellis, G. (INFN, Naples ; Naples U.) ; De Serio, M. (INFN, Bari ; Bari U.) ; del Amo Sanchez, P. (Annecy, LAPP) ; Di Crescenzo, A. (INFN, Naples ; Naples U.) ; Di Ferdinando, D. (INFN, Bologna) ; Di Marco, N. (Gran Sasso) ; Dmitrievski, S. (Dubna, JINR) ; Dracos, M. (Louis Pasteur U., Strasbourg I) ; Duchesneau, D. (Annecy, LAPP) ; Dusini, S. (INFN, Padua) ; Dzhatdoev, T. (Moscow State U.) ; Ebert, J. (Hamburg U., Inst. Theor. Phys. II) ; Ereditato, A. (Bern U.) ; Fini, R.A. (INFN, Bari) ; Fukuda, T. (Toho U.) ; Galati, G. (INFN, Bari ; Bari U.) ; Garfagnini, A. (INFN, Padua ; Padua U.) ; Giacomelli, G. (INFN, Bologna ; Bologna U.) ; Goellnitz, C. (Hamburg U., Inst. Theor. Phys. II) ; Goldberg, J. (Technion) ; Gornushkin, Y. (Dubna, JINR) ; Grella, G. (INFN, Salerno) ; Guler, M. (Middle East Tech. U., Ankara) ; Gustavino, C. (INFN, Rome) ; Hagner, C. (Hamburg U., Inst. Theor. Phys. II) ; Hara, T. (Kobe U.) ; Hayakawa, T. (Nagoya U.) ; Hollnagel, A. (Hamburg U., Inst. Theor. Phys. II) ; Hosseini, B. (INFN, Naples ; Naples U.) ; Ishida, H. (Toho U.) ; Ishiguro, K. (Nagoya U.) ; Jakovcic, K. (Boskovic Inst., Zagreb) ; Jollet, C. (Louis Pasteur U., Strasbourg I) ; Kamiscioglu, C. (Middle East Tech. U., Ankara ; Ankara U.) ; Kamiscioglu, M. (Middle East Tech. U., Ankara) ; Katsuragawa, T. (Nagoya U.) ; Kawada, J. (Bern U.) ; Kawahara, H. (Nagoya U.) ; Kim, J.H. (Gyeongsang Natl. U.) ; Kim, S.H. (IBS, Daejeon) ; Kitagawa, N. (Nagoya U.) ; Klicek, B. (Boskovic Inst., Zagreb) ; Kodama, K. (Aichi U.) ; Komatsu, M. (Nagoya U.) ; Kose, U. (INFN, Padua) ; Kreslo, I. (Bern U.) ; Lauria, A. (INFN, Naples ; Naples U.) ; Lenkeit, J. (Hamburg U., Inst. Theor. Phys. II) ; Ljubicic, A. (Boskovic Inst., Zagreb) ; Longhin, A. (INFN, Rome) ; Loverre, P. (INFN, Rome ; Rome U.) ; Malenica, M. (Boskovic Inst., Zagreb) ; Malgin, A. (Moscow, INR) ; Mandrioli, G. (INFN, Bologna) ; Matsuo, T. (Toho U.) ; Matveev, V. (Moscow, INR) ; Mauri, N. (INFN, Bologna ; Bologna U.) ; Medinaceli, E. (INFN, Padua ; Padua U.) ; Meregaglia, A. (Louis Pasteur U., Strasbourg I) ; Meyer, M. (Hamburg U., Inst. Theor. Phys. II) ; Mikado, S. (Nihon U., Narashino) ; Miyanishi, M. (Nagoya U.) ; Monacelli, P. (INFN, Rome) ; Montesi, M.C. (INFN, Naples ; Naples U.) ; Morishima, K. (Nagoya U.) ; Muciaccia, M.T. (INFN, Bari ; Bari U.) ; Naganawa, N. (Nagoya U.) ; Naka, T. (Nagoya U.) ; Nakamura, M. (Nagoya U.) ; Nakano, T. (Nagoya U.) ; Nakatsuka, Y. (Nagoya U.) ; Niwa, K. (Nagoya U.) ; Ogawa, S. (Toho U.) ; Okateva, N. (Lebedev Inst.) ; Olshevsky, A. (Dubna, JINR) ; Omura, T. (Nagoya U.) ; Ozaki, K. (Kobe U.) ; Paoloni, A. (INFN, Rome) ; Park, B.D. (Sungkyunkwan U.) ; Park, I.G. (Gyeongsang Natl. U.) ; Pasqualini, L. (INFN, Bologna ; Bologna U.) ; Pastore, A. (INFN, Bari) ; Patrizii, L. (INFN, Bologna) ; Pessard, H. (Annecy, LAPP) ; Pistillo, C. (Bern U.) ; Podgrudkov, D. (Moscow State U.) ; Polukhina, N. (Lebedev Inst.) ; Pozzato, M. (INFN, Bologna ; Bologna U.) ; Pupilli, F. (Gran Sasso) ; Roda, M. (INFN, Padua ; Padua U.) ; Roganova, T. (Moscow State U.) ; Rokujo, H. (Nagoya U.) ; Rosa, G. (INFN, Rome ; Rome U.) ; Ryazhskaya, O. (Moscow, INR) ; Sato, O. (Nagoya U.) ; Schembri, A. (Gran Sasso) ; Shakiryanova, I. (Moscow, INR) ; Shchedrina, T. (INFN, Naples) ; Sheshukov, A. (INFN, Naples) ; Shibuya, H. (Toho U.) ; Shiraishi, T. (Nagoya U.) ; Shoziyoev, G. (Moscow State U.) ; Simone, S. (INFN, Bari ; Bari U.) ; Sioli, M. (INFN, Bologna ; Bologna U.) ; Sirignano, C. (INFN, Padua ; Padua U.) ; Sirri, G. (INFN, Bologna) ; Spinetti, M. (INFN, Rome) ; Stanco, L. (INFN, Padua) ; Starkov, N. (Lebedev Inst.) ; Stellacci, S.M. (INFN, Salerno) ; Stipcevic, M. (Boskovic Inst., Zagreb) ; Strolin, P. (INFN, Naples ; Naples U.) ; Takahashi, S. (Kobe U.) ; Tenti, M. (INFN, Bologna) ; Terranova, F. (INFN, Rome ; Milan U.) ; Tioukov, V. (INFN, Naples) ; Tufanli, S. (Bern U.) ; Umemoto, A. (Nagoya U.) ; Vilain, P. (Brussels U.) ; Vladimirov, M. (Lebedev Inst.) ; Votano, L. (INFN, Rome) ; Vuilleumier, J.L. (Bern U.) ; Wilquet, G. (Brussels U.) ; Wonsak, B. (Hamburg U., Inst. Theor. Phys. II) ; Yoon, C.S. (Gyeongsang Natl. U.) ; Yaguchi, I. (Bern U.) ; Yoshimoto, M. (Nagoya U.) ; Zemskova, S. (Dubna, JINR) ; Zghiche, A. (Annecy, LAPP)

Publication 2014-10-27
Imprint 13 Jul 2014
Number of pages 10
Note Comments: Submitted to Progress of Theoretical and Experimental Physics (PTEP)
Submitted to Progress of Theoretical and Experimental Physics (PTEP)
In: Prog. Theor. Exp. Phys. 2014 (2014) 101C01
DOI 10.1093/ptep/ptu132
Subject category hep-ex
Accelerator/Facility, Experiment CERN SPS ; OPERA CNGS1
Abstract The OPERA experiment is searching for nu_mu -> nu_tau oscillations in appearance mode i.e. via the direct detection of tau leptons in nu_tau charged current interactions. The evidence of nu_mu -> nu_tau appearance has been previously reported with three nu_tau candidate events using a sub-sample of data from the 2008-2012 runs. We report here a fourth nu_tau candidate event, with the tau decaying into a hadron, found after adding the 2012 run events without any muon in the final state to the data sample. Given the number of analysed events and the low background, nu_mu -> nu_tau oscillations are established with a significance of 4.2sigma.
Copyright/License © The Author(s) 2014. Published by Oxford University Press on behalf of the Physical Society of Japan. (License: arXiv nonexclusive-distrib. 1.0)



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