Evidence for $ν_μ\to ν_τ$ appearance in the CNGS neutrino beam with the OPERA experiment
Creators: name: Agafonova, N.
name: Aleksandrov, A.
name: Anokhina, A.
name: Aoki, S.
name: Ariga, A.
name: Ariga, T.
name: Asada, T.
name: Autiero, D.
name: Dhahbi, A. Ben
name: Badertscher, A.
name: Bender, D.
name: Bertolin, A.
name: Bozza, C.
name: Brugnera, R.
name: Brunet, F.
name: Brunetti, G.
name: Buonaura, A.
name: Buontempo, S.
name: Buettner, B.
name: Chaussard, L.
name: Chernyavsky, M.
name: Chiarella, V.
name: Chukanov, A.
name: Consiglio, L.
name: D'Ambrosio, N.
name: De Lellis, G.
name: De Serio, M.
name: Sanchez, P. Del Amo
name: Di Crescenzo, A.
name: Di Ferdinando, D.
name: Di Marco, N.
name: Dmitrievski, S.
name: Dracos, M.
name: Duchesneau, D.
name: Dusini, S.
name: Dzhatdoev, T.
name: Ebert, J.
name: Ereditato, A.
name: Favier, J.
name: Ferber, T.
name: Ferone, G.
name: Fini, R. A.
name: Fukuda, T.
name: Galati, G.
name: Garfagnini, A.
name: Giacomelli, G.
name: Goellnitz, C.
name: Goldberg, J.
name: Gornushkin, Y.
name: Grella, G.
name: Grianti, F.
name: Guler, M.
name: Gustavino, C.
name: Hagner, C.
name: Hakamata, K.
name: Hara, T.
name: Hayakawa, T.
name: Hierholzer, M.
name: Hollnagel, A.
name: Hosseini, B.
name: Ishida, H.
name: Ishiguro, K.
name: Ishikawa, M.
name: Jakovcic, K.
name: Jollet, C.
name: Kamiscioglu, C.
name: Kamiscioglu, M.
name: Katsuragawa, T.
name: Kawada, J.
name: Kawahara, H.
name: Kim, J. H.
name: Kim, S. H.
name: Kimura, M.
name: Kitagawa, N.
name: Klicek, B.
name: Kodama, K.
name: Komatsu, M.
name: Kose, U.
name: Kreslo, I.
name: Lauria, A.
name: Lenkeit, J.
name: Ljubicic, A.
name: Longhin, A.
name: Loverre, P.
name: Malgin, A.
name: Mandrioli, G.
name: Marteau, J.
name: Matsuo, T.
name: Matveev, V.
name: Mauri, N.
name: Medinaceli, E.
name: Meregaglia, A.
name: Migliozzi, P.
name: Mikado, S.
name: Miyanishi, M.
name: Miyashita, E.
name: Monacelli, P.
name: Montesi, M. C.
name: Morishima, K.
name: Muciaccia, M. T.
name: Naganawa, N.
name: Naka, T.
name: Nakamura, M.
name: Nakano, T.
name: Nakatsuka, Y.
name: Niwa, K.
name: Ogawa, S.
name: Okateva, N.
name: Olshevsky, A.
name: Omura, T.
name: Ozaki, K.
name: Paoloni, A.
name: Park, B. D.
name: Park, I. G.
name: Pastore, A.
name: Patrizii, L.
name: Pennacchio, E.
name: Pessard, H.
name: Pistillo, C.
name: Podgrudkov, D.
name: Polukhina, N.
name: Pozzato, M.
name: Pretzl, K.
name: Pupilli, F.
name: Rescigno, R.
name: Roda, M.
name: Rokujo, H.
name: Roganova, T.
name: Rosa, G.
name: Rostovtseva, I.
name: Rubbia, A.
name: Ryazhskaya, O.
name: Sato, O.
name: Sato, Y.
name: Schembri, A.
name: Schmidt-Parzefal, W.
name: Shakiryanova, I.
name: Shchedrina, T.
name: Sheshukov, A.
name: Shibuya, H.
name: Shiraishi, T.
name: Shoziyoev, G.
name: Simone, S.
name: Sioli, M.
name: Sirignano, C.
name: Sirri, G.
name: Spinetti, M.
name: Stanco, L.
name: Starkov, N.
name: Stellacci, S. M.
name: Stipcevic, M.
name: Strauss, T.
name: Strolin, P.
name: Suzuki, K.
name: Takahashi, S.
name: Tenti, M.
name: Terranova, F.
name: Tioukov, V.
name: Tufanli, S.
name: Vilain, P.
name: Vladimirov, M.
name: Votano, L.
name: Vuilleumier, J. L.
name: Wilquet, G.
name: Wonsak, B.
name: Yoon, C. S.
name: Yoshida, J.
name: Yoshimoto, M.
name: Zaitsev, Y.
name: Zemskova, S.
name: Zghiche, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The OPERA experiment is designed to search for $ν_μ \rightarrow ν_τ$ oscillations in appearance mode i.e. through the direct observation of the $τ$ lepton in $ν_τ$ charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two $ν_τ$ candidates with a $τ$ decaying into hadrons were observed in a sub-sample of data of the 2008-2011 runs. Here we report the observation of a third $ν_τ$ candidate in the $τ^-\toμ^-$ decay channel coming from the analysis of a sub-sample of the 2012 run. Taking into account the estimated background, the absence of $ν_μ \rightarrow ν_τ$ oscillations is excluded at the 3.4 $σ$ level.
description: 9 pages, 5 figures, 1 tables