Final Results of the OPERA Experiment on ντ Appearance in the CNGS Neutrino Beam (CROSBI ID 251464)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Agafonova, N. ; Aleksandrov, A. ; Anokhina, A. ; Aoki, S. ; Ariga, A. ; Ariga, T. ; Bertolin, A. ; Bozza, C. ; Brugnera, R. ; Buonaura, A. ; Buontempo, S. ; Chernyavsky, M. ; Chukanov, A. ; Consiglio, L. ; D'Ambrosio, N. ; De Lellis, G. ; De Serio, M. ; del Amo Sanchez, P. ; Di Crescenzo, A. ; Di Ferdinando, D. ; Di Marco, N. ; Dmitrievski, S. ; Dracos, M. ; Duchesneau, D. ; Dusini, S. ; Dzhatdoev, T. ; Ebert, J. ; Ereditato, A. ; Favier, J. ; Fini, R. A. ; Fornari, F. ; Fukuda, T. ; Galati, G. ; Garfagnini, A. ; Gentile, V. ; Goldberg, J. ; Gorbunov, S. ; Gornushkin, Y. ; Grella, G. ; Guler, M. ; Gustavino, C. ; Hagner, C. ; Hara, T. ; Hayakawa, T. ; Hollnagel, A. ; Ishiguro, K. ; Iuliano, A. ; Jakovčić, Krešimir ; Jollet, C. ; Kamiscioglu, C. ; Kamiscioglu, M. ; Kim, S. H. ; Kitagawa, N. ; Kliček, Budimir ; Kodama, K. ; Komatsu, M. ; Kose, U. ; Kreslo, I. ; Laudisio, F. ; Lauria, A. ; Ljubičić, Ante ; Longhin, A. ; Loverre, P. ; Malgin, A. ; Malenica, Marko ; Mandrioli, G. ; Matsuo, T. ; Matveev, V. ; Mauri, N. ; Medinaceli, E. ; Meregaglia, A. ; Mikado, S. ; Miyanishi, M. ; Mizutani, F. ; Monacelli, P. ; Montesi, M. C. ; Morishima, K. ; Muciaccia, M. T. ; Naganawa, N. ; Naka, T. ; Nakamura, M. ; Nakano, T. ; Niwa, K. ; Okateva, N. ; Ogawa, S. ; Olchevsky, A. ; Ozaki, K. ; Paoloni, A. ; Paparella, L. ; Park, B. D. ; Pasqualini, L. ; Pastore, A. ; Patrizii, L. ; Pessard, H. ; Pistillo, C. ; Podgrudkov, D. ; Polukhina, N. ; Pozzato, M. ; Pupilli, F. ; Roda, M. ; Roganova, T. ; Rokujo, H. ; Rosa, G. ; Ryazhskaya, O. ; Sadovsky, A. ; Sato, O. ; Schembri, A. ; Shakirianova, I. ; Shchedrina, T. ; Shibuya, H. ; Shibayama, E. ; Shiraishi, T. ; Simone, S. ; Sirignano, C. ; Sirri, G. ; Sotnikov, A. ; Spinetti, M. ; Stanco, L. ; Starkov, N. ; Stellacci, S. M. ; Stipčević, Mario ; Strolin, P. ; Takahashi, S. ; Tenti, M. ; Terranova, F. ; Tioukov, V. ; Tufanli, S. ; Ustyuzhanin, A. ; Vasina, S. ; Vilain, P. ; Voevodina, E. ; Votano, L. ; Vuilleumier, J. L. ; Wilquet, G. ; Wonsak, B. ; Yoon, C. S.
OPERA Collaboration
engleski
Final Results of the OPERA Experiment on ντ Appearance in the CNGS Neutrino Beam
The OPERA experiment was designed to study νμ→ντ oscillations in the appearance mode in the CERN to Gran Sasso Neutrino beam (CNGS). In this Letter, we report the final analysis of the full data sample collected between 2008 and 2012, corresponding to 17.97×10^19 protons on target. Selection criteria looser than in previous analyses have produced ten ντ candidate events, thus reducing the statistical uncertainty in the measurement of the oscillation parameters and of ντ properties. A multivariate approach for event identification has been applied to the candidate events and the discovery of ντ appearance is confirmed with an improved significance level of 6.1σ. |Δm_(23)^2| has been measured, in appearance mode, with an accuracy of 20%. The measurement of the ντ charged-current cross section, for the first time with a negligible contamination from ¯ντ, and the first direct evidence for the ντ lepton number are also reported.
OPERA detector, neutrino oscillation, tau leptons
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
120
2018.
211801
7
objavljeno
0031-9007
1079-7114
10.1103/PhysRevLett.120.211801