OPERA tau neutrino charged current interactions

A. Schembri, M. Tenti, K. Ozaki, Masahiro Komatsu, A. M. Anokhina, I. Tsanaktsidis, S. Dmitrievsky, Gaston Wilquet, G. Mandrioli, I. Kreslo, Kunihiro Morishima, N. G. Polukhina, N. I. Starkov, Alessandro Pastore, A. Iuliano, M. Roda, V. Tioukov, F. Mizutani, Tatsuhiro Naka, S. Mikado, Katsumi Ishiguro, L. Consiglio, A. M. Guler, Naotaka Naganawa, Alessandro Paoloni, T. M. Roganova, N. Agafonova, G. Grella, A. S. Malgin, Cécile Jollet, M. Spinetti, Nicola D'Ambrosio, B. Klicek, F. Pupilli, P. F. Loverre, A. Longhin, T. Hayakawa, Caren Hagner, A. Lavasa, Kimio Niwa, Akitaka Ariga, Osamu Sato, J. Ebert, I. Shakirianova, E. Shibayama, C. Gustavino, Krešimir Jakovčić, Anselmo Meregaglia, Adele Lauria, M. T. Muciaccia, Chiara Sirignano, P. Monacelli, N. Di Marco, E. Medinaceli, S. Simone, T. Fukuda, L. Votano, B. D. Park, Hiroki Rokujo, Salvatore Buontempo, S. Vasina, G. Sirri, Shigeki Aoki, A. Di Crescenzo, S. Dusini, P. Del Amo Sanchez, A. Buonaura, Artem Chukanov, Maria Cristina Montesi, Seok Kim, S. Tufanli, J. Goldberg, Simona Maria Stellacci, M. Nakamura, L. Stanco, T. Matsuo, O. G. Ryazhskaya, C. Kamiscioglu, M. Pozzato, M. Kamiscioglu, Motoaki Miyanishi, A. Sotnikov, Toshiyuki Nakano, S. Ogawa, L. Pasqualini, Giuliana Galati, N. M. Okateva, Andrey Ustyuzhanin, H. Pessard, Mario Stipčević, M. Chernyavskiy, L. Patrizii, D. A. Podgrudkov, Timur Dzhatdoev, F. Laudisio, Gianfranca De Rosa, M. De Serio, T. Shiraishi, V. Gentile, A. Hollnagel, N. Mauri, D. Duchesneau, S. Gorbunov, C. S. Yoon, Cristiano Bozza, Nobuko Kitagawa, M. Vidal García, T. Šimko, R. A. Fini, V. A. Matveev, Tomoko Ariga, Y. A. Gornushkin, H. Shibuya, T. V. Shchedrina, F. Terranova, Pierre Vilain, A. Alexandrov, R. Brugnera, A. Garfagnini, F. Fornari, Marcos Dracos, Satoru Takahashi, Utku Kose, P. Strolin, A. Bertolin, T. Hara, Antonio Ereditato, G. De Lellis, K. Kodama, J. L. Vuilleumier, D. Di Ferdinando, E. Voevodina

doi:10.1038/s41597-021-00991-y

<jats:title>Abstract</jats:title><jats:p>The OPERA experiment was designed to discover the <jats:italic>v</jats:italic><jats:sub><jats:italic>τ</jats:italic></jats:sub> appearance in a <jats:italic>v</jats:italic><jats:sub><jats:italic>μ</jats:italic></jats:sub> beam, due to neutrino oscillations. The detector, located in the underground Gran Sasso Laboratory, consisted of a nuclear photographic emulsion/lead target with a mass of about 1.25 kt, complemented by electronic detectors. It was exposed from 2008 to 2012 to the CNGS beam: an almost pure <jats:italic>v</jats:italic><jats:sub><jats:italic>μ</jats:italic></jats:sub> beam with a baseline of 730 km, collecting a total of 1.8·10<jats:sup>20</jats:sup> protons on target. The OPERA Collaboration eventually assessed the discovery of <jats:italic>v</jats:italic><jats:sub><jats:italic>μ</jats:italic></jats:sub>→<jats:italic>v</jats:italic><jats:sub><jats:italic>τ</jats:italic></jats:sub> oscillations with a statistical significance of 6.1 <jats:italic>σ</jats:italic> by observing ten <jats:italic>v</jats:italic><jats:sub><jats:italic>τ</jats:italic></jats:sub> CC interaction candidates. These events have been published on the Open Data Portal at CERN. This paper provides a detailed description of the <jats:italic>v</jats:italic><jats:sub><jats:italic>τ</jats:italic></jats:sub> data sample to make it usable by the whole community.</jats:p>

OPERA tau neutrino charged current interactions

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