More results from the OPERA experiment

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Galati, G, Agafonova, N, Aleksandrov, A, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Bender, D, Bertolin, A, Bodnarchuk, I et al (show 122 more authors) , Bozza, C, Brugnera, R, Buonaura, A, Buontempo, S, Buettner, B, Chernyavskiy, M, Chukanov, A, Consiglio, L, D'Ambrosio, N, De Lellis, G, De Serio, M, Sanchez, P Del Amo, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Ereditato, A, Fini, RA, Fornari, F, Fukuda, T, Garfagnini, A, Goldberg, J, Gornushkin, Y, Grella, G, Guler, AM, Gustavino, C, Hagner, C, Hara, T, Hayakawa, H, Hollnagel, A, Hosseini, B, Ishiguro, K, Jakovcic, K, Jollet, C, Kamiscioglu, C, Kamiscioglu, M, Kim, SH, Kitagawa, N, Klicek, B, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Laudisio, F, Lauria, A, Ljubicic, A, Longhin, A, Loverre, PF, Malenica, M, Malgin, A, Mandrioli, G, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meregaglia, A, Mikado, S, Miyanishi, M, Mizutani, F, Monacelli, P, Montesi, MC, Morishima, K, Muciaccia, MT, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Niwa, K, Ogawa, S, Omura, T, Osaki, K, Paoloni, A, Paparella, L, Park, BD, Pasqualini, L, Pastore, A, Patrizii, L, Pessard, H, Podgrudkov, D, Polukhina, N, Pozzato, M, Pupilli, F, Roda, M ORCID: 0000-0002-1569-4397, Roganova, T, Rokujo, H, Rosa, G, Ryazhskaya, O, Sato, O, Schembri, A, Shakirianova, I, Shchedrina, T, Sheshukov, A, Shibayama, E, Shibuya, H, Shiraishi, T, Shoziyoev, G, Simone, S, Sirignano, C, Sirri, G, Sotnikov, A, Spinetti, M, Stanco, L, Starkov, N, Stellacci, SM, Stipcevic, M, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Vasina, S, Vilain, P, Voevodina, E, Votano, L, Vuilleumier, JL, Wilquet, G and Yoon, CS (2017) More results from the OPERA experiment. NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS, 40 (5). ISSN 2037-4909, 1826-9885

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Abstract

The OPERA experiment reached its main goal by proving the appearance of v<inf>τ</inf> in the CNGS v<inf>μ</inf> beam. Five v<inf>τ</inf> candidates were detected with a S/B ratio of ∼ 10, allowing to reject the null hypothesis at 5.1σ. The search has been extended by loosening the selection criteria in order to improve the statistical uncertainty. One of the v<inf>τ</inf> candidates selected with the new strategy shows a double vertex topology and, after a dedicated multivariate analysis, is compatible with being a v<inf>Tτ</inf> interaction with charm production. Based on the enlarged data sample the estimation of Δm²<inf>2</inf>3 in appearance mode is being performed. The search for v<inf>e</inf> interactions has been extended over the full data set with a more than twofold increase in statistics: data are compatible with the non-oscillation hypothesis in the three-flavour mixing model. The implications of the electron neutrino sample in the framework of the 3+1 sterile mode will lead to exclusion limits on sin² 2θ<inf>μe</inf>. Finally, the analysis of the annual modulation of cosmic muons is introduced.

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	12 Jan 2018 11:21
Last Modified:	13 Jun 2025 13:51
DOI:	10.1393/ncc/i2017-17160-0
Related Websites:	Author
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3015943