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Search for Electron Antineutrino Appearance in a Long-baseline Muon Antineutrino Beam

Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a...

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Detalles Bibliográficos
Autores principales: Abe, K., Akutsu, R., Ali, A., Alt, C., Andreopoulos, C., Anthony, L., Antonova, M., Aoki, S., Ariga, A., Asada, Y., Ashida, Y., Atkin, E.T., Awataguchi, Y., Ban, S., Barbi, M., Barker, G.J., Barr, G., Barrow, D., Barry, C., Batkiewicz-Kwasniak, M., Beloshapkin, A., Bench, F., Berardi, V., Berkman, S., Berns, L., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., Bourguille, B., Boyd, S.B., Brailsford, D., Bravar, A., Bravo Berguño, D., Bronner, C., Bubak, A., Buizza Avanzini, M., Calcutt, J., Campbell, T., Cao, S., Cartwright, S.L., Catanesi, M.G., Cervera, A., Chappell, A., Checchia, C., Cherdack, D., Chikuma, N., Christodoulou, G., Coleman, J., Collazuol, G., Cook, L., Coplowe, D., Cudd, A., Dabrowska, A., De Rosa, G., Dealtry, T., Denner, P.F., Dennis, S.R., Densham, C., Di Lodovico, F., Dokania, N., Dolan, S., Doyle, T.A., Drapier, O., Dumarchez, J., Dunne, P., Eklund, L., Emery-Schrenk, S., Ereditato, A., Fernandez, P., Feusels, T., Finch, A.J., Fiorentini, G.A., Fiorillo, G., Francois, C., Friend, M., Fujii, Y., Fujita, R., Fukuda, D., Fukuda, R., Fukuda, Y., Fusshoeller, K., Gameil, K., Giganti, C., Golan, T., Gonin, M., Gorin, A., Guigue, M., Hadley, D.R., Haigh, J.T., Hamacher-Baumann, P., Hartz, M., Hasegawa, T., Hastings, N.C., Hayashino, T., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., Hong Van, N.T., Iacob, F., Ichikawa, A.K., Ikeda, M., Ishida, T., Ishii, T., Ishitsuka, M., Iwamoto, K., Izmaylov, A., Jakkapu, M., Jamieson, B., Jenkins, S.J., Jesús-Valls, C., Jiang, M., Johnson, S., Jonsson, P., Jung, C.K., Kabirnezhad, M., Kaboth, A.C., Kajita, T., Kakuno, H., Kameda, J., Karlen, D., Kasetti, S.P., Kataoka, Y., Katori, T., Kato, Y., Kearns, E., Khabibullin, M., Khotjantsev, A., Kikawa, T., Kim, H., Kim, J., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Koga, T., Konaka, A., Kormos, L.L., Koshio, Y., Kostin, A., Kowalik, K., Kubo, H., Kudenko, Y., Kukita, N., Kuribayashi, S., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamoureux, M., Laveder, M., Lawe, M., Licciardi, M., Lindner, T., Litchfield, R.P., Liu, S.L., Li, X., Longhin, A., Ludovici, L., Lu, X., Lux, T., Machado, L.N., Magaletti, L., Mahn, K., Malek, M., Manly, S., Maret, L., Marino, A.D., Marti-Magro, L., Martin, J.F., Maruyama, T., Matsubara, T., Matsushita, K., Matveev, V., Mavrokoridis, K., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K.S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Minamino, A., Mineev, O., Mine, S., Miura, M., Molina Bueno, L., Moriyama, S., Morrison, J., Mueller, Th.A., Munteanu, L., Murphy, S., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K.G., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Ngoc, T.V., Niewczas, K., Nishikawa, K., Nishimura, Y., Nonnenmacher, T.S., Nova, F., Novella, P., Nowak, J., Nugent, J.C., O'Keeffe, H.M., O'Sullivan, L., Odagawa, T., Okumura, K., Okusawa, T., Oser, S.M., Owen, R.A., Oyama, Y., Palladino, V., Palomino, J.L., Paolone, V., Parker, W.C., Pasternak, J., Paudyal, P., Pavin, M., Payne, D., Penn, G.C., Pickering, L., Pidcott, C., Pintaudi, G., Pinzon Guerra, E.S., Pistillo, C., Popov, B., Porwit, K., Posiadala-Zezula, M., Pritchard, A., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P.N., Reinherz-Aronis, E., Riccio, C., Rondio, E., Roth, S., Rubbia, A., Ruggeri, A.C., Ruggles, C.A., Rychter, A., Sakashita, K., Sánchez, F., Schloesser, C.M., Scholberg, K., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaikhiev, A., Shaker, F., Shaykina, A., Shiozawa, M., Shorrock, W., Shvartsman, A., Smirnov, A., Smy, M., Sobczyk, J.T., Sobel, H., Soler, F.J.P., Sonoda, Y., Steinmann, J., Suvorov, S., Suzuki, A., Suzuki, S.Y., Suzuki, Y., Sztuc, A.A., Tada, M., Tajima, M., Takeda, A., Takeuchi, Y., Tanaka, H.K., Tanaka, H.A., Tanaka, S., Thompson, L.F., Toki, W., Touramanis, C., Towstego, T., Tsui, K.M., Tsukamoto, T., Tzanov, M., Uchida, Y., Uno, W., Vagins, M., Valder, S., Vallari, Z., Vargas, D., Vasseur, G., Vilela, C., Vinning, W.G.S., Vladisavljevic, T., Volkov, V.V., Wachala, T., Walker, J., Walsh, J.G., Wang, Y., Wark, D., Wascko, M.O., Weber, A., Wendell, R., Wilking, M.J., Wilkinson, C., Wilson, J.R., Wilson, R.J., Wood, K., Wret, C., Yamada, Y., Yamamoto, K., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yen, S., Yershov, N., Yokoyama, M., Yoshida, T., Yu, M., Zalewska, A., Zalipska, J., Zaremba, K., Zarnecki, G., Ziembicki, M., Zimmerman, E.D., Zito, M., Zsoldos, S., Zykova, A.
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.124.161802
http://cds.cern.ch/record/2702926
Descripción
Sumario:Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40σ and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.