Abe, K. et al. (2013) Evidence of electron neutrino appearance in a muon neutrino beam. Physical Review D, 88(3), 032002. (doi: 10.1103/PhysRevD.88.032002)
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Abstract
The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, | Δ m 2 32 | ≈ 2.4 × 10 − 3 eV 2 . An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam’s origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3 ± 0.4 ( syst ) events is expected. The background-only hypothesis is rejected with a p value of 0.0009 ( 3.1 σ ), and a fit assuming ν μ → ν e oscillations with sin 2 2 θ 23 = 1 , δ C P = 0 and | Δ m 2 32 | = 2.4 × 10 − 3 eV 2 yields sin 2 2 θ 13 = 0.088 + 0.049 − 0.039 ( stat + syst ) .
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Litchfield, Dr Phillip |
Authors: | Abe, K., Abgrall, N., Aihara, H., Akiri, T., Albert, J. B., Andreopoulos, C., Aoki, S., Ariga, A., Ariga, T., Assylbekov, S., Autiero, D., Barbi, M., Barker, G. J., Barr, G., Bass, M., Batkiewicz, M., Bay, F., Bentham, S. W., Berardi, V., Berger, B. E., Berkman, S., Bertram, I., Beznosko, D., Bhadra, S., Blaszczyk, F. d. M., Blondel, A., Bojechko, C., Boyd, S., Brailsford, D., Bravar, A., Bronner, C., Brook-Roberge, D. G., Buchanan, N., Calland, R. G., Caravaca Rodríguez, J., Cartwright, S. L., Castillo, R., Catanesi, M. G., Cervera, A., Cherdack, D., Christodoulou, G., Clifton, A., Coleman, J., Coleman, S. J., Collazuol, G., Connolly, K., Cremonesi, L., Curioni, A., Dabrowska, A., Danko, I., Das, R., Davis, S., Day, M., de André, J. P. A. M., de Perio, P., De Rosa, G., Dealtry, T., Dennis, S., Densham, C., Di Lodovico, F., Di Luise, S., Dobson, J., Drapier, O., Duboyski, T., Dufour, F., Dumarchez, J., Dytman, S., Dziewiecki, M., Dziomba, M., Emery, S., Ereditato, A., Escudero, L., Finch, A. J., Frank, E., Friend, M., Fujii, Y., Fukuda, Y., Furmanski, A., Galymov, V., Gaudin, A., Giffin, S., Giganti, C., Gilje, K., Golan, T., Gomez-Cadenas, J. J., Gonin, M., Grant, N., Gudin, D., Hadley, D. R., Haesler, A., Haigh, M. D., Hamilton, P., Hansen, D., Hara, T., Hartz, M., Hasegawa, T., Hastings, N. C., Hayato, Y., Hearty, C., Helmer, R. L., Hierholzer, M., Hignight, J., Hillairet, A., Himmel, A., Hiraki, T., Hirota, S., Holeczek, J., Horikawa, S., Huang, K., Ichikawa, A. K., Ieki, K., Ieva, M., Ikeda, M., Imber, J., Insler, J., Irvine, T. J., Ishida, T., Ishii, T., Ives, S. J., Iyogi, K., Izmaylov, A., Jacob, A., Jamieson, B., Johnson, R. A., Jo, J. H., Jonsson, P., Joo, K. K., Jung, C. K., Kaboth, A., Kaji, H., Kajita, T., Kakuno, H., Kameda, J., Kanazawa, Y., Karlen, D., Karpikov, I., Kearns, E., Khabibullin, M., Khanam, F., Khotjantsev, A., Kielczewska, D., Kikawa, T., Kilinski, A., Kim, J. Y., Kim, J., Kim, S. B., Kirby, B., Kisiel, J., Kitching, P., Kobayashi, T., Kogan, G., Kolaceke, A., Konaka, A., Kormos, L. L., Korzenev, A., Koseki, K., Koshio, Y., Kowalik, K., Kreslo, I., Kropp, W., Kubo, H., Kudenko, Y., Kumaratunga, S., Kurjata, R., Kutter, T., Lagoda, J., Laihem, K., Laing, A., Laveder, M., Lawe, M., Lazos, M., Lee, K. P., Licciardi, C., Lim, I. T., Lindner, T., Lister, C., Litchfield, R. P., Longhin, A., Lopez, G. D., Ludovici, L., Macaire, M., Magaletti, L., Mahn, K., Malek, M., Manly, S., Marchionni, A., Marino, A. D., Marteau, J., Martin, J. F., Maruyama, T., Marzec, J., Masliah, P., Mathie, E. L., Matveev, V., Mavrokoridis, K., Mazzucato, E., McCauley, N., McFarland, K. S., McGrew, C., McLachlan, T., Messina, M., Metelko, C., Mezzetto, M., Mijakowski, P., Miller, C. A., Minamino, A., Mineev, O., Mine, S., Missert, A., Miura, M., Monfregola, L., Moriyama, S., Mueller, T. A., Murakami, A., Murdoch, M., Murphy, S., Myslik, J., Nagasaki, T., Nakadaira, T., Nakahata, M., Nakai, T., Nakajima, K., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Naples, D., Nicholls, T. C., Nielsen, C., Nirkko, M., Nishikawa, K., Nishimura, Y., O’Keeffe, H. M., Obayashi, Y., Ohta, R., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S. M., Otani, M., Owen, R. A., Oyama, Y., Pac, M. Y., Palladino, V., Paolone, V., Payne, D., Pearce, G. F., Perevozchikov, O., Perkin, J. D., Petrov, Y., Pinzon Guerra, E. S., Plonski, P., Poplawska, E., Popov, B., Posiadala, M., Poutissou, J.-M., Poutissou, R., Przewlocki, P., Quilain, B., Radicioni, E., Ratoff, P. N., Ravonel, M., Rayner, M. A. M., Reeves, M., Reinherz-Aronis, E., Retiere, F., Robert, A., Rodrigues, P. A., Rondio, E., Roth, S., Rubbia, A., Ruterbories, D., Sacco, R., Sakashita, K., Sánchez, F., Scantamburlo, E., Scholberg, K., Schwehr, J., Scott, M., Scully, D. I., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shibata, M., Shiozawa, M., Short, S., Shustrov, Y., Sinclair, P., Smith, B., Smith, R. J., Smy, M., Sobczyk, J. T., Sobel, H., Sorel, M., Southwell, L., Stamoulis, P., Steinmann, J., Still, B., Suzuki, A., Suzuki, K., Suzuki, S. Y., Suzuki, Y., Szeglowski, T., Szeptycka, M., Tacik, R., Tada, M., Takahashi, S., Takeda, A., Takeuchi, Y., Tanaka, H. A., Tanaka, M. M., Tanaka, M., Taylor, I. J., Terhorst, D., Terri, R., Thompson, L. F., Thorley, A., Tobayama, S., Toki, W., Tomura, T., Totsuka, Y., Touramanis, C., Tsukamoto, T., Tzanov, M., Uchida, Y., Ueno, K., Vacheret, A., Vagins, M., Vasseur, G., Wachala, T., Waldron, A. V., Walter, C. W., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilkes, R. J., Wilking, M. J., Wilkinson, C., Williamson, Z., Wilson, J. R., Wilson, R. J., Wongjirad, T., Yamada, Y., Yamamoto, K., Yanagisawa, C., Yen, S., Yershov, N., Yokoyama, M., Yuan, T., Zalewska, A., Zambelli, L., Zaremba, K., Ziembicki, M., Zimmerman, E. D., Zito, M., and Żmuda, J. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review D |
Publisher: | American Physical Society |
ISSN: | 1550-7998 |
ISSN (Online): | 1550-2368 |
Published Online: | 05 August 2013 |
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