Evidence of electron neutrino appearance in a muon neutrino beam

(ProQuest: ... denotes formulae and/or non-USASCII text omitted) The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, ... [approximate] 2.4 x 10 super(-3) eV super(2). An excess of electron neutrino interactions over background is observed from a...

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Veröffentlicht in:	Physical review. D 2013-08, Vol.88 (3), Article 032002
Hauptverfasser:	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.
Format:	Artikel
Sprache:	eng
Schlagworte:	Approximation Cosmology Gravitation High Energy Physics - Experiment Muons Neutrino beams Neutrinos Oscillations Physics Splitting Texts
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Zusammenfassung:	(ProQuest: ... denotes formulae and/or non-USASCII text omitted) The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, ... [approximate] 2.4 x 10 super(-3) eV super(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 + or - 0.4(syst) events is expected. The background-only hypothesis is rejected with a p value of 0.0009 (3.1[sigma]), and a fit assuming [nu] sub( mu ) arrow right [nu] sub(e) oscillations with sin super(2)2[straighttheta] sub(23) = 1, delta sub(CP) = 0 and ... = 2.4 x 10 super(-3) eV super(2) yields sin super(2)2[straighttheta] sub(13) = ...(stat + syst).
ISSN:	1550-7998 2470-0010 1550-2368 2470-0029
DOI:	10.1103/PhysRevD.88.032002