First Muon-Neutrino Disappearance Study with an Off-Axis Beam
Creators: name: T2K Collaboration
name: Abe, K.
name: Abgrall, N.
name: Ajima, Y.
name: Aihara, H.
name: Albert, J. B.
name: Andreopoulos, C.
name: Andrieu, B.
name: Anerella, M. D.
name: Aoki, S.
name: Araoka, O.
name: Argyriades, J.
name: Ariga, A.
name: Ariga, T.
name: Assylbekov, S.
name: Autiero, D.
name: Badertscher, A.
name: Barbi, M.
name: Barker, G. J.
name: Barr, G.
name: Bass, M.
name: Batkiewicz, M.
name: Bay, F.
name: Bentham, S.
name: Berardi, V.
name: Berger, B. E.
name: Bertram, I.
name: Besnier, M.
name: Beucher, J.
name: Beznosko, D.
name: Bhadra, S.
name: Blaszczyk, F. d. M.
name: Blocki, J.
name: Blondel, A.
name: Bojechko, C.
name: Bouchez, J.
name: Boyd, S. B.
name: Bravar, A.
name: Bronner, C.
name: Brook-Roberge, D. G.
name: Buchanan, N.
name: Budd, H.
name: Calland, R.
name: Calvet, D.
name: Rodriguez, J. Caravaca
name: Cartwright, S. L.
name: Carver, A.
name: Castillo, R.
name: Catanesi, M. G.
name: Cazes, A.
name: Cervera, A.
name: Chavez, C.
name: Choi, S.
name: Christodoulou, G.
name: Coleman, J.
name: Collazuol, G.
name: Coleman, W.
name: Connolly, K.
name: Curioni, A.
name: Dabrowska, A.
name: Danko, I.
name: Das, R.
name: Davies, G. S.
name: Davis, S.
name: Day, M.
name: De Rosa, G.
name: de André, J. P. A. M.
name: de Perio, P.
name: Dealtry, T.
name: Delbart, A.
name: Densham, C.
name: Di Lodovico, F.
name: Di Luise, S.
name: Tran, P. Dinh
name: Dobson, J.
name: Dore, U.
name: Drapier, O.
name: Duboyski, T.
name: Dufour, F.
name: Dumarchez, J.
name: Dytman, S.
name: Dziewiecki, M.
name: Dziomba, M.
name: Emery, S.
name: Ereditato, A.
name: Escallier, J. E.
name: Escudero, L.
name: Esposito, L. S.
name: Fechner, M.
name: Ferrero, A.
name: Finch, A. J.
name: Frank, E.
name: Fujii, Y.
name: Fukuda, Y.
name: Galymov, V.
name: Ganetis, G. L.
name: Gannaway, F. C.
name: Gaudin, A.
name: Gendotti, A.
name: George, M. A.
name: Giffin, S.
name: Giganti, C.
name: Gilje, K.
name: Ghosh, A. K.
name: Golan, T.
name: Goldhaber, M.
name: Gomez-Cadenas, J. J.
name: Gomi, S.
name: Gonin, M.
name: Grant, N.
name: Grant, A.
name: Gumplinger, P.
name: Guzowski, P.
name: Hadley, D. R.
name: Haesler, A.
name: Haigh, M. D.
name: Hamano, K.
name: Hansen, C.
name: Hansen, D.
name: Hara, T.
name: Harrison, P. F.
name: Hartfiel, B.
name: Hartz, M.
name: Haruyama, T.
name: Hasegawa, T.
name: Hastings, N. C.
name: Hatzikoutelis, A.
name: Hayashi, K.
name: Hayato, Y.
name: Hearty, C.
name: Helmer, R. L.
name: Henderson, R.
name: Higashi, N.
name: Hignight, J.
name: Hillairet, A.
name: Hiraki, T.
name: Hirose, E.
name: Holeczek, J.
name: Horikawa, S.
name: Huang, K.
name: Hyndman, A.
name: Ichikawa, A. K.
name: Ieki, K.
name: Ieva, M.
name: Iida, M.
name: Ikeda, M.
name: Ilic, J.
name: Imber, J.
name: Ishida, T.
name: Ishihara, C.
name: Ishii, T.
name: Ives, S. J.
name: Iwasaki, M.
name: Iyogi, K.
name: Izmaylov, A.
name: Jamieson, B.
name: Johnson, R. A.
name: Joo, K. K.
name: Jover-Manas, G. V.
name: Jung, C. K.
name: Kaji, H.
name: Kajita, T.
name: Kakuno, H.
name: Kameda, J.
name: Kaneyuki, K.
name: Karlen, D.
name: Kasami, K.
name: Kato, I.
name: Kawamuko, H.
name: Kearns, E.
name: Khabibullin, M.
name: Khanam, F.
name: Khotjantsev, A.
name: Kielczewska, D.
name: Kikawa, T.
name: Kim, J.
name: Kim, J. Y.
name: Kim, S. B.
name: Kimura, N.
name: Kirby, B.
name: Kisiel, J.
name: Kitching, P.
name: Kobayashi, T.
name: Kogan, G.
name: Koike, S.
name: Konaka, A.
name: Kormos, L. L.
name: Korzenev, A.
name: Koseki, K.
name: Koshio, Y.
name: Kouzuma, Y.
name: Kowalik, K.
name: Kravtsov, V.
name: Kreslo, I.
name: Kropp, W.
name: Kubo, H.
name: Kubota, J.
name: Kudenko, Y.
name: Kulkarni, N.
name: Kurimoto, Y.
name: Kurjata, R.
name: Kutter, T.
name: Lagoda, J.
name: Laihem, K.
name: Laing, A.
name: Laveder, M.
name: Lawe, M.
name: Lee, K. P.
name: Le, P. T.
name: Levy, J. M.
name: Licciardi, C.
name: Lim, I. T.
name: Lindner, T.
name: Lister, C.
name: Litchfield, R. P.
name: Litos, M.
name: Longhin, A.
name: Lopez, G. D.
name: Loverre, P. F.
name: Ludovici, L.
name: Lux, T.
name: Macaire, M.
name: Magaletti, L.
name: Mahn, K.
name: Makida, Y.
name: Malek, M.
name: Manly, S.
name: Marchionni, A.
name: Marino, A. D.
name: Marone, A. J.
name: Marteau, J.
name: Martin, J. F.
name: Maruyama, T.
name: Maryon, T.
name: Marzec, J.
name: Masliah, P.
name: Mathie, E. L.
name: Matsumura, C.
name: Matsuoka, K.
name: Matveev, V.
name: Mavrokoridis, K.
name: Mazzucato, E.
name: McCauley, N.
name: McFarland, K. S.
name: McGrew, C.
name: McLachlan, T.
name: Messina, M.
name: Metcalf, W.
name: Metelko, C.
name: Mezzetto, M.
name: Mijakowski, P.
name: Miller, C. A.
name: Minamino, A.
name: Mineev, O.
name: Mine, S.
name: Missert, A. D.
name: Mituka, G.
name: Miura, M.
name: Mizouchi, K.
name: Monfregola, L.
name: Moreau, F.
name: Morgan, B.
name: Moriyama, S.
name: Muir, A.
name: Murakami, A.
name: Muratore, J. F.
name: Murdoch, M.
name: Murphy, S.
name: Myslik, J.
name: Nagai, N.
name: Nakadaira, T.
name: Nakahata, M.
name: Nakai, T.
name: Nakajima, K.
name: Nakamoto, T.
name: Nakamura, K.
name: Nakayama, S.
name: Nakaya, T.
name: Nakayoshi, K.
name: Naples, D.
name: Navin, M. L.
name: Nicholls, T. C.
name: Nielsen, B.
name: Nielsen, C.
name: Nishikawa, K.
name: Nishino, H.
name: Nitta, K.
name: Nobuhara, T.
name: Nowak, J. A.
name: Obayashi, Y.
name: Ogitsu, T.
name: Ohhata, H.
name: Okamura, T.
name: Okumura, K.
name: Okusawa, T.
name: Oser, S. M.
name: Otani, M.
name: Owen, R. A.
name: Oyama, Y.
name: Ozaki, T.
name: Pac, M. Y.
name: Palladino, V.
name: Paolone, V.
name: Paul, P.
name: Payne, D.
name: Pearce, G. F.
name: Perkin, J. D.
name: Pettinacci, V.
name: Pierre, F.
name: Poplawska, E.
name: Popov, B.
name: Posiadala, M.
name: Poutissou, J. -M.
name: Poutissou, R.
name: Przewlocki, P.
name: Qian, W.
name: Raaf, J. L.
name: Radicioni, E.
name: Ratoff, P. N.
name: Raufer, T. M.
name: Ravonel, M.
name: Raymond, M.
name: Retiere, F.
name: Robert, A.
name: Rodrigues, P. A.
name: Rondio, E.
name: Roney, J. M.
name: Rossi, B.
name: Roth, S.
name: Rubbia, A.
name: Ruterbories, D.
name: Sabouri, S.
name: Sacco, R.
name: Sakashita, K.
name: Sánchez, F.
name: Sarrat, A.
name: Sasaki, K.
name: Scholberg, K.
name: Schwehr, J.
name: Scott, M.
name: Scully, D. I.
name: Seiya, Y.
name: Sekiguchi, T.
name: Sekiya, H.
name: Shibata, M.
name: Shimizu, Y.
name: Shiozawa, M.
name: Short, S.
name: Sinclair, P. D.
name: Siyad, M.
name: Smith, B. M.
name: Smith, R. J.
name: Smy, M.
name: Sobczyk, J. T.
name: Sobel, H.
name: Sorel, M.
name: Stahl, A.
name: Stamoulis, P.
name: Steinmann, J.
name: Still, B.
name: Stone, J.
name: Stodulski, M.
name: Strabel, C.
name: Sulej, R.
name: Suzuki, A.
name: Suzuki, K.
name: Suzuki, S.
name: Suzuki, S. Y.
name: Suzuki, Y.
name: Suzuki, Y.
name: Swierblewski, J.
name: Szeglowski, T.
name: Szeptycka, M.
name: Tacik, R.
name: Tada, M.
name: Taguchi, M.
name: Takahashi, S.
name: Takeda, A.
name: Takenaga, Y.
name: Takeuchi, Y.
name: Tanaka, K.
name: Tanaka, H. A.
name: Tanaka, M.
name: Tanaka, M. M.
name: Tanimoto, N.
name: Tashiro, K.
name: Taylor, I.
name: Terashima, A.
name: Terhorst, D.
name: Terri, R.
name: Thompson, L. F.
name: Thorley, A.
name: Toki, W.
name: Tobayama, S.
name: Tomaru, T.
name: Totsuka, Y.
name: Touramanis, C.
name: Tsukamoto, T.
name: Tzanov, M.
name: Uchida, Y.
name: Ueno, K.
name: Vacheret, A.
name: Vagins, M.
name: Vasseur, G.
name: Veledar, O.
name: Wachala, T.
name: Walding, J. J.
name: Waldron, A. V.
name: Walter, C. W.
name: Wanderer, P. J.
name: Wang, J.
name: Ward, M. A.
name: Ward, G. P.
name: Wark, D.
name: Wascko, M. O.
name: Weber, A.
name: Wendell, R.
name: West, N.
name: Whitehead, L. H.
name: Wikström, G.
name: Wilkes, R. J.
name: Wilking, M. J.
name: Williamson, Z.
name: Wilson, J. R.
name: Wilson, R. J.
name: Wongjirad, T.
name: Yamada, S.
name: Yamada, Y.
name: Yamamoto, A.
name: Yamamoto, K.
name: Yamanoi, Y.
name: Yamaoka, H.
name: Yamauchi, T.
name: Yanagisawa, C.
name: Yano, T.
name: Yen, S.
name: Yershov, N.
name: Yokoyama, M.
name: Yuan, T.
name: Zalewska, A.
name: Zalipska, J.
name: Zambelli, L.
name: Zaremba, K.
name: Ziembicki, M.
name: Zimmerman, E. D.
name: Zito, M.
name: Zmuda, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report a measurement of muon-neutrino disappearance in the T2K experiment. The 295-km muon-neutrino beam from Tokai to Kamioka is the first implementation of the off-axis technique in a long-baseline neutrino oscillation experiment. With data corresponding to 1.43 10**20 protons on target, we observe 31 fully-contained single muon-like ring events in Super-Kamiokande, compared with an expectation of 104 +- 14 (syst) events without neutrino oscillations. The best-fit point for two-flavor nu_mu -&gt; nu_tau oscillations is sin**2(2 theta_23) = 0.98 and |Δm**2_32| = 2.65 10**-3 eV**2. The boundary of the 90 % confidence region includes the points (sin**2(2 theta_23),|Δm**2_32|) = (1.0, 3.1 10**-3 eV**2), (0.84, 2.65 10**-3 eV**2) and (1.0, 2.2 10**-3 eV**2).
description: 7 pages, 4 figures