First muon-neutrino disappearance study with an off-axis beam

Abe, K; Abgrall, N; Ajima, Y; Aihara, H; Albert, Jb; Andreopoulos, C; Andrieu, B; Anerella, Md; Aoki, S; Araoka, O; Argyriades, J; Ariga, A; Ariga, T; Assylbekov, S; Autiero, D; Badertscher, A; Barbi, M; Barker, Gj; Barr, G; Bass, M; Batkiewicz, M; Bay, F; Bentham, S; Berardi, Vincenzo; Berger, Be; Bertram, I; Besnier, M; Beucher, J; Beznosko, D; Bhadra, S; Fdmm, Blaszczyk; Blondel, A; Bojechko, C; Bouchez, J; Boyd, Sb; Bravar, A; Bronner, C; Brook Roberge DG,; Buchanan, N; Budd, H; Calland, Rg; Calvet, D; Rodriguez, J; Cartwright, Sl; Carver, A; Castillo, R; Catanesi, Mg; Cazes, A; Cervera, A; Chavez, C; Choi, S; Christodoulou, G; Coleman, J; Collazuol, G; Coleman, W; Connolly, K; Curioni, A; Dabrowska, A; Danko, I; Das, R; Davies, Gs; Davis, S; Day, M; De Rosa, G; de Andre JPAM,; de Perio, P; Dealtry, T; Delbart, A; Densham, C; Di Lodovico, F; Di Luise, S; Tran, Pd; Dobson, J; Dore, U; Drapier, O; Duboyski, T; Dufour, F; Dumarchez, J; Dytman, S; Dziewiecki, M; Dziomba, M; Emery, S; Ereditato, A; Escallier, Je; Escudero, L; Esposito, Ls; Fechner, M; Ferrero, A; Finch, Aj; Frank, E; Fujii, Y; Fukuda, Y; Galymov, V; Ganetis, Gl; Gannaway, Fc; Gaudin, A; Gendotti, A; George, Ma; Giffin, S; Giganti, C; Gilje, K; Ghosh, Ak; Golan, T; Goldhaber, M; Gomez Cadenas JJ,; Gomi, S; Gonin, M; Grant, N; Grant, A; Gumplinger, P; Guzowski, P; Hadley, Dr; Haesler, A; Haigh, Md; Hamano, K; Hansen, C; Hansen, D; Hara, T; Harrison, Pf; Hartfiel, B; Hartz, M; Haruyama, T; Hasegawa, T; Hastings, Nc; Hatzikoutelis, A; Hayashi, K; Hayato, Y; Hearty, C; Helmer, Rl; Henderson, R; Higashi, N; Hignight, J; Hillairet, A; Hiraki, T; Hirose, E; Holeczek, J; Horikawa, S; Huang, K; Hyndman, A; Ichikawa, Ak; Ieki, K; Ieva, M; Iida, M; Ikeda, M; Ilic, J; Imber, J; Ishida, T; Ishihara, C; Ishii, T; Ives, Sj; Iwasaki, M; Iyogi, K; Izmaylov, A; Jamieson, B; Johnson, Ra; Joo, Kk; Jover Manas GV,; Jung, Ck; Kaji, H; Kajita, T; Kakuno, H; Kameda, J; Kaneyuki, K; Karlen, D; Kasami, K; Kato, I; Kawamuko, H; Kearns, E; Khabibullin, M; Khanam, F; Khotjantsev, A; Kielczewska, D; Kikawa, T; Kim, J; Kim, Jy; Kim, Sb; Kimura, N; Kirby, B; Kisiel, J; Kitching, P; Kobayashi, T; Kogan, G; Koike, S; Konaka, A; Kormos, Ll; Korzenev, A; Koseki, K; Koshio, Y; Kouzuma, Y; Kowalik, K; Kravtsov, V; Kreslo, I; Kropp, W; Kubo, H; Kubota, J; Kudenko, Y; Kulkarni, N; Kurimoto, Y; Kurjata, R; Kutter, T; Lagoda, J; Laihem, K; Laveder, M; Lawe, M; Lee, Kp; Pt, Le; Levy, Jm; Licciardi, C; Lim, It; Lindner, T; Lister, C; Litchfield, Rp; Litos, M; Longhin, A; Lopez, Gd; Loverre, Pf; Ludovici, L; Lux, T; Macaire, M; Magaletti, Lorenzo; Mahn, K; Makida, Y; Malek, M; Manly, S; Marchionni, A; Marino, Ad; Marone, Aj; Marteau, J; Martin, Jf; Maruyama, T; Maryon, T; Marzec, J; Masliah, P; Mathie, El; Matsumura, C; Matsuoka, K; Matveev, V; Mavrokoridis, K; Mazzucato, E; Mccauley, N; Mcfarland, Ks; Mcgrew, C; Mclachlan, T; Messina, M; Metcalf, W; Metelko, C; Mezzetto, M; Mijakowski, P; Miller, Ca; Minamino, A; Mineev, O; Mine, S; Missert, Ad; Mituka, G; Miura, M; Mizouchi, K; Monfregola, L; Moreau, F; Morgan, B; Moriyama, S; Muir, A; Murakami, A; Muratore, Jf; Murdoch, M; Murphy, S; Myslik, J; Nagai, N; Nakadaira, T; Nakahata, M; Nakai, T; Nakajima, K; Nakamoto, T; Nakamura, K; Nakayama, S; Nakaya, T; Naples, D; Navin, Ml; Nicholls, Tc; Nielsen, B; Nielsen, C; Nishikawa, K; Nishino, H; Nitta, K; Nobuhara, T; Nowak, Ja; Obayashi, Y; Ogitsu, T; Ohhata, H; Okamura, T; Okumura, K; Okusawa, T; Oser, Sm; Otani, M; Owen, Ra; Oyama, Y; Ozaki, T; Pac, My; Palladino, V; Paolone, V; Paul, P; Payne, D; Pearce, Gf; Perkin, Jd; Pettinacci, V; Pierre, F; Poplawska, E; Popov, B; Posiadala, M; Poutissou, Jm; Poutissou, R; Przewlocki, P; Qian, W; Raaf, Jl; Radicioni, E; Ratoff, Pn; Raufer, Tm; Ravonel, M; Raymond, M; Reeves, M; Retiere, F; Robert, A; Rodrigues, Pa; Rondio, E; Roney, Jm; Rossi, B; Roth, S; Rubbia, A; Ruterbories, D; Sabouri, S; Sacco, R; Sakashita, K; Sanchez, F; Sarrat, A; Sasaki, K; Scholberg, K; Schwehr, J; Scott, M; Scully, Di; Seiya, Y; Sekiguchi, T; Sekiya, H; Shibata, M; Shimizu, Y; Shiozawa, M; Short, S; Sinclair, Pd; Siyad, M; Smith, Bm; Smith, Rj; Smy, M; Sobczyk, Jt; Sobel, H; Sorel, M; Stahl, A; Stamoulis, P; Steinmann, J; Still, B; Stone, J; Strabel, C; Sulej, R; Suzuki, A; Suzuki, K; Suzuki, S; Suzuki, Sy; Suzuki, Y; Suzuki, Y; Szeglowski, T; Szeptycka, M; Tacik, R; Tada, M; Taguchi, M; Takahashi, S; Takeda, A; Takenaga, Y; Takeuchi, Y; Tanaka, K; Tanaka, Ha; Tanaka, M; Tanaka, Mm; Tanimoto, N; Tashiro, K; Taylor, I; Terashima, A; Terhorst, D; Terri, R; Thompson, Lf; Thorley, A; Toki, W; Tobayama, S; Tomaru, T; Totsuka, Y; Touramanis, C; Tsukamoto, T; Tzanov, M; Uchida, Y; Ueno, K; Vacheret, A; Vagins, M; Vasseur, G; Veledar, O; Wachala, T; Walding, Jj; Waldron, Av; Walter, Cw; Wanderer, Pj; Wang, J; Ward, Ma; Ward, Gp; Wark, D; Wascko, Mo; Weber, A; Wendell, R; West, N; Whitehead, Lh; Wikstrom, G; Wilkes, Rj; Wilking, Mj; Williamson, Z; Wilson, Jr; Wilson, Rj; Wongjirad, T; Yamada, S; Yamada, Y; Yamamoto, A; Yamamoto, K; Yamanoi, Y; Yamaoka, H; Yamauchi, T; Yanagisawa, C; Yano, T; Yen, S; Yershov, N; Yokoyama, M; Yuan, T; Zalewska, A; Zalipska, J; Zambelli, L; Zaremba, K; Ziembicki, M; Zimmerman, Ed; Zito, M; Zmuda, J.

doi:10.1103/PhysRevD.85.031103

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 1.43×1020 protons on target, we observe 31 fully-contained single μ-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 νμ→ντ oscillations is sin⁡2(2θ23)=0.98 and |Δm322|=2.65×10-3 eV2. The boundary of the 90% confidence region includes the points (sin⁡2(2θ23),|Δm322|)=(1.0,3.1×10-3 eV2), (0.84, 2.65×10-3 eV2) and (1.0, 2.2×10-3 eV2).

First muon-neutrino disappearance study with an off-axis beam / Abe, K; Abgrall, N; Ajima, Y; Aihara, H; Albert, Jb; Andreopoulos, C; Andrieu, B; Anerella, Md; Aoki, S; Araoka, O; Argyriades, J; Ariga, A; Ariga, T; Assylbekov, S; Autiero, D; Badertscher, A; Barbi, M; Barker, Gj; Barr, G; Bass, M; Batkiewicz, M; Bay, F; Bentham, S; Berardi, Vincenzo; Berger, Be; Bertram, I; Besnier, M; Beucher, J; Beznosko, D; Bhadra, S; Blaszczyk, Fdmm; Blondel, A; Bojechko, C; Bouchez, J; Boyd, Sb; Bravar, A; Bronner, C; Brook Roberge, Dg; Buchanan, N; Budd, H; Calland, Rg; Calvet, D; Rodriguez, J; Cartwright, Sl; Carver, A; Castillo, R; Catanesi, Mg; Cazes, A; Cervera, A; Chavez, C; Choi, S; Christodoulou, G; Coleman, J; Collazuol, G; Coleman, W; Connolly, K; Curioni, A; Dabrowska, A; Danko, I; Das, R; Davies, Gs; Davis, S; Day, M; De Rosa, G; de Andre, Jpam; de Perio, P; Dealtry, T; Delbart, A; Densham, C; Di Lodovico, F; Di Luise, S; Tran, Pd; Dobson, J; Dore, U; Drapier, O; Duboyski, T; Dufour, F; Dumarchez, J; Dytman, S; Dziewiecki, M; Dziomba, M; Emery, S; Ereditato, A; Escallier, Je; Escudero, L; Esposito, Ls; Fechner, M; Ferrero, A; Finch, Aj; Frank, E; Fujii, Y; Fukuda, Y; Galymov, V; Ganetis, Gl; Gannaway, Fc; Gaudin, A; Gendotti, A; George, Ma; Giffin, S; Giganti, C; Gilje, K; Ghosh, Ak; Golan, T; Goldhaber, M; Gomez Cadenas, Jj; Gomi, S; Gonin, M; Grant, N; Grant, A; Gumplinger, P; Guzowski, P; Hadley, Dr; Haesler, A; Haigh, Md; Hamano, K; Hansen, C; Hansen, D; Hara, T; Harrison, Pf; Hartfiel, B; Hartz, M; Haruyama, T; Hasegawa, T; Hastings, Nc; Hatzikoutelis, A; Hayashi, K; Hayato, Y; Hearty, C; Helmer, Rl; Henderson, R; Higashi, N; Hignight, J; Hillairet, A; Hiraki, T; Hirose, E; Holeczek, J; Horikawa, S; Huang, K; Hyndman, A; Ichikawa, Ak; Ieki, K; Ieva, M; Iida, M; Ikeda, M; Ilic, J; Imber, J; Ishida, T; Ishihara, C; Ishii, T; Ives, Sj; Iwasaki, M; Iyogi, K; Izmaylov, A; Jamieson, B; Johnson, Ra; Joo, Kk; Jover Manas, Gv; Jung, Ck; Kaji, H; Kajita, T; Kakuno, H; Kameda, J; Kaneyuki, K; Karlen, D; Kasami, K; Kato, I; Kawamuko, H; Kearns, E; Khabibullin, M; Khanam, F; Khotjantsev, A; Kielczewska, D; Kikawa, T; Kim, J; Kim, Jy; Kim, Sb; Kimura, N; Kirby, B; Kisiel, J; Kitching, P; Kobayashi, T; Kogan, G; Koike, S; Konaka, A; Kormos, Ll; Korzenev, A; Koseki, K; Koshio, Y; Kouzuma, Y; Kowalik, K; Kravtsov, V; Kreslo, I; Kropp, W; Kubo, H; Kubota, J; Kudenko, Y; Kulkarni, N; Kurimoto, Y; Kurjata, R; Kutter, T; Lagoda, J; Laihem, K; Laveder, M; Lawe, M; Lee, Kp; Le, Pt; Levy, Jm; Licciardi, C; Lim, It; Lindner, T; Lister, C; Litchfield, Rp; Litos, M; Longhin, A; Lopez, Gd; Loverre, Pf; Ludovici, L; Lux, T; Macaire, M; Magaletti, Lorenzo; Mahn, K; Makida, Y; Malek, M; Manly, S; Marchionni, A; Marino, Ad; Marone, Aj; Marteau, J; Martin, Jf; Maruyama, T; Maryon, T; Marzec, J; Masliah, P; Mathie, El; Matsumura, C; Matsuoka, K; Matveev, V; Mavrokoridis, K; Mazzucato, E; Mccauley, N; Mcfarland, Ks; Mcgrew, C; Mclachlan, T; Messina, M; Metcalf, W; Metelko, C; Mezzetto, M; Mijakowski, P; Miller, Ca; Minamino, A; Mineev, O; Mine, S; Missert, Ad; Mituka, G; Miura, M; Mizouchi, K; Monfregola, L; Moreau, F; Morgan, B; Moriyama, S; Muir, A; Murakami, A; Muratore, Jf; Murdoch, M; Murphy, S; Myslik, J; Nagai, N; Nakadaira, T; Nakahata, M; Nakai, T; Nakajima, K; Nakamoto, T; Nakamura, K; Nakayama, S; Nakaya, T; Naples, D; Navin, Ml; Nicholls, Tc; Nielsen, B; Nielsen, C; Nishikawa, K; Nishino, H; Nitta, K; Nobuhara, T; Nowak, Ja; Obayashi, Y; Ogitsu, T; Ohhata, H; Okamura, T; Okumura, K; Okusawa, T; Oser, Sm; Otani, M; Owen, Ra; Oyama, Y; Ozaki, T; Pac, My; Palladino, V; Paolone, V; Paul, P; Payne, D; Pearce, Gf; Perkin, Jd; Pettinacci, V; Pierre, F; Poplawska, E; Popov, B; Posiadala, M; Poutissou, Jm; Poutissou, R; Przewlocki, P; Qian, W; Raaf, Jl; Radicioni, E; Ratoff, Pn; Raufer, Tm; Ravonel, M; Raymond, M; Reeves, M; Retiere, F; Robert, A; Rodrigues, Pa; Rondio, E; Roney, Jm; Rossi, B; Roth, S; Rubbia, A; Ruterbories, D; Sabouri, S; Sacco, R; Sakashita, K; Sanchez, F; Sarrat, A; Sasaki, K; Scholberg, K; Schwehr, J; Scott, M; Scully, Di; Seiya, Y; Sekiguchi, T; Sekiya, H; Shibata, M; Shimizu, Y; Shiozawa, M; Short, S; Sinclair, Pd; Siyad, M; Smith, Bm; Smith, Rj; Smy, M; Sobczyk, Jt; Sobel, H; Sorel, M; Stahl, A; Stamoulis, P; Steinmann, J; Still, B; Stone, J; Strabel, C; Sulej, R; Suzuki, A; Suzuki, K; Suzuki, S; Suzuki, Sy; Suzuki, Y; Suzuki, Y; Szeglowski, T; Szeptycka, M; Tacik, R; Tada, M; Taguchi, M; Takahashi, S; Takeda, A; Takenaga, Y; Takeuchi, Y; Tanaka, K; Tanaka, Ha; Tanaka, M; Tanaka, Mm; Tanimoto, N; Tashiro, K; Taylor, I; Terashima, A; Terhorst, D; Terri, R; Thompson, Lf; Thorley, A; Toki, W; Tobayama, S; Tomaru, T; Totsuka, Y; Touramanis, C; Tsukamoto, T; Tzanov, M; Uchida, Y; Ueno, K; Vacheret, A; Vagins, M; Vasseur, G; Veledar, O; Wachala, T; Walding, Jj; Waldron, Av; Walter, Cw; Wanderer, Pj; Wang, J; Ward, Ma; Ward, Gp; Wark, D; Wascko, Mo; Weber, A; Wendell, R; West, N; Whitehead, Lh; Wikstrom, G; Wilkes, Rj; Wilking, Mj; Williamson, Z; Wilson, Jr; Wilson, Rj; Wongjirad, T; Yamada, S; Yamada, Y; Yamamoto, A; Yamamoto, K; Yamanoi, Y; Yamaoka, H; Yamauchi, T; Yanagisawa, C; Yano, T; Yen, S; Yershov, N; Yokoyama, M; Yuan, T; Zalewska, A; Zalipska, J; Zambelli, L; Zaremba, K; Ziembicki, M; Zimmerman, Ed; Zito, M; Zmuda, J.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 85:3(2012). [10.1103/PhysRevD.85.031103]