Measurement of Neutrino Oscillation Parameters from Muon Neutrino Disappearance with an Off-Axis Beam

Abe, K; Adam, J; Aihara, H; Akiri, T; 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, Vincenzo; Berger, B. E.; Berkman, S; Bertram, I; Bhadra, S; Blaszczyk, F. D. M.; Blondel, A; Bojechko, C; Bordoni, S; Boyd, S. B.; Brailsford, D; Bravar, A; Bronner, C; Buchanan, N; Calland, R. G.; Caravaca Rodriguez, 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; de Perio, P; De Rosa, G; Dealtry, T; Dennis, S. R.; Densham, C; Di Lodovico, F; Di Luise, S; Drapier, O; Duboyski, T; Duffy, K; Dufour, F; Dumarchez, J; Dytman, S; Dziewiecki, M; Emery, S; Ereditato, A; Escudero, L; Finch, A. J.; Frank, E; Friend, M; Fujii, Y; Fukuda, Y; Furmanski, A. P.; 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.; J. H., Jo; Jonsson, P; Joo, K. K.; Jung, C. K.; Kaboth, A. C.; Kajita, T; Kakuno, H; Kameda, J; Kanazawa, Y; Karlen, D; Karpikov, I; Kearns, E; Khabibullin, M; Khotjantsev, A; Kielczewska, D; Kikawa, T; Kilinski, A; Kim, J; Kim, S. B.; Kisiel, J; Kitching, P; Kobayashi, T; Kogan, G; Kolaceke, A; Konaka, A; Kormos, L. L.; Korzenev, A; Koseki, K; Koshio, Y; Kreslo, I; Kropp, W; Kubo, H; Kudenko, Y; Kumaratunga, S; Kurjata, R; Kutter, T; Lagoda, J; Laihem, K; 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, Lorenzo; Mahn, K; Malek, M; Manly, S; Marino, A. D.; Marteau, J; Martin, J. F.; Maruyama, T; Marzec, J; Masliah, P; Mathie, E. L.; Matveev, V; Mavrokoridis, K; Mazzucato, E; Mccarthy, M; Mccauley, N; Mcfarland, K. S.; Mcgrew, C; Metelko, C; Mijakowski, P; Miller, C. A.; Minamino, A; Mineev, O; Mine, S; Missert, A; Miura, M; Monfregola, L; Moriyama, S; Mueller Th, A; Murakami, A; Murdoch, M; Murphy, S; Myslik, J; Nagasaki, T; Nakadaira, T; Nakahata, M; Nakai, T; Nakamura, K; Nakayama, S; Nakaya, T; Nakayoshi, K; Naples, D; Nielsen, C; Nirkko, M; Nishikawa, K; Nishimura, Y; O'Keeffe, H. M.; 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.; Pistillo, C; 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.; Redij, A; Reeves, M; Reinherz Aronis, E; Retiere, F; Robert, A; Rodrigues, P. A.; Rondio, E; Roth, S; Rubbia, A; Ruterbories, D; Sacco, R; Sakashita, K; Sanchez, F; Sato, F; Scantamburlo, E; Scholberg, K; Schwehr, J; Scott, M; Seiya, Y; Sekiguchi, T; Sekiya, H; Sgalaberna, D; 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; Suda, Y; Suzuki, A; Suzuki, K; Suzuki, S. Y.; Suzuki, Y; Szeglowski, T; Tacik, R; Tada, M; Takahashi, S; Takeda, A; Takeuchi, Y; Tanaka, H. K.; Tanaka, H. A.; Tanaka, M. 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; Zalipska, J; Zambelli, L; Zaremba, K; Ziembicki, M; Zimmerman, E. D.; Zito, M; Muda, J. Z.

doi:10.1103/PhysRevLett.111.211803

The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01 x 10(20) protons on target. In the absence of neutrino oscillations, 205 +/- 17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin(2) (theta(23)) = 0.514 +/- 0.082 and mass splitting vertical bar Delta m(32)(2)vertical bar = 2.44(-0.15)(+0.17) x 10(-3) eV(2)/c(4). Our result corresponds to the maximal oscillation disappearance probability.

Measurement of Neutrino Oscillation Parameters from Muon Neutrino Disappearance with an Off-Axis Beam / Abe, K; Adam, J; Aihara, H; Akiri, T; 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, Vincenzo; Berger, B. E.; Berkman, S; Bertram, I; Bhadra, S; Blaszczyk, F. D. M.; Blondel, A; Bojechko, C; Bordoni, S; Boyd, S. B.; Brailsford, D; Bravar, A; Bronner, C; Buchanan, N; Calland, R. G.; Caravaca Rodriguez, 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; de Perio, P; De Rosa, G; Dealtry, T; Dennis, S. R.; Densham, C; Di Lodovico, F; Di Luise, S; Drapier, O; Duboyski, T; Duffy, K; Dufour, F; Dumarchez, J; Dytman, S; Dziewiecki, M; Emery, S; Ereditato, A; Escudero, L; Finch, A. J.; Frank, E; Friend, M; Fujii, Y; Fukuda, Y; Furmanski, A. P.; 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. C.; Kajita, T; Kakuno, H; Kameda, J; Kanazawa, Y; Karlen, D; Karpikov, I; Kearns, E; Khabibullin, M; Khotjantsev, A; Kielczewska, D; Kikawa, T; Kilinski, A; Kim, J; Kim, S. B.; Kisiel, J; Kitching, P; Kobayashi, T; Kogan, G; Kolaceke, A; Konaka, A; Kormos, L. L.; Korzenev, A; Koseki, K; Koshio, Y; Kreslo, I; Kropp, W; Kubo, H; Kudenko, Y; Kumaratunga, S; Kurjata, R; Kutter, T; Lagoda, J; Laihem, K; 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, Lorenzo; Mahn, K; Malek, M; Manly, S; Marino, A. D.; Marteau, J; Martin, J. F.; Maruyama, T; Marzec, J; Masliah, P; Mathie, E. L.; Matveev, V; Mavrokoridis, K; Mazzucato, E; Mccarthy, M; Mccauley, N; Mcfarland, K. S.; Mcgrew, C; Metelko, C; Mijakowski, P; Miller, C. A.; Minamino, A; Mineev, O; Mine, S; Missert, A; Miura, M; Monfregola, L; Moriyama, S; Mueller Th, A; Murakami, A; Murdoch, M; Murphy, S; Myslik, J; Nagasaki, T; Nakadaira, T; Nakahata, M; Nakai, T; Nakamura, K; Nakayama, S; Nakaya, T; Nakayoshi, K; Naples, D; Nielsen, C; Nirkko, M; Nishikawa, K; Nishimura, Y; O'Keeffe, H. M.; 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.; Pistillo, C; 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.; Redij, A; Reeves, M; Reinherz Aronis, E; Retiere, F; Robert, A; Rodrigues, P. A.; Rondio, E; Roth, S; Rubbia, A; Ruterbories, D; Sacco, R; Sakashita, K; Sanchez, F; Sato, F; Scantamburlo, E; Scholberg, K; Schwehr, J; Scott, M; Seiya, Y; Sekiguchi, T; Sekiya, H; Sgalaberna, D; 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; Suda, Y; Suzuki, A; Suzuki, K; Suzuki, S. Y.; Suzuki, Y; Szeglowski, T; Tacik, R; Tada, M; Takahashi, S; Takeda, A; Takeuchi, Y; Tanaka, H. K.; Tanaka, H. A.; Tanaka, M. 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; Zalipska, J; Zambelli, L; Zaremba, K; Ziembicki, M; Zimmerman, E. D.; Zito, M; Muda, J. Z.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - ELETTRONICO. - 111:21(2013). [10.1103/PhysRevLett.111.211803]