Precise measurement of the neutrino mixing parameter θ23 from muon neutrino disappearance in an off-axis beam.

Published

Journal Article

New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter θ23. Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to 6.57×10(20) protons on target, T2K has fit the energy-dependent νμ oscillation probability to determine oscillation parameters. The 68% confidence limit on sin(2)(θ23) is 0.514(-0.056)(+0.055) (0.511±0.055), assuming normal (inverted) mass hierarchy. The best-fit mass-squared splitting for normal hierarchy is Δm32(2)=(2.51±0.10)×10(-3)  eV(2)/c(4) (inverted hierarchy: Δm13(2)=(2.48±0.10)×10(-3)  eV(2)/c(4)). Adding a model of multinucleon interactions that affect neutrino energy reconstruction is found to produce only small biases in neutrino oscillation parameter extraction at current levels of statistical uncertainty.

Full Text

Duke Authors

Cited Authors

  • Abe, K; Adam, J; Aihara, H; Akiri, T; Andreopoulos, C; Aoki, S; Ariga, A; Ariga, T; Assylbekov, S; Autiero, D; Barbi, M; Barker, GJ; Barr, G; Bass, M; Batkiewicz, M; Bay, F; Bentham, SW; Berardi, V; Berger, BE; Berkman, S; Bertram, I; Bhadra, S; Blaszczyk, FDM; Blondel, A; Bojechko, C; Bordoni, S; Boyd, SB; Brailsford, D; Bravar, A; Bronner, C; Buchanan, N; Calland, RG; Caravaca Rodríguez, J; Cartwright, SL; Castillo, R; Catanesi, MG; Cervera, A; Cherdack, D; Christodoulou, G; Clifton, A; Coleman, J; Coleman, SJ; Collazuol, G; Connolly, K; Cremonesi, L; Dabrowska, A; Danko, I; Das, R; Davis, S; de Perio, P; De Rosa, G; Dealtry, T; Dennis, SR; 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, AJ; Floetotto, L; Friend, M; Fujii, Y; Fukuda, Y; Furmanski, AP; Galymov, V; Giffin, S; Giganti, C; Gilje, K; Goeldi, D; Golan, T; Gonin, M; Grant, N; Gudin, D; Hadley, DR; Haesler, A; Haigh, MD; Hamilton, P; Hansen, D; Hara, T; Hartz, M; Hasegawa, T; Hastings, NC; Hayato, Y; Hearty, C; Helmer, RL; Hierholzer, M; Hignight, J; Hillairet, A; Himmel, A; Hiraki, T; Hirota, S; Holeczek, J; Horikawa, S; Huang, K; Ichikawa, AK; Ieki, K; Ieva, M; Ikeda, M; Imber, J; Insler, J; Irvine, TJ; Ishida, T; Ishii, T; Ives, SJ; Iwai, E; Iyogi, K; Izmaylov, A; Jacob, A; Jamieson, B; Johnson, RA; Jo, JH; Jonsson, P; Jung, CK; Kabirnezhad, M; Kaboth, AC; 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; Kisiel, J; Kitching, P; Kobayashi, T; Koch, L; Kolaceke, A; Konaka, A; Kormos, LL; Korzenev, A; Koseki, K; Koshio, Y; Kreslo, I; Kropp, W; Kubo, H; Kudenko, Y; Kumaratunga, S; Kurjata, R; Kutter, T; Lagoda, J; Laihem, K; Lamont, I; Laveder, M; Lawe, M; Lazos, M; Lee, KP; Lindner, T; Lister, C; Litchfield, RP; Longhin, A; Ludovici, L; Macaire, M; Magaletti, L; Mahn, K; Malek, M; Manly, S; Marino, AD; Marteau, J; Martin, JF; Maruyama, T; Marzec, J; Mathie, EL; Matveev, V; Mavrokoridis, K; Mazzucato, E; McCarthy, M; McCauley, N; McFarland, KS; McGrew, C; Metelko, C; Mezzetto, M; Mijakowski, P; Miller, CA; Minamino, A; Mineev, O; Mine, S; Missert, A; Miura, M; Monfregola, L; Moriyama, S; Mueller, TA; 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, HM; Ohta, R; Okumura, K; Okusawa, T; Oryszczak, W; Oser, SM; Owen, RA; Oyama, Y; Palladino, V; Palomino, J; Paolone, V; Payne, D; Perevozchikov, O; Perkin, JD; Petrov, Y; Pickard, L; Pinzon Guerra, ES; Pistillo, C; Plonski, P; Poplawska, E; Popov, B; Posiadala, M; Poutissou, J-M; Poutissou, R; Przewlocki, P; Quilain, B; Radicioni, E; Ratoff, PN; Ravonel, M; Rayner, MAM; Redij, A; Reeves, M; Reinherz-Aronis, E; Retiere, F; Robert, A; Rodrigues, PA; Rojas, P; Rondio, E; Roth, S; Rubbia, A; Ruterbories, D; Sacco, R; Sakashita, K; Sánchez, F; Sato, F; Scantamburlo, E; Scholberg, K; Schoppmann, S; Schwehr, J; Scott, M; Seiya, Y; Sekiguchi, T; Sekiya, H; Sgalaberna, D; Shiozawa, M; Short, S; Shustrov, Y; Sinclair, P; Smith, B; Smith, RJ; Smy, M; Sobczyk, JT; Sobel, H; Sorel, M; Southwell, L; Stamoulis, P; Steinmann, J; Still, B; Suda, Y; Suzuki, A; Suzuki, K; Suzuki, SY; Suzuki, Y; Szeglowski, T; Tacik, R; Tada, M; Takahashi, S; Takeda, A; Takeuchi, Y; Tanaka, HK; Tanaka, HA; Tanaka, MM; Terhorst, D; Terri, R; Thompson, LF; 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, AV; Walter, CW; Wark, D; Wascko, MO; Weber, A; Wendell, R; Wilkes, RJ; Wilking, MJ; Wilkinson, C; Williamson, Z; Wilson, JR; Wilson, RJ; Wongjirad, T; Yamada, Y; Yamamoto, K; Yanagisawa, C; Yen, S; Yershov, N; Yokoyama, M; Yuan, T; Yu, M; Zalewska, A; Zalipska, J; Zambelli, L; Zaremba, K; Ziembicki, M; Zimmerman, ED; Zito, M; Żmuda, J; T2K Collaboration,

Published Date

  • May 8, 2014

Published In

Volume / Issue

  • 112 / 18

Start / End Page

  • 181801 -

PubMed ID

  • 24856687

Pubmed Central ID

  • 24856687

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.112.181801

Language

  • eng