Authors
K Abe, J Adam, H Aihara, T Akiri, C Andreopoulos, S Aoki, A Ariga, T Ariga, S Assylbekov, D Autiero, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, SW Bentham, V Berardi, BE Berger, S Berkman, I Bertram, S Bhadra, F d M Blaszczyk, A Blondel, C Bojechko, S Bordoni, Steve B Boyd, D Brailsford, A Bravar, C Bronner, N Buchanan, RG Calland, J Caravaca Rodriguez, SL Cartwright, R Castillo, MG Catanesi, A Cervera, D Cherdack, G Christodoulou, A Clifton, J Coleman, SJ Coleman, Gianmaria Collazuol, K Connolly, L Cremonesi, A Dabrowska, I Danko, R Das, S Davis, P De Perio, G De Rosa, T Dealtry, SR Dennis, C Densham, F Di Lodovico, S Di Luise, O Drapier, T Duboyski, K Duffy, Frédéric Dufour, J Dumarchez, S Dytman, M Dziewiecki, S Emery, A Ereditato, L Escudero, AJ Finch, L Floetotto, M Friend, Y Fujii, Y Fukuda, Andrew P Furmanski, V Galymov, S Giffin, C Giganti, K Gilje, D Goeldi, T Golan, M Gonin, N Grant, D Gudin, David R Hadley, A Haesler, Martin David Haigh, P Hamilton, D Hansen, T Hara, M Hartz, T Hasegawa, NC Hastings, Y Hayato, C Hearty, RL Helmer, M Hierholzer, J Hignight, A Hillairet, A Himmel, T Hiraki, S Hirota, J Holeczek, S Horikawa, K Huang, AK Ichikawa, K Ieki, M Ieva, M Ikeda, J Imber, J Insler, TJ Irvine, T Ishida, T Ishii, SJ Ives, E Iwai, K Iyogi, A Izmaylov, A Jacob, B Jamieson, RA Johnson, JH Jo, P Jonsson, CK Jung, M Kabirnezhad, AC Kaboth, T Kajita, H Kakuno, J Kameda, Y Kanazawa, D Karlen, I Karpikov, E Kearns, M Khabibullin, A Khotjantsev, D Kielczewska, T Kikawa, A Kilinski, J Kim, J Kisiel, P Kitching, T Kobayashi, L Koch, A Kolaceke, A Konaka, LL Kormos, A Korzenev, K Koseki, Y Koshio, I Kreslo, W Kropp, H Kubo, Y Kudenko
Publication date
2014/5/9
Journal
Physical review letters
Volume
112
Issue
18
Pages
181801
Publisher
American Physical Society
Description
New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter . Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to protons on target, T2K has fit the energy-dependent oscillation probability to determine oscillation parameters. The 68% confidence limit on is (), assuming normal (inverted) mass hierarchy. The best-fit mass-squared splitting for normal hierarchy is (inverted hierarchy: ). 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.
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