Neutrino oscillation physics potential of the T2K experiment

Abe, K. et al. (2015) Neutrino oscillation physics potential of the T2K experiment. Progress of Theoretical and Experimental Physics, 2015(4), 043C01. (doi: 10.1093/ptep/ptv031)

Abstract

The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle θ 13 θ13 have led to a re-evaluation of the physics potential of the T2K long-baseline neutrino oscillation experiment. Sensitivities are explored for CP violation in neutrinos, non-maximal sin 2 2θ 23 sin2⁡2θ23 ⁠, the octant of θ 23 θ23 ⁠, and the mass hierarchy, in addition to the measurements of δ CP δCP ⁠, sin 2 θ 23 sin2⁡θ23 ⁠, and Δm 2 32 Δm322 ⁠, for various combinations of ν ν -mode and ν ¯ ν¯ -mode data-taking. With an exposure of 7.8×10 21 7.8×1021 protons-on-target, T2K can achieve 1σ σ resolution of 0.050 (0.054) on sin 2 θ 23 sin2⁡θ23 and 0.040 (0.045)×10 −3 eV 2 0.040 (0.045)×10−3eV2 on Δm 2 32 Δm322 for 100% (50%) neutrino beam mode running assuming sin 2 θ 23 =0.5 sin2⁡θ23=0.5 and Δm 2 32 =2.4×10 −3 eV 2 Δm322=2.4×10−3eV2 ⁠. T2K will have sensitivity to the CP-violating phase δ CP δCP at 90% C.L. or better over a significant range. For example, if sin 2 2θ 23 sin2⁡2θ23 is maximal (i.e. θ 23 =45 ∘ θ23=45∘ ⁠) the range is −115 ∘ <δ CP <−60 ∘ −115∘<δCP<−60∘ for normal hierarchy and +50 ∘ <δ CP <+130 ∘ +50∘<δCP<+130∘ for inverted hierarchy. When T2K data is combined with data from the NOν ν A experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero δ CP δCP is substantially increased compared to if each experiment is analyzed alone.

• Item Type: Articles
• Additional Information: T2K Collaboration.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Litchfield, Dr Phillip
• Authors: Abe, K., Adam, J., Aihara, H., Akiri, T., Andreopoulos, C., Aoki, S., Ariga, A., Assylbekov, S., Autiero, D., Barbi, M., Barker, G.J., Barr, G., Bartet-Friburg, P., Bass, M., Batkiewicz, M., Bay, F., Berardi, V., Berger, B.E., Berkman, S., 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 Rodríguez, 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., Dabrowska, A., Danko, I., Das, R., Davis, S., de Perio, P., de Rosa, G., Dealtry, T., Dennis, S.R., Densham, C., Dewhurst, D., Di Lodovico, F., Di Luise, S., Drapier, O., Duboyski, T., Duffy, K., Dumarchez, J., Dytman, S., Dziewiecki, M., Emery-Schrenk, S., Ereditato, A., Escudero, L., Feusels, T., Finch, A.J., Fiorentini, G.A., Friend, M., Fujii, Y., Fukuda, Y., Furmanski, A.P., Galymov, V., Garcia, A., Giffin, S., Giganti, C., Gilje, K., Goeldi, D., Golan, T., Gonin, M., Grant, N., Gudin, D., Hadley, D.R., Haegel, L., Haesler, A., Haigh, M.D., Hamilton, P., Hansen, D., Hara, T., Hartz, M., Hasegawa, T., Hastings, N.C., Hayashino, T., 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., Iwai, E., Iwamoto, K., Iyogi, K., Izmaylov, A., Jacob, A., Jamieson, B., Johnson, R.A., Johnson, S., Jo, J.H., Jonsson, P., Jung, C.K., Kabirnezhad, M., Kaboth, A.C., Kajita, T., Kakuno, H., Kameda, J., Kanazawa, Y., Karlen, D., Karpikov, I., Katori, T., Kearns, E., Khabibullin, M., Khotjantsev, A., Kielczewska, D., Kikawa, T., Kilinski, A., Kim, J., King, S., Kisiel, J., Kitching, P., Kobayashi, T., Koch, L., Koga, T., Kolaceke, A., Konaka, A., Kormos, L.L., Korzenev, A., Koshio, Y., Kropp, W., Kubo, H., Kudenko, Y., Kurjata, R., Kutter, T., Lagoda, J., Laihem, K., Lamont, I., Larkin, E., Laveder, M., Lawe, M., Lazos, M., Lindner, T., Lister, C., Litchfield, R.P., Longhin, A., Lopez, J.P., Ludovici, L., Magaletti, L., Mahn, K., Malek, M., Manly, S., Marino, A.D., Marteau, J., Martin, J.F., Martins, P., Martynenko, S., Maruyama, T., Matveev, V., Mavrokoridis, K., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K.S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Mijakowski, P., Miller, C.A., Minamino, A., Mineev, O., Missert, A., Miura, M., Moriyama, S., Mueller, T.A., Murakami, A., Murdoch, M., Murphy, S., Myslik, J., Nakadaira, T., Nakahata, M., Nakamura, K.G., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Nielsen, C., Nirkko, M., Nishikawa, K., Nishimura, Y., Nowak, J., O’Keeffe, H.M., Ohta, R., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S.M., Ovsyannikova, T., Owen, R.A., Oyama, Y., Palladino, V., Palomino, J.L., Paolone, V., Payne, D., Perevozchikov, O., Perkin, J.D., Petrov, Y., Pickard, L., Pinzon Guerra, E.S., Pistillo, C., Plonski, P., Poplawska, E., Popov, B., Posiadala-Zezula, 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., Riccio, C., Rodrigues, P.A., 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., Shah, R., Shaker, F., Shiozawa, M., Short, S., Shustrov, Y., Sinclair, P., Smith, B., 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., Tacik, R., Tada, M., Takahashi, S., Takeda, A., Takeuchi, Y., Tanaka, H.K., Tanaka, H.A., Tanaka, M.M., 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., Vacheret, A., Vagins, M., Vasseur, G., Wachala, T., Waldron, A.V., Wakamatsu, K., Walter, C.W., Wark, D., Warzycha, W., 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., Yano, T., Yen, S., Yershov, N., Yokoyama, M., Yoshida, K., Yuan, T., Yu, M., Zalewska, A., Zalipska, J., Zambelli, L., Zaremba, K., Ziembicki, M., Zimmerman, E.D., Zito, M., and Żmuda, J.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Progress of Theoretical and Experimental Physics
• Publisher: Oxford University Press (OUP)
• ISSN: 2050-3911
• ISSN (Online): 2050-3911
• Copyright Holders: Copyright © 2015 The Author(s)
• First Published: First published in Progress of Theoretical and Experimental Physics 2015(4):043C01
• Publisher Policy: Reproduced under a Creative Commons License

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