CERN Accelerating science

Article
Report number arXiv:2101.03779
Title Improved constraints on neutrino mixing from the T2K experiment with $\mathbf{3.13\times10^{21}}$ protons on target
Author(s)

Abe, K. (Kamioka Observ.) ; Akhlaq, N. (Queen Mary, U. of London) ; Akutsu, R. (Tokyo U., IPMU) ; Ali, A. (Kyoto U.) ; Alt, C. (Zurich, ETH) ; Andreopoulos, C. (Rutherford ; Liverpool U.) ; Antonova, M. (Valencia U., IFIC) ; Aoki, S. (Kobe U.) ; Arihara, T. (Tokyo Metropolitan U.) ; Asada, Y. (Yokohama Natl. U.) ; Ashida, Y. (Kyoto U.) ; Atkin, E.T. (Imperial Coll., London) ; Awataguchi, Y. (Tokyo Metropolitan U.) ; Barker, G.J. (Warwick U.) ; Barr, G. (Oxford U.) ; Barrow, D. (Oxford U.) ; Batkiewicz-Kwasniak, M. (Cracow, INP) ; Beloshapkin, A. (Moscow, INR) ; Bench, F. (Liverpool U.) ; Berardi, V. (Bari Polytechnic ; INFN, Bari) ; Berns, L. (Tokyo Inst. Tech.) ; Bhadra, S. (York U., Canada) ; Blanchet, A. (Paris U., VI-VII) ; Blondel, A. (Paris U., VI-VII ; Geneva U.) ; Bolognesi, S. (IRFU, Saclay) ; Bonus, T. (Wroclaw U.) ; Bourguille, B. (Barcelona, IFAE) ; Boyd, S.B. (Warwick U.) ; Bravar, A. (Geneva U.) ; Berguño, D. Bravo (Madrid, Autonoma U.) ; Bronner, C. (Kamioka Observ.) ; Bron, S. (Geneva U.) ; Bubak, A. (Silesia U.) ; Avanzini, M. Buizza (Ecole Polytechnique) ; Cao, S. (KEK, Tsukuba) ; Cartwright, S.L. (Sheffield U.) ; Catanesi, M.G. (Bari Polytechnic ; INFN, Bari) ; Cervera, A. (Valencia U., IFIC) ; Cherdack, D. (Houston U.) ; Christodoulou, G. (CERN) ; Cicerchia, M. (INFN, Padua ; Padua U.) ; Coleman, J. (Liverpool U.) ; Collazuol, G. (INFN, Padua ; Padua U.) ; Cook, L. (Oxford U. ; Tokyo U., IPMU) ; Coplowe, D. (Oxford U.) ; Cudd, A. (Colorado U.) ; De Rosa, G. (INFN, Naples ; Naples U.) ; Dealtry, T. (Lancaster U.) ; Delogu, C.C. (INFN, Padua ; Padua U.) ; Dennis, S.R. (Liverpool U.) ; Densham, C. (Rutherford) ; Dergacheva, A. (Moscow, INR) ; Di Lodovico, F. (King's Coll. London) ; Dolan, S. (CERN) ; Douqa, D. (Geneva U.) ; Doyle, T.A. (Lancaster U.) ; Dumarchez, J. (Paris U., VI-VII) ; Dunne, P. (Imperial Coll., London) ; Eguchi, A. (Tokyo U.) ; Eklund, L. (Glasgow U.) ; Emery-Schrenk, S. (IRFU, Saclay) ; Ereditato, A. (U. Bern, AEC) ; Finch, A.J. (Lancaster U.) ; Fiorillo, G. (INFN, Naples ; Naples U.) ; Francois, C. (U. Bern, AEC) ; Friend, M. (KEK, Tsukuba) ; Fujii, Y. (KEK, Tsukuba) ; Fukuda, R. (Tokyo U. of Sci., Noda Campus) ; Fukuda, Y. (Miyagi U. of Education) ; Fusshoeller, K. (Zurich, ETH) ; Giganti, C. (Paris U., VI-VII) ; Gonin, M. (Ecole Polytechnique) ; Gorin, A. (Moscow, INR) ; Grassi, M. (INFN, Padua ; Padua U.) ; Guigue, M. (Paris U., VI-VII) ; Hadley, D.R. (Warwick U.) ; Hamacher-Baumann, P. (Aachen, Tech. Hochsch.) ; Harris, D.A. (York U., Canada) ; Hartz, M. (TRIUMF ; Tokyo U., IPMU) ; Hasegawa, T. (KEK, Tsukuba) ; Hassani, S. (IRFU, Saclay) ; Hastings, N.C. (KEK, Tsukuba) ; Hayato, Y. (Kamioka Observ. ; Tokyo U., IPMU) ; Hiramoto, A. (Kyoto U.) ; Hogan, M. (Colorado State U.) ; Holeczek, J. (Silesia U.) ; Van, N.T. Hong (IFIRSE, Quy Nhon ; Hanoi, Inst. Phys.) ; Honjo, T. (Osaka City U.) ; Iacob, F. (INFN, Padua ; Padua U.) ; Ichikawa, A.K. (Kyoto U.) ; Ikeda, M. (Kamioka Observ.) ; Ishida, T. (KEK, Tsukuba) ; Ishitsuka, M. (Tokyo U. of Sci., Noda Campus) ; Iwamoto, K. (Tokyo U.) ; Izmaylov, A. (Moscow, INR) ; Izumi, N. (Tokyo U. of Sci., Noda Campus) ; Jakkapu, M. (KEK, Tsukuba) ; Jamieson, B. (Winnipeg U.) ; Jenkins, S.J. (Sheffield U.) ; Jes, C. ; Jesus-Valls, C. (Barcelona, IFAE) ; Jonsson, P. (Imperial Coll., London) ; Jung, C.K. (SUNY, Stony Brook) ; Jurj, P.B. (Imperial Coll., London) ; Kabirnezhad, M. (Oxford U.) ; Kakuno, H. (Tokyo Metropolitan U.) ; Kameda, J. (Kamioka Observ.) ; Kasetti, S.P. (Louisiana State U.) ; Kataoka, Y. (Kamioka Observ.) ; Katayama, Y. (Yokohama Natl. U.) ; Katori, T. (King's Coll. London) ; Kearns, E. (Boston U. ; Tokyo U., IPMU) ; Khabibullin, M. (Moscow, INR) ; Khotjantsev, A. (Moscow, INR) ; Kikawa, T. (Kyoto U.) ; Kikutani, H. (Tokyo U.) ; King, S. (King's Coll. London) ; Kisiel, J. (Silesia U.) ; Kobata, T. (Osaka City U.) ; Kobayashi, T. (KEK, Tsukuba) ; Koch, L. (Oxford U.) ; Konaka, A. (TRIUMF) ; Kormos, L.L. (Lancaster U.) ; Koshio, Y. (Okayama U.) ; Kostin, A. (Moscow, INR) ; Kowalik, K. (NCBJ, Swierk) ; Kudenko, Y. (Moscow, INR) ; Kuribayashi, S. (Kyoto U.) ; Kurjata, R. (Warsaw U. of Tech.) ; Kutter, T. (Louisiana State U.) ; Kuze, M. (Tokyo Inst. Tech.) ; Labarga, L. (Madrid, Autonoma U.) ; Lagoda, J. (NCBJ, Swierk) ; Lamoureux, M. (INFN, Padua ; Padua U.) ; Last, D. (Pennsylvania U.) ; Laveder, M. (INFN, Padua ; Padua U.) ; Lawe, M. (Lancaster U.) ; Litchfield, R.P. (Glasgow U.) ; Liu, S.L. (SUNY, Stony Brook) ; Longhin, A. (INFN, Padua ; Padua U.) ; Ludovici, L. (INFN, Rome ; Rome U.) ; Lu, X. (Oxford U.) ; Lux, T. (Barcelona, IFAE) ; Machado, L.N. (INFN, Naples ; Naples U.) ; Magaletti, L. (Bari Polytechnic ; INFN, Bari) ; Mahn, K. (Michigan State U.) ; Malek, M. (Sheffield U.) ; Manly, S. (Rochester U.) ; Maret, L. (Geneva U.) ; Marino, A.D. (Colorado U.) ; Marti-Magro, L. (Kamioka Observ. ; Tokyo U., IPMU) ; Maruyama, T. (KEK, Tsukuba) ; Matsubara, T. (KEK, Tsukuba) ; Matsushita, K. (Tokyo U.) ; Mauger, C. (Pennsylvania U.) ; Mavrokoridis, K. (Liverpool U.) ; Mazzucato, E. (IRFU, Saclay) ; McCauley, N. (Liverpool U.) ; McElwee, J. (Sheffield U.) ; McFarland, K.S. (Rochester U.) ; McGrew, C. (SUNY, Stony Brook) ; Mefodiev, A. (Moscow, INR) ; Mezzetto, M. (INFN, Padua ; Padua U.) ; Minamino, A. (Yokohama Natl. U.) ; Mineev, O. (Moscow, INR) ; Mine, S. (UC, Irvine) ; Miura, M. (Kamioka Observ.) ; Bueno, L. Molina (Zurich, ETH) ; Moriyama, S. (Kamioka Observ.) ; Mueller, Th.A. (Ecole Polytechnique) ; Munteanu, L. (IRFU, Saclay) ; Nagai, Y. (Colorado U.) ; Nakadaira, T. (KEK, Tsukuba) ; Nakahata, M. (Kamioka Observ. ; Tokyo U., IPMU) ; Nakajima, Y. (Kamioka Observ.) ; Nakamura, A. (Okayama U.) ; Nakamura, K. (Tokyo U., IPMU ; KEK, Tsukuba) ; Nakano, Y. (Kobe U.) ; Nakayama, S. (Kamioka Observ. ; Tokyo U., IPMU) ; Nakaya, T. (Kyoto U. ; Tokyo U., IPMU) ; Nakayoshi, K. (KEK, Tsukuba) ; Naseby, C.E.R. (Imperial Coll., London) ; Ngoc, T.V. (IFIRSE, Quy Nhon) ; Nguyen, V.Q. (Paris U., VI-VII) ; Niewczas, K. (Wroclaw U.) ; Nishimura, Y. (Keio U.) ; Noah, E. (Geneva U.) ; Nonnenmacher, T.S. (Imperial Coll., London) ; Nova, F. (Rutherford) ; Nowak, J. (Lancaster U.) ; Nugent, J.C. (Glasgow U.) ; O'Keeffe, H.M. (Lancaster U.) ; O'Sullivan, L. (Sheffield U.) ; Odagawa, T. (Kyoto U.) ; Ogawa, T. (KEK, Tsukuba) ; Okada, R. (Okayama U.) ; Okumura, K. (Tokyo U., ICRR ; Tokyo U., IPMU) ; Okusawa, T. (Osaka City U.) ; Owen, R.A. (Queen Mary, U. of London) ; Oyama, Y. (KEK, Tsukuba) ; Palladino, V. (INFN, Naples ; Naples U.) ; Paolone, V. (Pittsburgh U.) ; Pari, M. (INFN, Padua ; Padua U.) ; Parker, W.C. (Royal Holloway, U. of London) ; Parsa, S. (Geneva U.) ; Pasternak, J. (Imperial Coll., London) ; Pavin, M. (TRIUMF) ; Payne, D. (Liverpool U.) ; Penn, G.C. (Liverpool U.) ; Pickering, L. (Michigan State U.) ; Pidcott, C. (Sheffield U.) ; Pintaudi, G. (Yokohama Natl. U.) ; Pistillo, C. (U. Bern, AEC) ; Popov, B. (Paris U., VI-VII) ; Porwit, K. (Silesia U.) ; Posiadala-Zezula, M. (Warsaw U.) ; Pritchard, A. (Liverpool U.) ; Quilain, B. (Ecole Polytechnique) ; Radermacher, T. (Aachen, Tech. Hochsch.) ; Radicioni, E. (Bari Polytechnic ; INFN, Bari) ; Radics, B. (Zurich, ETH) ; Ratoff, P.N. (Lancaster U.) ; Riccio, C. (SUNY, Stony Brook) ; Rondio, E. (NCBJ, Swierk) ; Roth, S. (Aachen, Tech. Hochsch.) ; Rubbia, A. (Zurich, ETH) ; Ruggeri, A.C. (INFN, Naples ; Naples U.) ; Ruggles, C. (Glasgow U.) ; Rychter, A. (Warsaw U. of Tech.) ; Sakashita, K. (KEK, Tsukuba) ; Sanchez, F. (Geneva U.) ; Santucci, G. (York U., Canada) ; Schloesser, C.M. (Zurich, ETH) ; Scholberg, K. (Duke U.) ; Scott, M. (Imperial Coll., London) ; Seiya, Y. (Osaka City U.) ; Sekiguchi, T. (KEK, Tsukuba) ; Sekiya, H. (Kamioka Observ. ; Tokyo U., IPMU) ; Sgalaberna, D. (Zurich, ETH) ; Shaikhiev, A. (Moscow, INR) ; Shaykina, A. (Moscow, INR) ; Shiozawa, M. (Kamioka Observ. ; Tokyo U., IPMU) ; Shorrock, W. (Imperial Coll., London) ; Shvartsman, A. (Moscow, INR) ; Skwarczynski, K. (NCBJ, Swierk) ; Smy, M. (UC, Irvine) ; Sobczyk, J.T. (Wroclaw U.) ; Sobel, H. (UC, Irvine ; Tokyo U., IPMU) ; Soler, F.J.P. (Glasgow U.) ; Sonoda, Y. (Kamioka Observ.) ; Spina, R. (Bari Polytechnic ; INFN, Bari) ; Suvorov, S. (Moscow, INR ; Paris U., VI-VII) ; Suzuki, A. (Kobe U.) ; Suzuki, S.Y. (KEK, Tsukuba) ; Suzuki, Y. (Tokyo U., IPMU) ; Sztuc, A.A. (Imperial Coll., London) ; Tada, M. (KEK, Tsukuba) ; Tajima, M. (Kyoto U.) ; Takeda, A. (Kamioka Observ.) ; Takeuchi, Y. (Kobe U. ; Tokyo U., IPMU) ; Tanaka, H.K. (Kamioka Observ.) ; Tanihara, Y. (Yokohama Natl. U.) ; Tani, M. (Kyoto U.) ; Teshima, N. (Osaka City U.) ; Thompson, L.F. (Sheffield U.) ; Toki, W. (Colorado State U.) ; Touramanis, C. (Liverpool U.) ; Towstego, T. (Toronto U.) ; Tsui, K.M. (Liverpool U.) ; Tsukamoto, T. (KEK, Tsukuba) ; Tzanov, M. (Louisiana State U.) ; Uchida, Y. (Imperial Coll., London) ; Vagins, M. (Tokyo U., IPMU ; UC, Irvine) ; Valder, S. (Warwick U.) ; Vargas, D. (Barcelona, IFAE) ; Vasseur, G. (IRFU, Saclay) ; Vilela, C. (CERN) ; Vinning, W.G.S. (Warwick U.) ; Vladisavljevic, T. (Rutherford) ; Wachala, T. (Cracow, INP) ; Walker, J. (Winnipeg U.) ; Walsh, J.G. (Lancaster U.) ; Wang, Y. (SUNY, Stony Brook) ; Wark, D. (Rutherford ; Oxford U.) ; Wascko, M.O. (Imperial Coll., London) ; Weber, A. (Rutherford ; Oxford U.) ; Wendell, R. (Kyoto U.) ; Wilking, M.J. (SUNY, Stony Brook) ; Wilkinson, C. (U. Bern, AEC) ; Wilson, J.R. (King's Coll. London) ; Wood, K. (SUNY, Stony Brook) ; Wret, C. (Rochester U.) ; Xia, J. (Tokyo U., ICRR) ; Yamamoto, K. (Osaka City U.) ; Yanagisawa, C. (SUNY, Stony Brook) ; Yang, G. (SUNY, Stony Brook) ; Yano, T. (Kamioka Observ.) ; Yasutome, K. (Kyoto U.) ; Yershov, N. (Moscow, INR) ; Yokoyama, M. (Tokyo U.) ; Yoshida, T. (Tokyo Inst. Tech.) ; Yoshimoto, Y. (Tokyo U.) ; Yu, M. (York U., Canada) ; Zalewska, A. (Cracow, INP) ; Zalipska, J. (NCBJ, Swierk) ; Zaremba, K. (Warsaw U. of Tech.) ; Zarnecki, G. (NCBJ, Swierk) ; Ziembicki, M. (Warsaw U. of Tech.) ; Zito, M. (Paris U., VI-VII) ; Zsoldos, S. (King's Coll. London)

Publication 2021-06-17
Imprint 2021-01-11
Number of pages 59
Note Update figure formatting
In: Phys. Rev. D 103 (2021) 112008
DOI 10.1103/PhysRevD.103.112008
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment T2K
Abstract The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of $14.9 (16.4) \times 10^{20}$ protons on target in neutrino (antineutrino) mode. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. An extensive set of simulated data studies have also been performed to quantify the effect interaction model uncertainties have on the T2K oscillation parameter sensitivity. T2K performs multiple oscillation analyses that present both frequentist and Bayesian intervals for the PMNS parameters. For fits including a constraint on \ssqthonethree from reactor data and assuming normal mass ordering T2K measures $\sin^2\theta_{23} = 0.53^{+0.03}_{-0.04}$ and $\Delta{}m^2_{32} = (2.45 \pm 0.07) \times 10^{-3}$ eV$^{2}$c$^{-4}$. The Bayesian analyses show a weak preference for normal mass ordering (89% posterior probability) and the upper $\sin^2\theta_{23}$ octant (80% posterior probability), with a uniform prior probability assumed in both cases. The T2K data exclude CP conservation in neutrino oscillations at the $2\sigma$ level.
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