@article{f8ecde7cbf554b2d990201e44f1bdba5,
title = "T2K measurements of muon neutrino and antineutrino disappearance using 3.13×1021 protons on target",
abstract = "We report measurements by the T2K experiment of the parameters θ23 and Δm322, which govern the disappearance of muon neutrinos and antineutrinos in the three-flavor PMNS neutrino oscillation model at T2K's neutrino energy and propagation distance. Utilizing the ability of the experiment to run with either a mainly neutrino or a mainly antineutrino beam, muon-like events from each beam mode are used to measure these parameters separately for neutrino and antineutrino oscillations. Data taken from 1.49×1021 protons on target (POT) in neutrino mode and 1.64×1021 POT in antineutrino mode are used. The best-fit values obtained by T2K were sin2(θ23)=0.51-0.07+0.06(0.43-0.05+0.21) and Δm322=2.47-0.09+0.08(2.50-0.13+0.18)×10-3 eV2/c4 for neutrinos (antineutrinos). No significant differences between the values of the parameters describing the disappearance of muon neutrinos and antineutrinos were observed. An analysis using an effective two-flavor neutrino oscillation model where the sine of the mixing angle is allowed to take nonphysical values larger than 1 is also performed to check the consistency of our data with the three-flavor model. Our data were found to be consistent with a physical value for the mixing angle.",
author = "{(The T2K Collaboration)} and K. Abe and N. Akhlaq and R. Akutsu and A. Ali and C. Alt and C. Andreopoulos and M. Antonova and S. Aoki and T. Arihara and Y. Asada and Y. Ashida and Atkin, {E. T.} and Y. Awataguchi and Barker, {G. J.} and G. Barr and D. Barrow and M. Batkiewicz-Kwasniak and A. Beloshapkin and F. Bench and V. Berardi and L. Berns and S. Bhadra and A. Blondel and S. Bolognesi and T. Bonus and B. Bourguille and Boyd, {S. B.} and A. Bravar and {Bravo Bergu{\~n}o}, D. and C. Bronner and S. Bron and A. Bubak and {Buizza Avanzini}, M. and S. Cao and Cartwright, {S. L.} and Catanesi, {M. G.} and A. Cervera and D. Cherdack and G. Christodoulou and M. Cicerchia and J. Coleman and G. Collazuol and L. Cook and D. Coplowe and A. Cudd and {De Rosa}, G. and T. Dealtry and Delogu, {C. C.} and Dennis, {S. R.} and Y. Nishimura",
note = "Funding Information: We thank the J-PARC staff for superb accelerator performance. We thank the CERN NA61/SHINE Collaboration for providing valuable particle production data. We acknowledge the support of MEXT, Japan; NSERC (Grant No. SAPPJ-2014-00031), the NRC and CFI, Canada; the CEA and CNRS/IN2P3, France; the DFG, Germany; the INFN, Italy; the National Science Centre and Ministry of Science and Higher Education, Poland; the RSF (Grant No. 19-12-00325) and the Ministry of Science and Higher Education, Russia; MINECO and ERDF funds, Spain; the SNSF and State Secretary for Research and Innovation (SERI), Switzerland; the STFC, UK; and the DOE, USA. We also thank CERN for the UA1/NOMAD magnet, DESY for the HERA-B magnet mover system, NII for SINET5, the WestGrid and SciNet consortia in Compute Canada, and GridPP in the United Kingdom. In addition, participation of individual researchers and institutions has been further supported by funds from the ERC (FP7), la Caixa Foundation (ID 100010434, fellowship code LCF/BQ/IN17/11620050), the European Unions Horizon 2020 Research and Innovation Programme under Marie Sklodowska-Curie Grant Agreement No. 713673 and No. 754496, and H2020 Grant No. RISE-GA822070-JENNIFER2 2020 and No. RISE-GA872549-SK2HK; the JSPS, Japan; the Royal Society, UK; French ANR Grant No. ANR-19-CE31-0001; and the DOE Early Career program, USA. Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",
year = "2021",
month = jan,
day = "29",
doi = "10.1103/PhysRevD.103.L011101",
language = "English",
volume = "103",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "1",
}