Neutrino oscillation physics potential of the T2K experiment

The T2K Collaboration

doi:10.1093/ptep/ptv031

Neutrino oscillation physics potential of the T2K experiment

The T2K Collaboration

Physics and Astronomy

Stony Brook University

The University of Tokyo
Stony Brook University
Duke University
STFC Rutherford Appleton Laboratory (RAL)
Kobe University
University of Bern
Colorado State University
Universite Claude Bernard Lyon 1
University of Regina
University of Warwick
University of Oxford
Université Paris Cité
Institute of Nuclear Physics
Swiss Federal Institute of Technology Zurich
Polytechnic University of Bari
University of British Columbia
York University Toronto
Louisiana State University
University of Geneva
University of Victoria BC
Institute for High Energy Physics
Imperial College London
University of Liverpool
University of Sheffield
CSIC
University of Colorado Boulder
National Institute for Nuclear Physics
University of Washington
Queen Mary University of London
University of Pittsburgh

Research output: Contribution to journal › Article › peer-review

73 Scopus citations

Abstract

The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle 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 sin² 2Θ₂₃, the octant of Θ₂₃, and the mass hierarchy, in addition to the measurements of δ_CP, sin² Θ₂₃, and Δm² ₃₂, for various combinations of ν-mode and ν-mode data-taking. With an exposure of 7.8 × 10²¹ protons-on-target, T2K can achieve 1 σ resolution of 0.050 (0.054) on sin² Θ₂₃ and 0.040 (0.045) × 10^-3 eV² on Δm² ₃₂ for 100% (50%) neutrino beam mode running assuming sin² Θ₂₃ = 0.5 and Δm² ₃₂ = 2.4 × 10^-3 eV². T2K will have sensitivity to the CP-violating phase δ_CP at 90% C.L. or better over a significant range. For example, if sin² 2Θ₂₃ is maximal (i.e. Θ₂₃ = 45°) the range is -115° < δ_CP < -60° for normal hierarchy and +50° < δ_CP < +130° for inverted hierarchy. When T2K data is combined with data from the NOνA experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero δ_CP is substantially increased compared to if each experiment is analyzed alone.

Original language	English
Article number	043C01
Journal	Progress of Theoretical and Experimental Physics
Volume	2015
Issue number	4
DOIs	https://doi.org/10.1093/ptep/ptv031
State	Published - Apr 1 2015

Access to Document

10.1093/ptep/ptv031

Cite this

@article{ff980353d93744c7b23700ae534b0fc5,

title = "Neutrino oscillation physics potential of the T2K experiment",

abstract = "The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle 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 sin2 2Θ23, the octant of Θ23, and the mass hierarchy, in addition to the measurements of δCP, sin2 Θ23, and Δm2 32, for various combinations of ν-mode and ν-mode data-taking. With an exposure of 7.8 × 1021 protons-on-target, T2K can achieve 1 σ resolution of 0.050 (0.054) on sin2 Θ23 and 0.040 (0.045) × 10-3 eV2 on Δm2 32 for 100\% (50\%) neutrino beam mode running assuming sin2 Θ23 = 0.5 and Δm2 32 = 2.4 × 10-3 eV2. T2K will have sensitivity to the CP-violating phase δCP at 90\% C.L. or better over a significant range. For example, if sin2 2Θ23 is maximal (i.e. Θ23 = 45°) the range is -115° < δCP < -60° for normal hierarchy and +50° < δCP < +130° for inverted hierarchy. When T2K data is combined with data from the NOνA experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero δCP is substantially increased compared to if each experiment is analyzed alone.",

author = "\{The T2K Collaboration\} and K. Abe and J. Adam and H. Aihara and T. Akiri and C. Andreopoulos and S. Aoki and A. Ariga and S. Assylbekov and D. Autiero and M. Barbi and Barker, \{G. J.\} and G. Barr and P. Bartet-Friburg and M. Bass and M. Batkiewicz and F. Bay and V. Berardi and Berger, \{B. E.\} and S. Berkman and S. Bhadra and Blaszczyk, \{F. D.M.\} and A. Blondel and C. Bojechko and S. Bordoni and Boyd, \{S. B.\} and D. Brailsford and A. Bravar and C. Bronner and N. Buchanan and Calland, \{R. G.\} and \{Caravaca Rodr{\'i}guez\}, J. and Cartwright, \{S. L.\} and R. Castillo and Catanesi, \{M. G.\} and A. Cervera and D. Cherdack and G. Christodoulou and A. Clifton and J. Coleman and Coleman, \{S. J.\} and G. Collazuol and K. Connolly and L. Cremonesi and A. Dabrowska and I. Danko and R. Das and S. Davis and Jung, \{C. K.\} and C. McGrew and C. Riccio",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2015.",

year = "2015",

month = apr,

day = "1",

doi = "10.1093/ptep/ptv031",

language = "English",

volume = "2015",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

number = "4",

}

TY - JOUR

T1 - Neutrino oscillation physics potential of the T2K experiment

AU - The T2K Collaboration

AU - Abe, K.

AU - Adam, J.

AU - Aihara, H.

AU - Akiri, T.

AU - Andreopoulos, C.

AU - Aoki, S.

AU - Ariga, A.

AU - Assylbekov, S.

AU - Autiero, D.

AU - Barbi, M.

AU - Barker, G. J.

AU - Barr, G.

AU - Bartet-Friburg, P.

AU - Bass, M.

AU - Batkiewicz, M.

AU - Bay, F.

AU - Berardi, V.

AU - Berger, B. E.

AU - Berkman, S.

AU - Bhadra, S.

AU - Blaszczyk, F. D.M.

AU - Blondel, A.

AU - Bojechko, C.

AU - Bordoni, S.

AU - Boyd, S. B.

AU - Brailsford, D.

AU - Bravar, A.

AU - Bronner, C.

AU - Buchanan, N.

AU - Calland, R. G.

AU - Caravaca Rodríguez, J.

AU - Cartwright, S. L.

AU - Castillo, R.

AU - Catanesi, M. G.

AU - Cervera, A.

AU - Cherdack, D.

AU - Christodoulou, G.

AU - Clifton, A.

AU - Coleman, J.

AU - Coleman, S. J.

AU - Collazuol, G.

AU - Connolly, K.

AU - Cremonesi, L.

AU - Dabrowska, A.

AU - Danko, I.

AU - Das, R.

AU - Davis, S.

AU - Jung, C. K.

AU - McGrew, C.

AU - Riccio, C.

PY - 2015/4/1

Y1 - 2015/4/1

N2 - The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle 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 sin2 2Θ23, the octant of Θ23, and the mass hierarchy, in addition to the measurements of δCP, sin2 Θ23, and Δm2 32, for various combinations of ν-mode and ν-mode data-taking. With an exposure of 7.8 × 1021 protons-on-target, T2K can achieve 1 σ resolution of 0.050 (0.054) on sin2 Θ23 and 0.040 (0.045) × 10-3 eV2 on Δm2 32 for 100% (50%) neutrino beam mode running assuming sin2 Θ23 = 0.5 and Δm2 32 = 2.4 × 10-3 eV2. T2K will have sensitivity to the CP-violating phase δCP at 90% C.L. or better over a significant range. For example, if sin2 2Θ23 is maximal (i.e. Θ23 = 45°) the range is -115° < δCP < -60° for normal hierarchy and +50° < δCP < +130° for inverted hierarchy. When T2K data is combined with data from the NOνA experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero δCP is substantially increased compared to if each experiment is analyzed alone.

AB - The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle 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 sin2 2Θ23, the octant of Θ23, and the mass hierarchy, in addition to the measurements of δCP, sin2 Θ23, and Δm2 32, for various combinations of ν-mode and ν-mode data-taking. With an exposure of 7.8 × 1021 protons-on-target, T2K can achieve 1 σ resolution of 0.050 (0.054) on sin2 Θ23 and 0.040 (0.045) × 10-3 eV2 on Δm2 32 for 100% (50%) neutrino beam mode running assuming sin2 Θ23 = 0.5 and Δm2 32 = 2.4 × 10-3 eV2. T2K will have sensitivity to the CP-violating phase δCP at 90% C.L. or better over a significant range. For example, if sin2 2Θ23 is maximal (i.e. Θ23 = 45°) the range is -115° < δCP < -60° for normal hierarchy and +50° < δCP < +130° for inverted hierarchy. When T2K data is combined with data from the NOνA experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero δCP is substantially increased compared to if each experiment is analyzed alone.

UR - https://www.scopus.com/pages/publications/84929100168

U2 - 10.1093/ptep/ptv031

DO - 10.1093/ptep/ptv031

M3 - Article

SN - 2050-3911

VL - 2015

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 4

M1 - 043C01

ER -

Neutrino oscillation physics potential of the T2K experiment

Abstract

Access to Document

Other files and links

Fingerprint

Cite this