Abe, K., Adam, J., Aihara, H. et al. (342 more authors) (2015) Neutrino oscillation physics potential of the T2K experiment. Progress of Theoretical and Experimental Physics (4). 043C01. ISSN 2050-3911
Abstract
The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle θ13θ13 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 sin22θ23sin22θ23, the octant of θ23θ23, and the mass hierarchy, in addition to the measurements of δCPδCP, sin2θ23sin2θ23, and Δm232Δm322, for various combinations of νν-mode and ν¯ν¯-mode data-taking.
With an exposure of 7.8×10217.8×1021 protons-on-target, T2K can achieve 1σσ resolution of 0.050 (0.054) on sin2θ23sin2θ23 and 0.040 (0.045)×10−3eV20.040 (0.045)×10−3eV2 on Δm232Δm322 for 100% (50%) neutrino beam mode running assuming sin2θ23=0.5sin2θ23=0.5 and Δm232=2.4×10−3eV2Δm322=2.4×10−3eV2. T2K will have sensitivity to the CP-violating phase δCPδCP at 90% C.L. or better over a significant range. For example, if sin22θ23sin22θ23 is maximal (i.e. θ23=45∘θ23=45∘) the range is −115∘<δCP<−60∘−115∘<δCP<−60∘ for normal hierarchy and +50∘<δCP<+130∘+50∘<δCP<+130∘ for inverted hierarchy. When T2K data is combined with data from the NOννA experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero δCPδCP is substantially increased compared to if each experiment is analyzed alone.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2015. Published by Oxford University Press on behalf of the Physical Society of Japan. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 03 May 2016 15:46 |
Last Modified: | 03 May 2016 15:46 |
Published Version: | http://dx.doi.org/10.1093/ptep/ptv031 |
Status: | Published |
Publisher: | Oxford University Press (OUP) |
Refereed: | Yes |
Identification Number: | 10.1093/ptep/ptv031 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99178 |