T2K Collaboration (Including: Barker, Gary John, Boyd, Steve B., Chappell, A., Denner, P. F., Hadley, David R., Haigh, J. T. and Knight, A.). (2018) Search for CP violation in neutrino and antineutrino oscillations by the T2K experiment with 2.2×1021 protons on target. Physical Review Letters, 121 (17). 171802. doi:10.1103/PhysRevLett.121.171802

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Abstract

The T2K experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and antineutrino beams. With an exposure of 14.7(7.6)×1020 protons on target in the neutrino (antineutrino) mode, 89 νe candidates and seven anti-νe candidates are observed, while 67.5 and 9.0 are expected for δCP=0 and normal mass ordering. The obtained 2σ confidence interval for the CP-violating phase, δCP, does not include the CP-conserving cases (δCP=0, π). The best-fit values of other parameters are sin2θ23=0.526+0.032−0.036 and Δm232=2.463+0.071−0.070×10−3  eV2/c4.

Item Type:	Journal Article
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Official Date:	26 October 2018
Dates:	Date Event 26 October 2018 Published
Volume:	121
Number:	17
Article Number:	171802
DOI:	10.1103/PhysRevLett.121.171802
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access

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