Combined Analysis of Neutrino and Antineutrino Oscillations at T2K

Date

2017

Authors

Abe, K.
Hillairet, Anthony
Karlen, Dean
Myslik, Jordan William
T2K Collaboration

Journal Title

Journal ISSN

Volume Title

Publisher

Physical Review Letters

Abstract

T2K reports its first results in the search for CP violation in neutrino oscillations using appearance and disappearance channels for neutrino- and antineutrino-mode beams. The data include all runs from January 2010 to May 2016 and comprise 7.482×1020 protons on target in neutrino mode, which yielded in the far detector 32 e-like and 135  μ-like events, and 7.471×1020 protons on target in antineutrino mode, which yielded 4 e-like and 66  μ-like events. Reactor measurements of sin22θ13 have been used as an additional constraint. The one-dimensional confidence interval at 90% for the phase δCP spans the range (−3.13, −0.39) for normal mass ordering. The CP conservation hypothesis (δCP=0, π) is excluded at 90% C.L.

Description

Keywords

Neutrino oscillations, CP violation, Neutrino detectors

Citation

Abe, K.; Amey, J.; Andreopoulos, C.; Antonova, M.; Aoki, S.; Ariga, A.; … & Żmuda, J. (2017). Combined analysis of neutrino and antineutrino oscillations at T2K. Physical Review Letters, 118(15), article 151801. DOI: 10.1103/PhysRevLett.118.151801