Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline

Date

2017

Authors

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

Journal Title

Journal ISSN

Volume Title

Publisher

Physical Review D

Abstract

A class of extensions of the Standard Model allows Lorentz and CPT violations, which can be identified by the observation of sidereal modulations in the neutrino interaction rate. A search for such modulations was performed using the T2K on-axis near detector. Two complementary methods were used in this study, both of which resulted in no evidence of a signal. Limits on associated Lorentz and CPT-violating terms from the Standard Model extension have been derived by taking into account their correlations in this model for the first time. These results imply such symmetry violations are suppressed by a factor of more than 10^20 at the GeV scale.

Description

Keywords

Neutrino oscillations, Neutrinos, CPT symmetry, Lorentz symmetry

Citation

Abe, K.; Amey, J.; Andreopoulos, C.; Antonova, M.; Aoki, S.; Ariga, A.; … & Żmuda, J. (2017). Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline. Physical Review D, 95(11), article 111101. DOI: 10.1103/PhysRevD.95.111101