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

(T2K Collaboration)

Research output: Contribution to journalArticle

9 Citations (Scopus)

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 1020 at the GeV scale.

Original languageEnglish
Article number111101
JournalPhysical Review D
Volume95
Issue number11
DOIs
Publication statusPublished - Jun 1 2017

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sidereal time
time dependence
neutrinos
modulation
detectors
symmetry
interactions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline. / (T2K Collaboration).

In: Physical Review D, Vol. 95, No. 11, 111101, 01.06.2017.

Research output: Contribution to journalArticle

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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 1020 at the GeV scale.",
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AU - Campbell, T.

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