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

  • (T2K Collaboration)
  • Kamioka Observatory
  • University of Tokyo
  • Imperial College London
  • University of Liverpool
  • CCLRC Rutherford Appleton Laboratory
  • Institute for Nuclear Research of the Russian Academy of Sciences
  • Kobe University
  • Centre for Research and Education in Fundamental Physics
  • University of Bern
  • Colorado State University
  • IGFL, Université de Lyon, Université Lyon 1
  • Department of Physics
  • Kyoto University
  • Dipartimento di Fisica
  • Department of Physics
  • University of Regina
  • University of Warwick
  • University of Oxford
  • UPMC
  • Laboratoire de Probabilités et Modèles Aléatoires
  • Institute for Nuclear Physics
  • Politecnico di Bari
  • Departement of Physics and Astronomy
  • University of British Columbia
  • TRIUMF
  • York University
  • Section de Physique
  • University of Geneva
  • Universite Paris-Saclay
  • The Barcelona Institute of Science and Technology
  • European Organization for Nuclear Research
  • Lancaster University
  • High Energy Accelerator Research Organization (KEK)
  • The University of Sheffield
  • University of Sheffield
  • Università di Padova
  • University of Padova
  • Department of Physics
  • School of Physics and Astronomy
  • Queen Mary University of London
  • Department of Physics and Astronomy
  • Michigan State University

Research output: Contribution to journalArticlepeer-review

36 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 - 1 Jun 2017

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