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

Ariga, Akitaka; Ereditato, Antonio; Hierholzer, Martin; Nirkko, Martti; Pistillo, Ciro; Redij, Asmita Ajit; Wilkinson, Callum (2017). Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline. Physical review. D - particles, fields, gravitation, and cosmology, 95(11) American Physical Society 10.1103/PhysRevD.95.111101

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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 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Ariga, Akitaka; Ereditato, Antonio; Hierholzer, Martin; Nirkko, Martti; Pistillo, Ciro; Redij, Asmita Ajit and Wilkinson, Callum

Subjects:

500 Science > 530 Physics

ISSN:

1550-7998

Publisher:

American Physical Society

Language:

German

Submitter:

Ciro Pistillo

Date Deposited:

26 Mar 2018 08:29

Last Modified:

26 Mar 2018 08:37

Publisher DOI:

10.1103/PhysRevD.95.111101

ArXiv ID:

1703.01361v2

Additional Information:

T2K Collaboration: Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.112817

URI:

https://boris.unibe.ch/id/eprint/112817

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