Testing Lorentz Invariance and CPT Conservation with NuMI Neutrinos in the MINOS Near Detector

P. Adamson et al. (MINOS Collaboration)
Phys. Rev. Lett. 101, 151601 – Published 9 October 2008

Abstract

A search for a sidereal modulation in the MINOS near detector neutrino data was performed. If present, this signature could be a consequence of Lorentz and CPT violation as predicted by the effective field theory called the standard-model extension. No evidence for a sidereal signal in the data set was found, implying that there is no significant change in neutrino propagation that depends on the direction of the neutrino beam in a sun-centered inertial frame. Upper limits on the magnitudes of the Lorentz and CPT violating terms in the standard-model extension lie between 104 and 102 of the maximum expected, assuming a suppression of these signatures by a factor of 1017.

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  • Received 1 July 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.151601

©2008 American Physical Society

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Vol. 101, Iss. 15 — 10 October 2008

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