The Search for Neutrino-Antineutrino Mixing Resulting from Lorentz Invariance Violation using neutrino interactions in MINOS

TL;DR

This study searched for sidereal variations in neutrino detection rates to identify potential Lorentz and CPT violation effects, but found no evidence, setting the first limits on neutrino-antineutrino mixing coefficients.

Contribution

First experimental limits on neutrino-antineutrino mixing coefficients related to Lorentz and CPT violation using MINOS neutrino data.

Findings

No sidereal modulation detected in neutrino rates

Set the first limits on neutrino-antineutrino mixing coefficients

Constrained Lorentz and CPT violation effects in neutrino interactions

Abstract

We searched for a sidereal modulation in the rate of neutrinos produced by the NuMI beam and observed by the MINOS far detector. The detection of such harmonic signals could be a signature of neutrino-antineutrino mixing due to Lorentz and CPT violation as described by the Standard Model Extension framework. We found no evidence for these sidereal signals and we placed limits on the coefficients in this theory describing the effect. This is the first report of limits on these neutrino-antineutrino mixing coefficients.