The Search for Neutrino-Antineutrino Mixing 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, thereby setting limits on relevant theoretical coefficients.

Contribution

It provides the first experimental search for sidereal modulation in neutrino-antineutrino mixing related to Lorentz invariance violation using MINOS data.

Findings

No sidereal modulation detected in neutrino rates.

Set new limits on Lorentz-violating coefficients.

Contributes to testing fundamental symmetries in particle physics.

Abstract

We searched for a sidereal modulation in the rate of neutrinos observed by the MINOS far detector. The detection of these 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.