Exploration of Possible Quantum Gravity Effects with Neutrinos II: Lorentz Violation in Neutrino Propagation

TL;DR

This paper investigates potential Lorentz violation effects in neutrino propagation caused by quantum gravity, using supernova and neutrino experiment data to set limits on such violations.

Contribution

It provides new constraints on linear and quadratic Lorentz violation parameters in neutrino propagation based on observational data.

Findings

Limits on linear Lorentz violation parameter M_ uQG1

Limits on quadratic Lorentz violation parameter M_ uQG2

Constraints derived from supernova and OPERA neutrino data

Abstract

It has been suggested that the interactions of energetic particles with the foamy structure of space-time thought to be generated by quantum-gravitational (QG) effects might violate Lorentz invariance, so that they do not propagate at a universal speed of light. We consider the limits that may be set on a linear or quadratic violation of Lorentz invariance in the propagation of energetic neutrinos, v/c=[1 +- (E/M_\nuQG1)] or [1 +- (E/M_\nu QG2}^2], using data from supernova explosions and the OPERA long-baseline neutrino experiment.