Explaining LSND and MiniBooNE using altered neutrino dispersion relations

TL;DR

This paper explores how CPT and Lorentz symmetry violations could explain the MiniBooNE anomaly through neutrino-antineutrino oscillations with altered dispersion relations, highlighting potential resonance effects.

Contribution

It introduces a model with four CPT-violating parameters that enable resonant neutrino-antineutrino oscillations, providing a novel explanation for the MiniBooNE anomaly.

Findings

Resonant enhancements in neutrino-antineutrino oscillations are possible with CPT violation.

The model connects flavor, charge conjugation, and mass eigenstates in the context of CPT violation.

Parameter space analysis shows conditions for resonance phenomena.

Abstract

We investigate the possibility to explain the MiniBooNE anomaly by CPT and Lorentz symmetry violating neutrino-antineutrino oscillations in a two generation framework. We work with four non-zero CPT-violating parameters that allow for resonant enhancements in neutrino-antineutrino oscillation phenomena in vacuo which are suitably described in terms of charge conjugation eigenstates of the system. We study the relation between the flavor, charge conjugation and mass eigenbasis of neutrino-antineutrino oscillations and examine the interplay between the available CPT-violating parameter space and possible resonance structures.