Lorentz- and CPT-violating models for neutrino oscillations

TL;DR

This paper introduces Lorentz- and CPT-violating models for neutrino oscillations that can explain existing anomalies and predict new signals, using fewer parameters than traditional models.

Contribution

It presents a simple, calculable class of models for neutrino oscillations incorporating Lorentz and CPT violation, capable of explaining multiple experimental anomalies.

Findings

A minimal model matches all established neutrino data.

The model naturally explains MiniBooNE low-energy anomalies.

Predictions include distinctive signals for future experiments.

Abstract

A class of calculable global models for neutrino oscillations based on Lorentz and CPT violation is presented. One simple example matches established neutrino data from accelerator, atmospheric, reactor, and solar experiments, using only two degrees of freedom instead of the usual five. A third degree of freedom appears in the model, and it naturally generates the MiniBooNE low-energy anomalies. More involved models in this class can also accommodate the LSND anomaly and neutrino-antineutrino differences of the MINOS type. The models predict some striking signals in various ongoing and future experiments.