Estimating matter induced CPT violation in Long-Baseline Neutrino Experiments

TL;DR

This paper investigates how matter effects can induce CPT violation in long-baseline neutrino experiments, analyzing the dependence on oscillation parameters and estimating the asymmetry assuming CPT invariance in vacuum.

Contribution

It provides a detailed estimation of matter-induced CPT violation effects in neutrino oscillations using exact transition probability expressions.

Findings

CPT violating asymmetry depends on mixing angles and mass differences.

Asymmetry varies with the Dirac CP phase.

Exact expressions enable precise estimation of matter-induced CPT violation.

Abstract

We examine matter induced CPT violation effects in long baseline electron neutrino appearance experiments in a low energy neutrino factory setup. Assuming CPT invariance in vacuum, the magnitude of CPT violating asymmetry in matter has been estimated using the exact expressions for the transition probabilities. The dependence of the asymmetry on the oscillation parameters like mixing angles, mass squared differences as well as on the Dirac CP violating phase has been investigated.