Implications of lepton flavour violation on long baseline neutrino oscillation experiments

TL;DR

This paper investigates how lepton flavour violating non-standard neutrino interactions influence the ability of long-baseline experiments like T2K, NOvA, and DUNE to determine neutrino oscillation parameters and explores the allowed parameter space.

Contribution

It analyzes the impact of LFV NSIs on neutrino oscillation measurements and the potential to constrain these interactions in current and future experiments.

Findings

LFV NSIs can significantly affect parameter determination

Allowed parameter space is constrained by experimental data

Implications for neutrino mass hierarchy and CP violation measurements

Abstract

Non-standard neutrino interactions (NSIs), the sub-leading effects in the flavour transitions of neutrinos, play a crucial role in the determination of the various unknowns in neutrino oscillations, such as neutrino mass hierarchy, Dirac CP violating phase and the octant of atmospheric mixing angle. In this work, we focus on the possible implications of lepton flavour violating (LFV) NSIs, which generally affect the neutrino propagation, on the determination of the these unknown oscillation parameters. We study the effect of these NSIs on the physics potential of the currently running and upcoming long-baseline experiments, i.e., T2K, NO$\nu$A and DUNE. We also check the allowed oscillation parameter space in presence of LFV NSIs.