Pursuit for optimal baseline for matter nonstandard interactions in long baseline neutrino oscillation experiments

TL;DR

This paper explores how well long baseline neutrino experiments can detect matter nonstandard interactions, focusing on interference effects with the CP phase and identifying optimal experimental configurations.

Contribution

It analyzes the interference between CP phase and nonstandard interactions, providing insights into the best experimental setups for probing mNSI.

Findings

Interference is strong for $ u_e o u_$ and $ u_e o u_$ transitions.

SPS and DUNE setups are used as benchmarks.

Optimal baseline configurations are identified for probing mNSI.

Abstract

We investigate the prospects for probing the strength of the possible matter nonstandard neutrino interactions (mNSI) in long baseline neutrino oscillation experiments and the interference of the leptonic CP angle $\delta_{CP}$ with the constraining of the mNSI couplings. The interference is found to be strong in the case of the $\nu_e \leftrightarrow \nu_\mu$ and $\nu_e \leftrightarrow \nu_\tau$ transitions but not significant in the other cases. We use SPS and DUNE setups as benchmarks.