CP-Violation and Non-Standard Interactions at the MOMENT

TL;DR

This paper investigates how the MOMENT neutrino experiment can resolve degeneracies caused by non-standard interactions, aiding in precise measurement of the CP-violating phase in neutrino oscillations.

Contribution

It demonstrates that MOMENT's short baseline and energy range can help break degeneracies induced by NSI, improving the measurement of the CP-violating phase.

Findings

MOMENT can resolve degeneracies caused by NSI.

MOMENT improves the precision of $ heta_{13}$ and $ heta_{23}$ measurements.

The experiment enhances the determination of the CP-violating phase $oldsymbol{ heta}$.

Abstract

To measure the last unknown $3\nu$ oscillation parameter ($\delta$), several long baseline neutrino experiments have been designed or proposed. Recently it has been shown that turning on neutral current Non-Standard Interactions (NSI) of neutrinos with matter can induce degeneracies that may even hinder the proposed state-of-the-art DUNE long baseline experiment from measuring the value of $\delta$. We study how the result of the proposed MOMENT experiment with a baseline of 150 km and $200~{\rm MeV}<E_\nu<600~{\rm MeV}$ can help to solve the degeneracy induced by NSI and determine the true value of $\delta$.