Neutrino production states and NSI

TL;DR

This paper examines how non-standard interactions affect neutrino production states, revealing that quantum states are often mixed due to entanglement, challenging standard assumptions in neutrino oscillation models.

Contribution

It provides a detailed analysis of neutrino production states under non-standard interactions, highlighting the limitations of standard approximations and the role of entanglement.

Findings

Quantum neutrino states are often mixed due to entanglement.

Standard procedures are only approximately valid in models with left-handed neutrinos.

Entanglement between masses, flavor, and spins affects neutrino state purity.

Abstract

The problems of neutrino production states, prepared to the oscillation process, in the case of non standard interactions, are briefly discussed. Quantum neutrino states are determined from the dynamics of a production process. We show, that even in models where only left-handed neutrinos are introduced, the standard adopted procedure is valid only approximately. Entanglement between neutrino masses or between masses, flavour and spins cause, that their quantum states are mixed.