Neutrino oscillations beyond the Standard Model

TL;DR

This paper explores how potential New Physics beyond the Standard Model could alter neutrino oscillation experiments, affecting production, propagation, and detection, with implications for future experimental observations.

Contribution

It investigates the possible impacts of New Physics on neutrino oscillations, including non-factorizable cross sections and non-standard propagation effects.

Findings

Current limits still permit observable New Physics effects

Neutrino flux and propagation may differ from Standard Model predictions

Implications for future neutrino experiments

Abstract

We address the possible impact of New Physics on neutrino oscillation experiments. This can modify the neutrino production, propagation and/or detection, making the full cross section non-factorizable in general. Thus, for example, the neutrino flux may not be properly described assuming an unitary MNS matrix and/or neutrinos may propagate differently depending of their Dirac or Majorana character. Interestingly enough, present limits on New Physics still allow for observable effects at future neutrino experiments.