Impact of the Neutrino Magnetic Moment on the Neutrino Fluxes and the Electron Fraction in core-collapse Supernovae

TL;DR

This paper investigates how a neutrino magnetic moment influences neutrino interactions and electron fractions in core-collapse supernovae, finding significant effects only with very large magnetic moments for both Dirac and Majorana neutrinos.

Contribution

It is the first study to analyze the impact of neutrino magnetic moments on supernova neutrino fluxes and electron fractions for both Dirac and Majorana neutrinos.

Findings

Large magnetic moments are required for noticeable effects.

Neutrino fluxes are significantly altered with large magnetic moments.

Electron fraction in supernovae can be affected by neutrino magnetic properties.

Abstract

We explore the effect of the neutrino magnetic moment on neutrino scattering with matter in a core-collapse Supernova. We study the impact both on the neutrino fluxes and on the electron fraction. We find that sizeable modifications require very large magnetic moments both for Dirac and Majorana neutrinos.