Supernova neutrino signals by liquid Argon detector and neutrino magnetic moment

TL;DR

This paper investigates how a large liquid Argon detector can observe supernova neutrino signals influenced by magnetic moments and flavor conversions, potentially constraining neutrino properties.

Contribution

It models supernova neutrino signals considering magnetic moments, flavor conversions, and matter effects, highlighting the detector's potential to constrain neutrino parameters.

Findings

Different neutrino signals depend on oscillation parameters and magnetic moments.

The detector can distinguish neutronization bursts and total neutrino event numbers.

Observations can constrain neutrino magnetic moments and oscillation parameters.

Abstract

We study electron-neutrino and electron-antineutrino signals from a supernova with strong magnetic field detected by a 100 kton liquid Ar detector. The change of neutrino flavors by resonant spin-flavor conversions, matter effects, and neutrino self-interactions are taken into account. Different neutrino signals, characterized by neutronization burst event and the total event numbers of electron-neutrinos and electron-antineutrinos, are expected with different neutrino oscillation parameters and neutrino magnetic moment. Observations of supernova neutrino signals by a 100 kton liquid Ar detector would constrain oscillation parameters as well as neutrino magnetic moment in either normal and inverted mass hierarchies.