Oscillations of Majorana neutrinos in supernova and CP violation

TL;DR

This paper explores how Majorana neutrinos oscillate in supernova environments, revealing new resonances influenced by CP violation and magnetic fields, which could inform future neutrino experiments.

Contribution

It extends previous work by analyzing energy dependence of Majorana neutrino oscillation resonances in supernovae, highlighting their potential to probe neutrino nature and CP violation.

Findings

Identification of new oscillation resonances in supernova conditions

Energy dependence of resonance amplitudes analyzed

Implications for future neutrino experiments like JUNO, Hyper-Kamiokande, DUNE

Abstract

Leptonic CP violation is one of the most important topics in neutrino physics. CP violation in the neutrino sector is strongly related to the nature of neutrinos: whether they are Dirac or Majorana particles. In \cite{Popov:2021icg} we have shown that for Majorana neutrinos arance of nonzero Majorana CP-violating phases combined with strong magnetic field during supernova core-collaple can induce new resonances in neutrino oscillations, for example in $\nu_e \to \bar{\nu}_\tau$ channel. In this contribution we further study new resonances in Majorana neutrino oscillations, in particular energy dependence of amplitudes of these resonances. Our findings suggest a potential astrophysical setup for studying the nature of neutrino masses and leptonic CP violation and may be important for future neutrino experiments, such as JUNO, Hyper-Kamiokande and DUNE.