Emissivity of neutrinos in supernova in a left-right symmetric model

TL;DR

This paper calculates neutrino emissivity from electron-positron annihilation in a left-right symmetric model, showing it can significantly contribute to energy loss in supernova cores, with emissivity depending on the model's mixing angle.

Contribution

It provides a new calculation of neutrino emissivity within a left-right symmetric model applicable to supernova physics, highlighting the impact of model parameters.

Findings

Emissivity depends on the mixing angle φ within the allowed range.

Neutrino-pair production can be an efficient energy-loss mechanism in supernova cores.

The process's significance varies with model parameters.

Abstract

We calculate the emissivity due to neutrino-pair production in $e^+e^-$ annihilation in the context of a left-right symmetric model in a way that can be used in supernova calculations. We also present some simple estimates which show that such process can act as an efficient energy-loss mechanism in the shocked supernova core. We find that the emissivity is dependent of the mixing angle $\phi$ of the model in the allowed range for this parameter.