Stellar energy loss rates in the pair-annihilation process beyond the standard model

TL;DR

This paper calculates stellar energy loss rates from neutrino pair production in electron-positron annihilation within various beyond-standard-model frameworks, highlighting its potential impact on supernova physics.

Contribution

It extends previous work by evaluating energy loss rates in 331, left-right symmetric, and little Higgs models, providing model-independent estimates for supernova applications.

Findings

Energy loss rates are nearly independent of model parameters within allowed ranges.

The process can serve as an efficient energy loss mechanism in supernova cores.

Results complement existing studies on stellar energy loss in electron-positron annihilation.

Abstract

We calculate the stellar energy loss due to neutrino-pair production in $e^+e^-$ annihilation in the context of a 331 model, a left-right symmetric model and a simplest little Higgs 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 stellar energy loss is almost independent on the parameters of the models in the allowed range for these parameters. This work complements other studies on the stellar energy loss rate in $e^+e^-$ annihilation.