Asymmetric Dark Matter Abundance Including Non-thermal production

TL;DR

This paper studies how non-thermal production from heavy particle decay affects the relic abundance of asymmetric Dark Matter, providing new constraints based on Planck data.

Contribution

It introduces a model incorporating non-thermal production of asymmetric Dark Matter from heavy particle decay and analyzes its impact on relic density.

Findings

Increased Dark Matter abundance due to heavy particle decay

Constraints on asymmetry factor from Planck data

Impact of decay processes on relic density

Abstract

We investigate the relic abundance of asymmetric Dark Matter where the asymmetric Dark Matter is non--thermally produced from the decay of heavier particles in addition to the usual thermal production. We discuss the relic density of asymmetric Dark Matter including the decay of heavy particles in low temperature scenario. Here we still assume the universe is radiation dominated and there is asymmetry before the decay of heavy particles. We obtained increased abundances of asymmetric Dark Matter when there is additional contribution from the decay of heavier particles. Finally we find the constraints on the asymmetry factor and annihilation cross section using the Planck data.