micrOMEGAs4.1: two dark matter candidates

TL;DR

micrOMEGAs4.1 introduces a generalized framework for calculating dark matter relic densities and detection signals considering two interacting dark matter candidates within extended standard model scenarios.

Contribution

It extends the micrOMEGAs code to handle two dark matter candidates, including their interactions and semi-annihilation effects, enhancing dark matter phenomenology analysis.

Findings

Relic density calculations now include interactions between two DM sectors.

The code computes both direct and indirect detection signals for two DM candidates.

An example with two scalar doublets and a singlet demonstrates the extension.

Abstract

micrOMEGAs is a code to compute dark matter observables in generic extensions of the standard model. This version of micrOMEGAs includes a generalization of the Boltzmann equations to take into account the possibility of two dark matter candidates. The modification of the relic density calculation to include interactions between the two DM sectors as well as semi-annihilation is presented. Both DM signals in direct and indirect detection are computed as well. An extension of the standard model with two scalar doublets and a singlet is used as an example.