micrOMEGAs3.1 : a program for calculating dark matter observables

TL;DR

micrOMEGAs3.1 is an advanced computational tool for calculating dark matter observables, incorporating new physics models, improved thermodynamics, and enhanced detection signatures, aiding research in dark matter phenomenology.

Contribution

This version introduces generalized Boltzmann equations, new annihilation channels, improved direct detection modeling, and modules for neutrino telescope signatures, expanding its applicability for dark matter studies.

Findings

Enhanced accuracy in relic density calculations.

Ability to analyze asymmetric dark matter and semi-annihilation.

Improved modeling of Higgs couplings and detection signatures.

Abstract

micrOMEGAs is a code to compute dark matter observables in generic extensions of the standard model. This new version of micrOMEGAs is a major update which includes a generalization of the Boltzmann equations to accommodate models with asymmetric dark matter or with semi-annihilation and a first approach to a generalization of the thermodynamics of the Universe in the relic density computation. Furthermore a switch to include virtual vector bosons in the final states in the annihilation cross sections or relic density computations is added. Effective operators to describe loop-induced couplings of Higgses to two-photons or two-gluons are introduced and reduced couplings of the Higgs are provided allowing for a direct comparison with recent LHC results. A module that computes the signature of DM captured in celestial bodies in neutrino telescopes is also provided. Moreover the direct detection module has been improved as concerns the implementation of the strange "content" of the nucleon. New extensions of the standard model are included in the distribution.