micrOMEGAs for dark matter studies

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Published August 26, 2024 | Version v7
Software Open

micrOMEGAs 6

Creators

  • 1. Laboratoire de Physique Subatomique et de Cosmologie
  • 2. ROR icon Laboratoire d'Annecy-le-Vieux de Physique Théorique
  • 3. IPPP, Physics Department, Durham University
  • 4. ROR icon Laboratoire de Physique Corpusculaire
  • 5. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State Universit

Description

micrOMEGAs is a numerical code to compute dark matter (DM) observables in generic extensions of the Standard Model of particle physics. This new version, micrOMEGAs 6.0, includes a generalization of the Boltzmann equations governing the DM cosmic abundance evolution which can be solved to compute the relic density of N-component DM. The direct and indirect detection rates in such scenarios take into account the relative contribution of each component such that constraints on the combined signal of all DM components can be imposed. The co-scattering mechanism for DM production is also included, whereas the routines used to compute the relic density of feebly interacting particles have been improved in order to take into account the effect of thermal masses of t-channel particles. Finally, the tables for the DM self-annihilation-induced photon spectra have been extended down to DM masses of 110 MeV, and they now include annihilation channels into light mesons.
 
The compressed file micromegas_6.0.tgz is about 22 MB, the unpacked program is about 100 MB. 
Download and unpack the tarball, then go to the micromegas_6.0 folder, e.g.:
 
tar -zxvf micromegas_6.0.tgz
cd micromegas_6.0
 
Detailed installation instructions are given in the README file in the top-level directory. 
An extensive manual is provided in the man directory.  
 
For more information, see the micrOMEGAs webpage.

Series information

v.6.1.15

  - The C-code is improved to avoid warnings of C-compiler.
  - Improved link to LHAPDF.
  - Default set of parton distributions  is  cteq66.
  - A memory leak  in calls to vSigmaA and vSigmaS  is fixed. 
  - QCD uncertainties  of hadronization spectra for indirect detection are included:  arXiv: 2202.11546.
  -  1->4 decays are not computed if there are open 1->3 channels which all give zero contribution to the particle width.
  - New  positron  spectra from production of pions and kaons in light DM scenarios are implemented.
  -   A C-version of suspect for the MSSM is compiled if there is no Fortran compiler
  - New interface to SModelS_3.0.0, the combination of signal regions or analyses can be specified in main.c

 v.6.0.5

  • Remove another compilation problem on MAC,  thanks to Maria Gonçalves.
  • Update manual

v.6.0.4

- A compiler flag for clang is added to avoid compilation problems on MAC

v.6.0.3 : 

- In the calculation of the cross-section for DM DM-> W,W*, the lower limit on the center-of-mass momentum  is now set to Pcm = 1e-4*(2Mcdm) to avoid losing  precision at Pcm=0 when the s-wave contribution vanishes.

v.6.0.2 : 

- Update manual

v6.0.1 : 

  • Fixed a bug that slowed down the computation.

v6.0.0: Published January 5, 2024

Files

Files (32.6 MB)

Name Size Download all
md5:fa4a470d1a9f16d160e0981ab0a890ad
32.6 MB Download

Additional details

Related works

Is described by
Preprint: arXiv:2312.14894 (arXiv)

Funding

UK Research and Innovation
DARK MAtter for Precision experiments (DARKMAP) MR/T042575/1

Dates

Submitted
2024-01-05

Software

Development Status
Active