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Manuscript Title: micrOMEGAs: Version 1.3
Authors: G. Bélanger, F. Boudjema, A. Pukhov
Program title: micrOMEGAs1.3
Catalogue identifier: ADQR_v1_3 Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 174(2006)577
Programming language: C and Fortran.
Computer: PC, Alpha, Silicon graphics, Sun.
Operating system: UNIX( Linux, OSF1, IRIX64, SunOS).
RAM: ~20MB depending on the number of processes required.
Keywords: Cold Dark Matter, Minimal Supersymmetric Standard Model.
PACS: 95.35.+d, 14.80.Ly, 12.60.Jv.
Classification: 1.9, 11.6.
Does the new version supersede the previous version?: Yes
Nature of problem: Calculation of the relic density of the lightest supersymmetric particle in the MSSM.
Solution method: In numerically solving the evolution equation for the density of darkmatter, relativistic formulae for the thermal average are used. All tree-level processes for annihilation and coannihilation of SUSY particles are included. The cross-sections for all processes are calculated exactly with CalcHEP. Higher-order corrections to Higgs masses and Higgs couplings to quark pairs including QCD as well as some SUSY corrections are implemented. The input parameters can be either the soft SUSY parameters in a general MSSM or the parameters of a SUGRA model specified at the GUT scale. In the latter case, a link with Suspect, SOFTSUSY, Spheno and Isajet allows to calculate the supersymmetric spectrum, Higgs masses, as well as mixing matrices.
Reasons for new version: This new version contains a more accurate calculation of the relic density of dark matter as well as many new features both for interface with codes that calculate the supersymmetric spectrum as well as for computation of cross-sections and decays relevant for collider physics.
Summary of revisions: Interface with the main codes to calculate the supersymmetric spectrum: Suspect, Isajet, Spheno and SOFTSUSY in models defined at some high scale. Includes loop corrected sparticle masses and mixing matrices. Includes loop-corrected Higgs masses and widths. QCD corrections to the Higgs couplings to fermion pairs are included as well as, via an effective Lagrangian, the Δm_b correction relevant at large tanβ. Provides exact numerical solution of the Boltzmann equation by Runge-Kutta. Outputs the relative contribution of each channel to 1/Ω Computes cross-sections for any 2 → 2 process at the parton level. Calculates decay widths for all particles at tree-level including all 1 → 2 decay modes. Calculates constraints on MSSM: B_s → μ⁺μ^- and NLO corrections to b →sγ.
Unusual features: Depending on the parameters of the model, the program generates additional new code for matric elements, compiles it and loads it dynamically.
Running time: 0.2 sec