is a code written in C for the
calculation of the relic density in supersymmetry.
It also calls some external FORTRAN functions. All annihilation
as well as co-annihilation processes are calculated exactly
a supersymmetric version of CompHEP.
Co-annihilation processes include any type of slepton, squark, possible
chargino or next to lightest neutralino as well as a gluino. By default
the lightest neutralino is assumed to be the LSP, but the user can set
any supersymmetric particle (not including Higgses!) to be the LSP, in
particular a sneutrino.
in all we have included about 2800 processes not counting charge
states. Care is taken to deal with resonances (in particular for the
resonances) and thresholds. The present version uses
FeynHiggs to calculate the Higgs masses and Hdecay
to include important QCD corrections to the width and partial widths of
the Higgses. All Yukawa effects are included. MicrOMEGAs can run
by providing an unconstrained set of soft SUSY parameters at the
scale. In the present version, a mSUGRA model can be entered
the Isajet interface
however any other RGE code can be used. Many constraints can be
apart from the present direct limits on the masses of the
particles, we provide routines for the muon g-2, b->s \gamma
Delta rho. We
also provide a sample file to be used for scans over a set of
as in mSUGRA. It is also possible to view the contributions of
channels to the relic density.
requirements: C compiler, Fortran compiler, 500 kb of disk space for
a minimum of 10Mb as working space. Tested
on: Dec Alpha, Silicon Graphics and Linux (Red Hat,Suse),
and HP-UX .
the program consists of about more 2800 processes (not counting charge
conjugate related processes, etc), only tree-level processes are
Missing are one-loop processes with 2\gamma and 2 gluons in the final
For the relic density these are negligible.
corrections to neutralino and chargino masses are not implemented in
routine for b->s\gamma which includes NLO effects and large tgb
will be included soon.