Micromegas
v_2.1 for a generic model for the calculation of e Relic density Direct detection rates Indirect detection rates
Code to calculate the properties of a stable massive particle in
a generic model. First developed to compute the relic density of
a stable massive particle, the code
also computes the rates for direct and indirect detection rates
of dark matter. It is assumed that a discrete symmetry like R-parity
ensures the stability of the lightest odd particle. All
annihilation and coannihilation channels are included in the
computation of the relic density. Specific examples of this general
approach include the MSSM and various extensions. Extensions to other
models can be implemented by the user. The New Physics model first
requires to write a new CalcHEP model file, a package for the automatic generation of squared matrix elements. This can be done through LanHEP. Once this is done, all annihilation and coannihilation channels are included automatically in any model.
The cross-sections for both spin dependent and spin independent
interactions of WIMPS on protons are computed automatically as well as
the rates for WIMP scattering on nuclei in a large detector.
Annihilation cross-sections of the drak matter candidate at zero
velocity, relevant for indirect detection of dark matter, are also
computed automatically.
The package includes the minimal supersymmetric standard model (MSSM),
the NMSSM, the MSSM with complex phases (CPVMSSM), the little Higgs
model (LHM) and a model with right-handed neutrino DM (RHNM).
1. The MSSM model is as described in micromegas_1.3
The package also includes routines for g-2, b to s gamma, b_s to mu mu, experimental direct LEP constraints,..
2. The NMSSM model now uses the Susy Les Houches
Accord 2 , for a description and physics studies see this
paper.
The NMSSM file uses NMHDECAY and includes LEP constraints.
3. The CPV model uses CPsuperH. A routine for the electron and thallium edm (at two-loop) is included. For a description and physics studies see this paper.
4.
The RHN model is a generic model with a Dirac right-handed neutrino
inspired by extra-dimensional models that contains also extra gauge
bosons and fermions. For a description and physics studies see this paper.
5. For a physics study using the little Higgs model see this paper.
6. Implementation of new models first requires to write a new CalcHEP
model file.
For more information see the README files and also If you are using micromegas 2.1, please cite G. Bélanger, F. Boudjema, A. Pukhov, A. Semenov, arXiv:0803.2360 [hep-ph] and G. Bélanger, F. Boudjema, A. Pukhov, A. Semenov, Comput.Phys.Commun.176:367-382,2007 hep-ph/0607059
Moreover if you are using the MSSM module, please also cite G. Bélanger, F. Boudjema, A. Pukhov
and A. Semenov, Comput. Phys. Commun. 174 (2006)
577; hep-ph/0405253. and G. Bélanger, F. Boudjema, A. Pukhov
and A. Semenov, Comput. Phys. Commun. 149 (2002)
103; hep-ph/0112278.
If you are using the CPVMSSM please also cite G. Bélanger, F. Boudjema, S. Kraml, A. Pukhov, A. Semenov, Phys. Rev. D73:115007 (2006); hep-ph/0604150
If you are using the NMSSM please also cite G. Bélanger, F. Boudjema, C. hugonie, A. Pukhov, A. Semenov, JCAP0509:001(2005); hep-ph/0505142
If you are using the RHNM please also cite G. Belanger, A.Pukhov, G.Servant, JCAP 0801:009 (2008); arXiv:0706.0526 [hep-ph].
If you are using the LHM please also cite A. Belyaev, C.R.Chen, K. Tobe, C.P. Yuan, Phys.Rev. D74:115020 (2006)