Micromegas
v_2.0 for a generic model (release 2.0.7)
Code to calculate the relic density of a stable massive particle in a
generic model. 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. Specific examples of this
general approach include the MSSM, NMSSM and the CP violating version of the MSSM. 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. Once
this is done, all annihilation and coannihilation channels are included
automatically in any model. Cross-sections at $v=0$, relevant for
indirect detection of dark matter, are also computed automatically. The
package includes the minimal supersymmetric standard model
(MSSM). The sample model files for the the MSSM with complex
phases and the NMSSM can be downloaded separately.
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. Implementation of new models first requires to write a new CalcHEP
model file.
5. If you are using this program please refer to the standard
micromegas manual and the 2.0 update document.
For more information see the README files and also
If you are using micromegas 2.0, please cite 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