Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-04-11
JHEP 0306 (2003) 030
Physics
High Energy Physics
High Energy Physics - Phenomenology
Final version to appear in JHEP
Scientific paper
10.1088/1126-6708/2003/06/030
We compute the neutralino-nucleon cross section in several supersymmetric scenarios, taking into account all kind of constraints. In particular, the constraints that the absence of dangerous charge and colour breaking minima imposes on the parameter space are studied in detail. In addition, the most recent experimental constraints, such as the lower bound on the Higgs mass, the $b\to s\gamma$ branching ratio, and the muon $g-2$ are considered. The astrophysical bounds on the dark matter density are also imposed on the theoretical computation of the relic neutralino density, assuming thermal production. This computation is relevant for the theoretical analysis of the direct detection of dark matter in current experiments. We consider first the supergravity scenario with universal soft terms and GUT scale. In this scenario the charge and colour breaking constraints turn out to be quite important, and $\tan\beta\lsim 20$ is forbidden. Larger values of $\tan\beta$ can also be forbidden, depending on the value of the trilinear parameter $A$. Finally, we study supergravity scenarios with an intermediate scale, and also with non-universal scalar and gaugino masses where the cross section can be very large.
Cerdeno David G.
Gabrielli Emidio
Gomez Mario E.
Munoz Carlos
No associations
LandOfFree
Neutralino-Nucleon Cross Section and Charge and Colour Breaking Constraints does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Neutralino-Nucleon Cross Section and Charge and Colour Breaking Constraints, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutralino-Nucleon Cross Section and Charge and Colour Breaking Constraints will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-411299