Thermal Right-Handed Sneutrino Dark Matter

Details Thermal Right-Handed Sneutrino Dark Matter Thermal Right-Handed Sneutrino Dark Matter

2008-09-23

arxiv.org/abs/0809.3932v1

AIP Conf.Proc.1078:572-574,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Submitted for the SUSY08 proceedings, 3 pages, LaTeX, 2 eps figures

Scientific paper

10.1063/1.3052031

We discuss the relic abundance of the right-handed sneutrinos in the supersymmetric F_D-term model of hybrid inflation. As well as providing a natural solution to the mu- and gravitino overabundance problems, the model offers the lightest right-handed sneutrino as a candidate for thermal dark matter. The F_D-term model predicts a new quartic coupling of purely right-handed sneutrinos to the Higgs doublets that thermalizes the sneutrinos and makes them annihilate sufficiently fast to a level compatible with the current cosmic microwave background data. We discuss this scenario and identify favourable regions of the parameter space within mSUGRA.

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