Thermal Right-Handed Sneutrino Dark Matter
High Energy Physics - Phenomenology
2009-02-02 v1
Abstract
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.
Cite
@article{arxiv.0809.3932,
title = {Thermal Right-Handed Sneutrino Dark Matter},
author = {Frank Deppisch and Apostolos Pilaftsis},
journal= {arXiv preprint arXiv:0809.3932},
year = {2009}
}
Comments
Submitted for the SUSY08 proceedings, 3 pages, LaTeX, 2 eps figures