Thermal right-handed sneutrino dark matter in the F D-term model of hybrid inflation

Frank Deppisch, Apostolos Pilaftsis

    Research output: Contribution to journalArticlepeer-review


    We compute 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 μ- and gravitino overabundance problems, the F D-term model offers a new viable candidate to account for the cold dark matter in the Universe: the lightest right-handed sneutrino. In particular, 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 analyze this scenario in detail and identify favourable regions of the parameter space within the framework of minimal supergravity, for which the lightest right-handed sneutrino becomes the thermal dark matter, in agreement with WMAP observations of cosmological inflation. Constraints derived from direct dark matter searches experiments are presented. © 2008 SISSA.
    Original languageEnglish
    Article number080
    JournalThe Journal of High Energy Physics
    Issue number10
    Publication statusPublished - 1 Oct 2008


    • Cosmology of Theories beyond the SM
    • Supersymmetric effective theories


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