Right-handed sneutrino as thermal dark matter

Abstract

We study an extension of the MSSM with a singlet S with coupling SH1H2 in order to solve the mu problem as in the NMSSM, and right-handed neutrinos N with couplings SNN in order to generate dynamically electroweak-scale Majorana masses. We show how in this model a purely right-handed sneutrino can be a viable candidate for cold dark matter in the Universe. Through the direct coupling to the singlet, the sneutrino can not only be thermal relic dark matter but also have a large enough scattering cross section with nuclei to detect it directly in near future, in contrast with most of other right-handed sneutrino dark matter models.

5 pages, 2 figures. References added and minor changes. Final version to appear in Phys. Rev. D

References in corpus (6)

• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
• Interpreting the recent results on direct search for dark matter particles in terms of relic neutralino
• Minimal supergravity sneutrino dark matter and inverse seesaw neutrino masses
• Right-Handed Sneutrino as Cold Dark Matter of the Universe
• Revival of the Thermal Sneutrino Dark Matter

Cited by in corpus (5)

• A Model of TeV Scale Physics for Neutrino Mass, Dark Matter and Baryon Asymmetry and its Phenomenology
• Analysis of the parameter space and spectrum of the $\mu \nu$SSM
• Right-handed sneutrino dark matter in the NMSSM
• NMSSM and Seesaw Physics at LHC
• Neutrinos as cosmic messengers