| DATE: |
2008-11-25 11:00 - 12:00 |
| PLACE: |
Kenkyu Honkan 2F RM 220 |
| TITLE: |
Right-handed Sneutrino as Thermal Dark Matter |
| CONTACT: |
tsuda |
| SPEAKER: |
Dr. Osamu Seto (University of Minnesota) |
| LANGUAGE: |
English |
| ABSTRACT: |
We study an extention of the MSSM with a singlet S with coupling S H1 H2 in order to solve the mu problem as in the NMSSM, and right-handed neutrino N with coupling SNN in order to generate dynamically elecro-weak scale Majorana neutrino 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.
Reference: D. G. Cerdeno, C. Munoz and O. Seto, ``Right-handed sneutrino as thermal dark matter,'' arXiv:0807.3029 [hep-ph].
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