Right-handed sneutrino dark matter with U(1)_{B-L} gauge symmetry

by Jong-Chul Park (KIAS)

Friday 28 Jan 2011, 11:00 → 12:00 Europe/Paris

In supersymmetric models extended with right-handed neutrinos, right-handed sneutrino can be a viable dark matter candidate. We can evade the overproduction problem of sneutrino dark matter in the MSSM with U(1)_{B-L} gauge symmetry. We examine the parameter space where the required thermal relic density is obtained. In this model, sneutrino can satisfy the current thermal dark matter relic density limit through different processes compared with odinary thermal dark matter candidates. We also discuss collider phenomenology including the production of Z_{B-L} and \tilde{Z_{B-L}} at the LHC.