Sneutrino Dark Matter in Low-scale Seesaw Scenarios

Understand

We consider supersymmetric models in which sneutrinos are viable dark matter candidates.

• These are either simple extensions of the Minimal Supersymmetric Standard Model with additional singlet superfields, such as the inverse or linear seesaw, or a model with an additional U(1) group.
• All of these models can accomodate the observed small neutrino masses and large mixings.
• We investigate the properties of sneutrinos as dark matter candidates in these scenarios.