Revisiting neutrino and sneutrino dark matter in natural SUSY scenarios
| Main Authors: | Joel Jones-Pérez, Thomas Faber, Werner Porod, Yang Liu |
|---|---|
| Format: | Proceeding poster |
| Terbitan: |
, 2020
|
| Online Access: |
https://zenodo.org/record/4124143 |
Daftar Isi:
- We study natural supersymmetric scenarios with light right-handed neutrino superfields, and consider the possibility of having either a neutrino or a sneutrino as a dark matter candidate. For the former, we evaluate the possibility of having SUSY corrections on the $\nu_4\to\nu_\ell\gamma$ decay rate, such that the NuStar bounds are relaxed. We find that corrections are too small. For sneutrino dark matter, we consider thermal and nonthermal production, taking into account freeze-out, freeze-in, and super-WIMP mechanisms. For the nonthermal case, we find that the $\tilde \nu_R$ can reproduce the observed relic density by adjusting the R-sneutrino mass and Yukawa couplings. For the thermal case, we find the need to extend the model in order to enhance sneutrino annihilations, which we exemplify in a model with an extended gauge symmetry.