Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Sterile neutrino dark matter in the super-weak model

Jul 8, 2022, 9:00 AM
Room 11 (Magenta A)

Room 11 (Magenta A)

Parallel Talk Dark Matter Dark Matter


Károly Seller (ELTE Eötvös Loránd University)


The super-weak model is a particle physics model which extends the Standard Model (SM) by a new U(1) gauge symmetry. In addition to the new mediator $Z'$, a scalar particle $\chi$ is added to deal with the meta-stability of the SM vacuum, and right-handed neutrinos are introduced to account for the non-vanishing neutrino masses. In this talk, we investigate the cosmological implications of such an extension with our main focus being on dark matter production. We find that a light -- mass of $\mathcal{O}(10)$ MeV -- sterile neutrino can play the role of dark matter with a non-vanishing parameter space. We investigate present experimental bounds on the model parameters, both from particle physics experiments as well as from astrophysical observations.

In-person participation Yes

Primary authors

Károly Seller (ELTE Eötvös Loránd University) Zoltan Trocsanyi (ELTE Eotvos Lorand University)

Presentation materials