Speaker
Dr
Nils-Erik Bomark
(NCBJ, Warsaw)
Description
In supersymmetric models with R-parity violation, the gravitino is a natural dark matter candidate. The gravitino can also naturally be very light, opening for the possibility of being warm dark matter as well as explaining the recently claimed 3.5 keV X-ray line from the XMM-Newton telescope.
We show that loops induced by trilinear lepton number violating couplings can indeed give a good explanation for this X-ray signature, while still remain compatible with early universe cosmology as well as constraints on R-parity violating couplings.
Furthermore, the above scenario indicates a rich LHC phenomenology, with multi-jet and/or multi-lepton final states from neutralinos or gluinos decaying through aforementioned lepton number violating couplings.
Authors
Leszek Roszkowski
Dr
Nils-Erik Bomark
(NCBJ, Warsaw)
