PeV-scale leptogenesis, gravitational waves, and black holes from a SUSY-breaking phase transition

Le résumé fourni par la source

Supersymmetry (SUSY) is a highly motivated theoretical framework, whose scale of breaking may be at petaelectronvolt (PeV) energies, to be consistent with null searches at the Large Hadron Collider. SUSY breaking through a first-order phase transition may have occurred in the early universe, leading to potential gravitational wave signals. Constructing a realistic model for gauge-mediated supersymmetry breaking, we show that such a transition can also induce masses for heavy right-handed neutrinos and sneutrinos, whose $CP$-violating decays give leptogenesis at the PeV scale, and a novel mechanism of neutrino mass generation at one loop. For the same models we predict the possible gravitational wave signals, and we study the possibility of production of primordial black holes during the phase transition.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.