[HET seminar] Leptogenesis and Gravity Waves from a SUSY-breaking Phase Transition

by Jim Cline (McGill), Benoit Laurent (McGill), Jean-Samuel Roux (McGill)

Thursday 31 Aug 2023, 11:00 → 12:30 US/Eastern

https://bnl.zoomgov.com/j/1605999124?pwd=eCs3M0t2eGtiL0dyMGNoUDIzamxqQT09

Also in small seminar room.

Abstract: It has been shown that supersymmetry breaking in a hidden sector at the PeV scale can lead to a distinctive strong first order phase transition, producing gravity waves that could be observed in upcoming experiments. We develop this idea, proposing a concrete model with gauge-mediated SUSY breaking, that can also give successful leptogenesis at the phase transition.  A novel mechanism of neutrino mass generation at one loop arises in the model.  We show that significant production of primordial black holes can take place at the phase transition.

https://arxiv.org/abs/2211.00422

BNL2.pdf