Seminar by Andreas Goudelis

Monday, June 13, 2022
11 AM

Title: FIMPy baryogenesis

The nature of dark matter and the origin of the matter-antimatter asymmetry of the Universe constitute two major open questions in contemporary high-energy physics and cosmology. In this talk I will present a framework which aims at simultaneously addressing both of them in a relatively economical way, by relying on the so-called "freeze-in" mechanism. In particular, I will discuss how the out-of-equilibrium decays or scatterings of heavy bath particles can produce (feebly interacting) dark matter along with, eventually, a baryon asymmetry in the visible sector. I will further show that, depending on the nature of the underlying interactions, both dark matter production and baryogenesis can take place at drastically different temperatures during the cosmological evolution.

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