IFIC Seminar: Flavourful FIMP Dark Matter

by Venus Keus (Dublin Institute for Advanced studies)

Tuesday 27 Feb 2024, 12:00 → 13:00 Europe/Madrid

Primera-1-1-1 - Paterna. Seminario (IFIC)

Using the Froggatt-Nielsen mechanism, we consider a leptophilic flavon to produce the charged lepton Yukawa matrix. The real part of the flavon mixes with the Higgs boson and introduces lepton flavour violating interactions which are bounded by experiment. The imaginary part of the flavon, on the other hand, is a long-lived light particle. If such a particle is light enough, i.e. its decay to charged leptons is kinematically forbidden, its abundance could be comparable to that of Dark Matter. I will discuss the experimental and cosmological bounds constraining this framework and explore the viability of such Dark Matter candidate. 

This IFIC Seminar has received funding/support from the Conselleria de Educación, Universidades y Empleo Research Project "Understanding non-perturbative Phenomena in fundamental physics" (PROMETEO/2021/083).