Résumé / Abstract Seminaire_GReCO
SÉMINAIRE DU GRECO

"Cosmological imprint and phenomenology of very heavy dark-matter particles"

Lucien Heurtier
Dept. Physics, Univ. Durham (Durham, Royaume-Uni)

The dark sector of our universe might very well be constituted of particles with masses as large as the Exa-electronvolt (10^9 GeV). I will discuss in this talk how such a heavy dark-matter candidate might be populated in the early universe and how one could hope to detect it nowadays in astroparticle searches experiments. In particular, I will discuss the possible imprint of such models on the dynamics of cosmic inflation, but also how such a heavy candidate might be metastable and decay in the present universe, leading to detectable signals in the form of ultra-high energy cosmic rays.

lundi 8 mars 2021 - 11:00
Webinaire,
Institut d'Astrophysique de Paris

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