Orateur
Debtosh Chowdhury
(CPHT, Ecole Polytechnique)
Description
Supergravity and string theories usually have particles, such as a modulus, with only gravitational interactions. These moduli fields arise due to the flat directions in the above theories. We inspect the possibility that these moduli fields acting as a mediator between the dark sector and the Standard Model, from an effective field theory perspective. We show that in this scenario, dark matter can be efficiently produced via freeze-in mechanism during the reheating epoch. We delineate the regions where this portal is efficient by varying the modulus mass relative to the temperatures attained during the reheating process.
Auteurs principaux
Debtosh Chowdhury
(CPHT, Ecole Polytechnique)
Emilian Dudas
(Ecole Polytechnique)
Maíra Dutra
(Laboratoire de Physique Théorique d'Orsay)
Yann Mambrini
(LPT Orsay)
