Neutrinos pesados de Majorana y el origen de la materia oscura en el paradigma de Freeze-in.

Abstract

In the present work, a model for the production of scalar dark matter from heavy Majorana neutrinos by means of the freeze-in mechanism is exposed. These neutrinos are part of the minimally extended standard model, whose main difference from the standard model is that it includes straight neutrinos. The coupling between the dark matter particles and these neutrinos is of the Yukawa type. The main tool for the production of dark matter is the Boltzmann equation, through which the number of particles is found as a function of the quotient between the mass of Majorana’s heavy neutrinos and the temperature of the universe. In particular, bounds were found for the mass of dark matter and its coupling with the right neutrinos. In addition, the feasibility of the model for the production of dark matter from heavy neutrinos was shown.