Estudio de la radiopureza del argón subterráneo para DarkSide-20k e I+D+i en detectores basados en gases nobles para investigaciones de eventos raros

Résumé

There are strong pieces of evidence suggesting that ordinary matter, composed by baryons and leptons, is only the 5 % of the energy-matter content of the Universe. It is necessary to include two new components to account for all the energy-matter density in the Universe and thus explain astrophysical observations on a cosmological scale. The first one is a new, collision-less and non-luminous type of matter, called dark matter (DM), whose interactions with ordinary matter are mainly through the gravitational force. The second one is a uniformly distributed component called dark energy, which is thought to be responsible for the accelerated expansion of the Universe. According to the latest PLANCK satellite data, the dark energy accounts for 69 % of the content of our Universe and the dark matter for the 27 % [1]. The nature of dark matter and dark energy is one of the most relevant problems incurrent physics