Antideuteroni cosmici da buchi neri primordiali

In this work, we have predicted and analyzed the cosmic antideuteron fluxes produced in the Galaxy by two exotic sources of cosmic rays: the evaporation of primordial black holes and the annihilation of dark matter particles. To make such predictions, we employed the USINE code, which allows users to semi-analytically solve the equation describing the propagation of charged cosmic rays in the Galaxy. While using this program, we found and fixed a bug that affected the reliability of the predictions. In addition, we upgraded the code by adding the possibility of making predictions of antinucleus fluxes originating from primordial black hole evaporation, for both monochromatic and extended distributions of black hole masses. We compared our predictions with the data of the AMS-02 experiment and with the projected sensitivity of the GAPS experiment, which will be launched in the austral summer of 2024. Our results show that antideuteron fluxes produced by primordial black holes are unlikely to reach the sensitivity level of GAPS. Instead, for dark matter, only fluxes originating from particles with masses comparable to 10 GeV could reach this threshold.