Speaker
Description
In this talk, we present our study of the cosmic antiproton and antideuteron fluxes produced by the evaporation of galactic primordial black holes (PBHs) with lognormal initial mass distributions. The antimatter production spectra were obtained using our modified version of the BlackHawk code, which incorporates the new CosmiXs hadronization spectra and a state‐of‐the‐art Wigner function coalescence model for antideuteron formation. The propagation of these fluxes throughout the Galaxy is computed with the USINE code, employing the latest cosmic-ray propagation frameworks. Using a realistic treatment of theoretical uncertainties and experimental errors, we compared our predicted antiproton fluxes with AMS‑02 measurements and background predictions, deriving competitive constraints on the abundance of PBHs up to critical masses of the order of 10²⁰ grams. Finally, we compared the predicted antideuteron fluxes with the expected sensitivity of the GAPS experiment, to probe its potential to detect antideuterons of PBH origin.
