Antinuclei cosmic-rays as a probe for dark matter.*

Cosmic ray antinuclei offer an exciting new avenue to probe the nature of dark matter. We focus

on the low energy antideuteron spectrum and leverage the Monash tune in Pythia 8.3 to simulate

cosmic-ray proton collisions in the interstellar medium. Employing an event afterburner on the

antinucleon four-momentum data allows us to elucidate clusters of antiprotons and antineutrons,

that can coalesce into antinuclei species such as antideuterons, antitritium, and anti-Helium-3.

With this approach we can isolate dark matter signatures in antinuclei cosmic-ray fluxes

untainted by astrophysical backgrounds. Such fluxes can be observed my AMS-02 and upcoming

experiments. Our analysis allows to evaluate more precisely the expected cosmic-ray energy

spectra, a task crucial for advancing our understanding of cosmic-ray physics and the properties

of dark matter.