Antiprotons in cosmic rays (CRs) serve as valuable probes for potential signatures of new
physics—such as dark matter annihilation—beyond the expected astrophysical background arising
from interactions of primary CRs with the interstellar medium. The interpretation of antiproton
measurements, however, is limited by uncertainties in secondary production models, particularly
in the antiproton production cross sections, which currently amount to approximately 10–15%.
In this work, we introduce a novel analytic model for antiproton production cross sections, con-
structed on the basis of the most recent accelerator data. We also present preliminary predictions
of the antiproton spectrum obtained with the GALPROP-HelMod cosmic ray propagation frame-
work, incorporating the updated secondary production cross sections.