3 papers
hep-ph2026
Cosmic-Ray Signatures of Annihilating and Semi-Annihilating Dark Matter via One-Step Cascades
Francesco D'Eramo, Silvia Manconi, Tommaso Sassi
We present a framework in which three classes of dark matter number-changing processes can affect both the relic abundance via thermal freeze-out in the early universe and the gene…
hep-ph2026
Seasons of Dark Matter Freeze-In Shaped by the Weather of the Early Universe
Francesco D'Eramo, Alessandro Lenoci, Tommaso Sassi
Quantifying the imprints of freeze-in dark matter (DM) on cosmological structures requires knowledge of its phase-space distribution. We investigate how variations in the cosmologi…
hep-ph2025
Axion Portal to Scalar Dark Matter: Unveiling Stabilizing Symmetry Footprints
Francesco D'Eramo, Tommaso Sassi
We investigate the role of an axion-like particle (ALP) as a portal between the dark and visible sectors. Unlike conventional studies, which typically assume fermionic dark matter…