Prospects to verify a possible dark matter hint in cosmic antiprotons with antideuterons and antihelium

Understand

Cosmic rays are an important tool to study dark matter annihilation in our Galaxy.

• Recently, a possible hint for dark matter annihilation was found in the antiproton spectrum measured by AMS-02, even though the result might be affected by theoretical uncertainties.
• A complementary way to test its dark matter interpretation would be the observation of low-energy antinuclei in cosmic rays.
• We determine the chances to observe antideuterons with GAPS and AMS-02, and the implications for the ongoing AMS-02 antihelium searches.