Multicomponent dark matter in the light of CALET and DAMPE

oleh: Chao-Qiang Geng, Da Huang, Lu Yin

Format: Article
Diterbitkan: Elsevier 2020-10-01

Deskripsi

In the light of the latest measurements on the total e++e− flux by CALET and DAMPE experiments, we revisit the multicomponent leptonically decaying dark matter (DM) explanations to the cosmic-ray electron/positron excesses observed previously. Especially, we use the single and double-component DM models to explore the compatibility of the AMS-02 positron fraction with the new CALET or DAMPE data. As a result, for either the AMS-02 + CALET dataset or the AMS-02 + DAMPE one, both the single and double-component DM models can provide reasonable fits. If we further take into the diffuse γ-ray constraints from Fermi-LAT, only the double-component DM models are allowed.