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arXiv · 1905.10136

Multicomponent Dark Matter in the Light of CALET and DAMPE

Chao-Qiang Geng·Da Huang·Lu Yin
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Abstract

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. It turns out that neither single nor double-component DM models are able to fit the AMS-02 positron fraction and DAMPE total $e^+ + e^-$ flux data simultaneously. On the other hand, for the combined AMS-02 and CALET dataset, both the single and double-component DM models can provide reasonable fits. If we further take into the diffuse $\gamma$-ray constraints from Fermi-LAT, only the double-component DM models are allowed.

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Chao-Qiang Geng, Da Huang, Lu Yin. 2019-05-24. Multicomponent Dark Matter in the Light of CALET and DAMPE. https://doi.org/10.1016/j.nuclphysb.2020.115153

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