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Constraints on heavy dark matter annihilation and decay from electron and positron cosmic ray spectra

Holger Motz

SciPost Phys. Proc. 12, 035 (2023) · published 4 July 2023

Proceedings event

14th International Conference on Identification of Dark Matter


Annihilation or decay of dark matter (DM) could contribute to the electron and positron cosmic-ray flux, allowing for constraints on DM parameters from its measurement. CALET is directly measuring the energy spectrum of electron+positron cosmic rays up into the TeV region most important for studying heavy DM, while AMS-02 provides a positron-only spectrum below the TeV range. Limits on DM annihilation and decay well into the TeV mass range have been derived from a combined analysis of both data-sets with an astrophysical background model including pulsars as the origin of the positron excess and individual nearby supernova remnant sources.

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