Solar reflection of sub-GeV dark matter

2 Sep 2021, 17:10
Talk in parallel session Dark Matter and its detection Discussion Panel Dark Matter 8


Timon Emken (Stockholm University)


Direct detection experiments are searching for rare interactions between dark matter (DM) particles and ordinary matter. If the mass of these dark particles is too low, their kinetic energy does not suffice to trigger these detectors leaving them incapable to observe DM. Processes that boost DM particles can therefore extend the observational reach of direct DM searches to lower masses. I will discuss the mechanism and phenomenology of solar reflection, where DM particles get accelerated via a collision with a solar electron or nucleus. Compared to standard halo DM, solar reflection not only allows to probe lighter masses, a solar reflection signal would also feature a novel modulation signature.

Reference to paper (DOI or arXiv) 2102.12483

Primary author

Timon Emken (Stockholm University)

Presentation Materials

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