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Cosmology and Signals of Light Dark Matter

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If you have a question about this talk, please contact James Bonifacio.

Strong bounds from CMB observations have pushed us away from the standard WIMP picture of dark matter (DM). Nevertheless, a dark matter candidate of thermal origin does not require elastic weak interactions to lead to the observed DM abundance. In fact, the simple appearance of Majorana masses changes the standard picture of WIMP DM . In this talk, I will present a careful analysis of the cosmological evolution of light pseudo-Dirac DM. I will focus on the importance of carefully computing the DM abundance to understand the DM signals (such as the Xenon1T excess) and on the complementarity of different searches.

This talk is part of the Cosmology Lunch series.

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