Speaker
Description
We develop a systematic approach for analyzing any dark matter (DM) model that produces boosted dark matter (BDM) through semi-annihilation. We emphasize three points. First, any BDM analysis must be grounded on the correct relic density. Second, semi-annihilation intrinsically yields boosted by-products, whose contribution to indirect detection is generally non-negligible and should be treated on the same footing as that of the BDM. Finally, the detection of the semi-annihilation by-product must be investigated.
As a demonstration, we apply our approach to an electrophilic, single-component $Z_3$ fermionic DM model. We find that this model is severely constrained by both model-independent and model-specific experimental bounds, and that the BDM direct-detection rate is unobservably small and is everywhere overwhelmed by the detectability of the neutrino by-product.