(In)Direct detection of boosted dark matter

[摘要] We present a new multi-component dark matter model with a novel experimental signature that mimics neutral current interactions at neutrino detectors. In our model, the dark matter is composed of two particles, a heavier dominant component that annihilates to produce a boosted lighter component that we refer to as boosted dark matter. The lighter component is relativistic and scatters off electrons in neutrino experiments to produce Cherenkov light. This model combines the indirect detection of the dominant component with the direct detection of the boosted dark matter. Directionality can be used to distinguish the dark matter signal from the atmospheric neutrino background. We discuss the viable region of parameter space in current and future experiments.

[发布机构] Maryland Center for Fundamental Physics, University of Maryland, College Park; MD; 20742, United States^1;Perimeter Institute, 31 Caroline Street, North Waterloo; ON; 2Y5, Canada^2;Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge; MA; 02139, United States^3

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Atmospheric neutrinos;Cherenkov light;Direct detection;Indirect detection;Neutral current interactions;Neutrino detectors;Neutrino experiments;Parameter spaces