Daily modulation as a smoking gun of dark matter with significant stopping rate

C. Kouvaris, I. M. Shoemaker

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review


We point out that for a range of parameters, the flux of DM may be stopped significantly by its interactions with the Earth. This can significantly degrade the sensitivity of direct detection experiments to DM candidates with large interactions with terrestrial nuclei. We find that a significant region of parameter space remains unconstrained for DM less than or similar to a few GeV. For DM candidates with moderate levels of stopping power, the flux of DM may be blocked from below but not above a detector, thereby producing a novel daily modulation. This can be explored by low threshold detectors placed on the surface or in shallow sites in the south hemisphere.
TidsskriftPhysical Review D
Udgave nummer9
StatusUdgivet - 2014

Bibliografisk note

ISI Document Delivery No.: AZ4IL Times Cited: 1 Cited Reference Count: 50 Kouvaris, Chris Shoemaker, Ian M. Danish National Research Foundation [DNRF90] We are more than grateful to Peter Sigmund for countless discussions and his patience in explaining the mechanisms of stopping power to us. We would also like to thank E. Lidorikis for clarifying our questions regarding graphite. The CP3-Origins center is partially funded by the Danish National Research Foundation, Grant No. DNRF90. 1 AMER PHYSICAL SOC COLLEGE PK PHYS REV D