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SUMMARY:Boosted dark matter and directional direct detection
DTSTART;VALUE=DATE-TIME:20260520T061000Z
DTEND;VALUE=DATE-TIME:20260520T065000Z
DTSTAMP;VALUE=DATE-TIME:20260530T133221Z
UID:indico-contribution-2446@indico.itp.ac.cn
DESCRIPTION:Speakers: Takaaki Nomura (Sichuan University)\nWe discuss a tw
 o-component dark matter model in which one component\, heavier dark matter
 \, annihilates into a lighter dark matter. The lighter dark matter is expe
 cted to generate detectable signals in detectors due to its enhanced momen
 tum\, enabling direct detection even for MeV-scale dark matter. We investi
 gate the effectiveness of directional direct detections\, especially the n
 uclear emulsion detector NEWSdm\, in verifying these boosted dark matter p
 articles through nuclear recoil. In particular\, we focus on light nuclei\
 , such as protons and carbon\, as suitable targets for this detection meth
 od due to their high sensitivity to MeV-scale dark matter. By modeling the
  interactions mediated by a dark photon in a hidden U(1)D gauge symmetry f
 ramework\, we calculate the expected dark matter flux and scattering rates
  for various detector configurations. Our results show that nuclear emulsi
 ons have the potential to yield distinct\, direction-sensitive dark matter
  signals from the Galactic center\, providing a new way to probe low-mass 
 dark matter parameter spaces that evade conventional detection methods.\n\
 nhttps://indico.itp.ac.cn/event/419/contributions/2446/
LOCATION:Small Lecture Hall\, Chongqing University Library (图书馆小
 报告厅) 1F-9
URL:https://indico.itp.ac.cn/event/419/contributions/2446/
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