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Title: Directional searches at DUNE for sub-GeV monoenergetic neutrinos arising from dark matter annihilation in the Sun

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [1];  [2];  [3]
  1. Sungkyunkwan Univ., Suwon (Republic of Korea)
  2. Univ. of Hawaii, Honolulu, HI (United States)
  3. Univ. of Arizona, Tucson, AZ (United States)

Here, we consider the use of directionality in the search for monoenergetic sub-GeV neutrinos arising from the decay of stopped kaons, which can be produced by dark matter annihilation in the core of the Sun. When these neutrinos undergo charged-current interactions with a nucleus at a neutrino detector, they often eject a proton which is highly peaked in the forward direction. The direction of this track can be measured at DUNE, allowing one to distinguish signal from background by comparing on-source and off-source event rates. We discover that directional information can enhance the signal to background ratio by up to a factor of 5.

Research Organization:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
Grant/Contract Number:
SC0010504; FG02-13ER-41976; PHY-1250573
OSTI ID:
1598590
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 01; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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