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

Journal Article · Sun Jan 01 00:00:00 EST 2017 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2017/01/016· OSTI ID:22680100

Rott, Carsten; In, Seongjin ^[1]; Kumar, Jason ^[2]; Yaylali, David ^[3]

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1. Department of Physics, Sungkyunkwan University, 2066 Seobu-ro, Suwon 440-746 (Korea, Republic of)
2. Department of Physics and Astronomy, University of Hawai'i, 2505 Correa Road, Honolulu, HI 96822 (United States)
3. Department of Physics, University of Arizona, 1118 E. Fourth Street, Tucson, AZ 85721 (United States)

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 find that directional information can enhance the signal to background ratio by up to a factor of 5.

• OSTI ID: 22680100
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANNIHILATION
CHARGED-CURRENT INTERACTIONS
COMPARATIVE EVALUATIONS
GEV RANGE
KAONS
NEUTRINO DETECTORS
NEUTRINOS
NONLUMINOUS MATTER
PARTICLE DECAY
PARTICLE TRACKS
PROTONS
SUN