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Title: First dark matter search results from Coherent CAPTAIN-Mills

Journal Article · · Physical Review. D.

This paper describes the operation of the Coherent CAPTAIN-Mills (CCM) detector located at the Los Alamos Neutron Science Center at Los Alamos National Laboratory. CCM is a 10-ton liquid argon detector located 20 meters from a high flux neutron/neutrino source and is designed to search for sterile neutrinos (νs’s) and light dark matter (LDM). An engineering run was performed in fall 2019 to study the characteristics of the CCM120 detector by searching for coherent scattering signals consistent with νs’s and LDM resulting from the production and decays of π+ and π0 in the tungsten target. New parameter space in a leptophobic dark matter (DM) model was excluded for DM masses between ~2.0 and 30 MeV. The lessons learned from this run have guided the development and construction of the new CCM200 detector that will begin operations in 2021 and significantly improve on these searches.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC). High Energy Physics (HEP)
Contributing Organization:
CCM Collaboration
Grant/Contract Number:
89233218CNA000001; IT100420; NSF-1801996; DOE-HEP DE-SC0009824.
OSTI ID:
2325169
Alternate ID(s):
OSTI ID: 1878050
Report Number(s):
LA-UR-21-24983; PRVDAQ; 012001
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Vol. 106 Journal Issue: 1; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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