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Title: Dark matter search in nucleon, pion, and electron channels from a proton beam dump with MiniBooNE

Journal Article · · Physical Review. D.

A search for sub-GeV dark matter produced from collisions of the Fermilab 8 GeV Booster protons with a steel beam dump was performed by the MiniBooNE-DM Collaboration using data from 1.86 x 10(20) protons on target in a dedicated run. The MiniBooNE detector, consisting of 818 tons of mineral oil and located 490 meters downstream of the beam dump, is sensitive to a variety of dark matter initiated scattering reactions. Three dark matter interactions are considered for this analysis: elastic scattering off nucleons, inelastic neutral pion production, and elastic scattering off electrons. Multiple data sets were used to constrain flux and systematic errors, and time-of-flight information was employed to increase sensitivity to higher dark matter masses. No excess from the background predictions was observed, and 90% confidence level limits were set on the vector portal and leptophobic dark matter models. New parameter space is excluded in the vector portal dark matter model with a dark matter mass between 5 and 50 MeV c(-2). The reduced neutrino flux allowed to test if the MiniBooNE neutrino excess scales with the production of neutrinos. No excess of neutrino oscillation events were measured ruling out models that scale solely by number of protons on target independent of beam configuration at 4.6 sigma.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC). High Energy Physics (HEP) (SC-25); National Science Foundation (NSF); Science and Technology Facilities Council; Consejo Nacional de Ciencia y Tecnologia (CONACYT)
Contributing Organization:
MiniBooNE DM; The MiniBooNE-DM Collaboration
Grant/Contract Number:
AC02-07CH11359; 89233218CNA000001; AC02-06CH11357
OSTI ID:
1485523
Alternate ID(s):
OSTI ID: 1471729; OSTI ID: 1511238; OSTI ID: 1577251
Report Number(s):
LA-UR-18-26421; FERMILAB-PUB-18-334-ND; arXiv:1807.06137; PRVDAQ; 112004
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Vol. 98 Journal Issue: 11; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 95 works
Citation information provided by
Web of Science

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