First Leptophobic Dark Matter Search from Coherent CAPTAIN-Mills
A. A. Aguilar-Arevalo, D. S. M. Alves, S. Biedron, J. Boissevain, M., Borrego, M. Chavez-Estrada, A. Chavez, J. M. Conrad, R. L. Cooper, A. Diaz,, J. R. Distel, J. C. D'Olivo, E. Dunton, B. Dutta, A. Elliott, D. Evans, D., Fields, J. Greenwood, M. Gold, J. Gordon, E. Guarincerri

TL;DR
This paper presents the first search for leptophobic dark matter using the Coherent CAPTAIN-Mills liquid argon detector, achieving new sensitivity to light dark matter models despite early-stage limitations.
Contribution
It reports the initial results of a novel leptophobic dark matter search with a liquid argon detector, demonstrating potential to explore unexplored parameter space.
Findings
Excluded dark matter masses between 9 and 50 MeV at 90% C.L.
Achieved sensitivity to new parameter space of light dark matter models.
Demonstrated feasibility of using CCM detector for leptophobic dark matter detection.
Abstract
We report the first results of a search for leptophobic dark matter (DM) from the Coherent CAPTAIN-Mills (CCM) liquid argon (LAr) detector. An engineering run with 120 photomultiplier tubes (PMTs) and protons-on-target (POT) was performed in Fall 2019 to study the characteristics of the CCM detector. The operation of this 10-ton detector was strictly light-based with a threshold of 50 keV and used coherent elastic scattering off argon nuclei to detect DM. Despite only 1.5 months of accumulated luminosity, contaminated LAr, and non-optimized shielding, CCM's first engineering run already achieved sensitivity to previously unexplored parameter space of light dark matter (LDM) models with a baryonic vector portal. With an expected background of 115,005 events, we observe 115,005+16.5 events which is compatible with background expectations. For a benchmark…
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Taxonomy
TopicsDark Matter and Cosmic Phenomena · Atomic and Subatomic Physics Research · Particle physics theoretical and experimental studies
