First Dark Matter Search Results From Coherent CAPTAIN-Mills

Abstract

This paper describes the operation of the Coherent CAPTAIN-Mills (CCM) detector located at the Lujan Neutron Science Center (LANSCE) at Los Alamos National Laboratory (LANL). CCM is a 10-ton liquid argon (LAr) detector located 20 meters from a high flux neutron/neutrino source and is designed to search for sterile neutrinos (${\nu }_s$) 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 ${\nu }_s$'s and LDM resulting from ${\pi }^{+}$ and ${\pi }^0$ decays in the tungsten target. New parameter space in a leptophobic dark matter model was excluded for DM masses between $\sim 2.0$ 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.

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• Probing Invisible Vector Meson Decays with NA64 and LDMX
• Constraining Non-Standard Interactions with Coherent Elastic Neutrino-Nucleus Scattering at the European Spallation Source
• First Leptophobic Dark Matter Search from Coherent CAPTAIN-Mills
• General Kinetic Mixing in Gauged $U(1{)}_{L_{\mu }-L_{\tau }}$ Model for Muon $g-2$ and Dark Matter
• Prospects for detecting axionlike particles at the Coherent CAPTAIN-Mills experiment
• Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment
• Recent Progress in Low Energy Neutrino Scattering Physics and Its Implications for the Standard and Beyond the Standard Model Physics
• Scintillation Light in SBND: Simulation, Reconstruction, and Expected Performance of the Photon Detection System
• COHERENT production of a dark fermion
• Inelastic nuclear scattering from neutrinos and dark matter
• Probing the dark sector with nuclear transition photons
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• A neutrino window to scalar leptoquarks: from low energy to colliders
• A Snowmass Whitepaper: Dark Matter Production at Intensity-Frontier Experiments
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• Searches for CEνNS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE
• Muon-Decay Parameters from COHERENT
• Testing the dark side of neutrino oscillations with the solar neutrino fog at Dark Matter experiments
• COHERENT at the Spallation Neutron Source
• Novel approach to investigate ATOMKI anomaly using Coherent CAPTAIN-Mills detectors
• Dark Matter Internal Pair Production -- A Novel Direct Detection Mechanism
• Constraining neutrino charges at beam experiments
• Atmospheric resonant production for light dark sectors
• Enhanced active-sterile neutrino polarizability at the intensity frontier