COHERENT production of a dark fermion

Abstract

We consider the possible production of a new MeV-scale fermion at the COHERENT experiment. The new fermion, belonging to a dark sector, can be produced through the up-scattering process of neutrinos off the nuclei and the electrons of the detector material, via the exchange of a light vector or scalar mediator. We perform a detailed statistical analysis of the combined COHERENT CsI and LAr data sets and obtain up-to-date constraints on the couplings and masses of the dark fermion and mediators. We finally briefly comment about the stability of the dark fermion.

26 pages, 10 figures, 1 table; typos corrected, references added

References in corpus (27)

• Observation of Coherent Elastic Neutrino-Nucleus Scattering
• First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
• Search for a dark photon in e+e- collisions at BABAR
• Status of non-standard neutrino interactions
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• Physics implications of a combined analysis of COHERENT CsI and LAr data
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• Consequences of the Dresden-II reactor data for the weak mixing angle and new physics
• EFT analysis of New Physics at COHERENT
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• Physics implications of recent Dresden-II reactor data
• The RED-100 experiment
• Dark Matter-Neutrino Interconversion at COHERENT, Direct Detection, and the Early Universe
• Constraining scalar leptoquarks using COHERENT data
• Rock Neutron Backgrounds from FNAL Neutrino Beamlines in the $\nu$BDX-DRIFT Detector
• Constraining Non-minimal Dark Sector Scenarios with the COHERENT Neutrino Scattering Data

Cited by in corpus (7)

• Bounds on new neutrino interactions from the first CE$\nu$NS data at direct detection experiments
• Implications of the first CONUS+ measurement of coherent elastic neutrino-nucleus scattering
• Up-scattering production of a sterile fermion at DUNE: complementarity with spallation source and direct detection experiments
• Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering
• Constraining low scale dark hypercharge symmetry at spallation, reactor and Dark Matter direct detection experiments
• Light vector bosons and the weak mixing angle in the light of future germanium-based reactor CE$\nu$NS experiments
• A neutrino window to scalar leptoquarks: from low energy to colliders