New reactor antineutrino data from CONUS germanium detectors improve upper limits on neutrino magnetic moment to 5.18e-11 mu_B, millicharge to 1.76e-12 e0, NSI scale to 145 GeV, and yield sin^2 theta_W = 0.28 +0.03/-0.04 at ~10 MeV.
Producing a new Fermion in Coherent Elastic Neutrino-Nucleus Scattering: from Neutrino Mass to Dark Matter
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abstract
We consider the production of a new MeV-scale fermion in coherent elastic neutrino-nucleus scattering. The effect on the measurable nucleon recoil spectrum is calculated. Assuming that the new fermion couples to neutrinos and quarks via a singlet scalar, we set limits on its mass and coupling using COHERENT data and also determine the sensitivity of the CONUS experiment. We investigate the possible connection of the new fermion to neutrino mass generation. The possibility of the new fermion being the dark matter particle is also studied.
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High-statistics CEνNS measurements at J-PARC are feasible with significant sensitivity to relevant particle physics scenarios using currently funded detectors.
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New constraints on physics within and beyond the standard model from the latest CONUS datasets
New reactor antineutrino data from CONUS germanium detectors improve upper limits on neutrino magnetic moment to 5.18e-11 mu_B, millicharge to 1.76e-12 e0, NSI scale to 145 GeV, and yield sin^2 theta_W = 0.28 +0.03/-0.04 at ~10 MeV.
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Coherent Elastic Neutrino-Nucleus Scattering at the Japan Proton Accelerator Research Complex
High-statistics CEνNS measurements at J-PARC are feasible with significant sensitivity to relevant particle physics scenarios using currently funded detectors.