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COHERENT constraints on nonstandard neutrino interactions
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COHERENT constraints on nonstandard neutrino interactions
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Coherent elastic neutrino-nucleus scattering consistent with the standard model has been observed by the COHERENT experiment. We study nonstandard neutrino interactions using the detected spectrum. For the case in which the nonstandard interactions (NSI) are induced by a vector mediator lighter than 50 MeV, we obtain constraints on the coupling of the mediator. For a heavier mediator, we find that degeneracies between the NSI parameters severely weaken the constraints. However, these degeneracies do not affect COHERENT constraints on the effective NSI parameters for matter propagation in the Earth.
Forward citations
Cited by 4 Pith papers
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Testing lepton non-unitarity with the next generation of Germanium-based CE$\nu$NS reactor experiments
A future 100-kg Germanium reactor CEνNS experiment could constrain lepton non-unitarity to 1−α11² ≈ 0.005 and, under low-scale seesaw assumptions, probe new-physics scales up to ~2.5 TeV.
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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.
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Prospects for Exploring Non-Standard Neutrino Properties with Argon-Based CEvNS Experiments
Argon CEvNS detectors at stopped-pion sources project sin²θW precision near 1%, neutrino magnetic-moment limits near 10⁻⁹ μB, charge-radius limits near 10⁻³² cm², and vector NSI sensitivity at the 10⁻² level.
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