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Impact of the Dresden-II and COHERENT neutrino scattering data on neutrino electromagnetic properties and electroweak physics
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abstract
Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) represents a powerful tool to investigate key electroweak physics parameters and neutrino properties since its first observation in 2017 by the COHERENT experiment exploiting the spallation neutron source at Oak Ridge National Laboratory. In light of the recent detection of such a process with antineutrinos produced by the Dresden-II reactor scattering off a germanium detector, we revisit the limits so far set on the neutrino magnetic moments, charge radii and millicharges as well as on the weak mixing angle. In order to do so, we also include the contribution of elastic neutrino-electron scattering, whose effect becomes non negligible in some beyond the Standard Model theories. By using different hypotheses for the germanium quenching factor and the reactor antineutrino flux, we provide a measurement of the weak mixing angle at the low-energy scale of the Dresden-II reactor experiment and, thanks to a combined analysis with the latest cesium iodide and argon data set released by the COHERENT Collaboration, we deliver updated limits for the neutrino electromagnetic properties. Interestingly, we are able to set a new best upper limit on the electron neutrino charge radius and significantly improve the other CE$\nu$NS-related limits on the neutrino electric charge and magnetic moment.
Forward citations
Cited by 15 Pith papers
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Precision Tests of SM and new physics with the COHERENT Ge-mini and TEXONO data
New constraints on neutrino electromagnetic properties, light mediators, and sterile-neutrino upscattering are derived from COHERENT Ge-mini and TEXONO data, with TEXONO giving particularly strong millicharge and magn...
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Prospect of the NUCLEUS Experiment at Chooz for Coherent Elastic Neutrino-Nucleus Scattering and New Physics Searches
Assuming the low-energy background can be eliminated, a 7-gram NUCLEUS detector at Chooz is projected to see coherent neutrino-nucleus scattering at 4.7σ in one year and to set competitive bounds on new neutrino interactions.
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EFT analysis of New Physics at COHERENT with Dirac neutrinos
COHERENT data can constrain flavor-general new physics in both neutrino production and detection once right-handed Dirac neutrinos are included, and the full rate reduces to a compact set of effective nuclear charges.
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Neutrino electromagnetic properties and sterile dipole portal in light of the first solar CE$\nu$NS data
The paper derives the first 90% CL limits on neutrino magnetic moments, millicharges, and the sterile dipole portal from solar 8B CEνNS data in XENONnT and PandaX-4T.
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Bounds on new neutrino interactions from the first CE$\nu$NS data at direct detection experiments
Using the first solar 8B CEνNS hints from XENONnT and PandaX-4T, the authors derive a combined low-energy weak mixing angle and place 90% limits on scalar, vector, axial-vector, and tensor neutrino mediator couplings.
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Testing light and heavy vector mediators with solar CE$\nu$NS measurements
Combined solar CEνNS data from XENONnT, PandaX-4T, and LZ yield competitive constraints on vector NSI and light mediators and a weak mixing angle measurement at low momentum transfer.
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Elastic neutrino-electron scattering perspectives at nuclear reactors
Projections show CLOUD and TAO could improve low-energy weak mixing angle measurements to 8-11% via elastic neutrino-electron scattering, with competitive magnetic moment and NSI limits.
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How Charged Can Neutrinos Be?
Mini-charged neutrinos are viable only for flavor-universal U(1)_X extensions such as U(1)_{B-L} and U(1)_L, and their experimental constraints are model-dependent, with upper bounds ranging from 10^-19 e to 10^-21 e.
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Reactor antineutrinos CE$\nu$NS on germanium: CONUS+ and TEXONO as a new gateway to SM and BSM physics
CONUS+ and TEXONO reactor CEνNS data are consistent with the Standard Model and yield the most stringent limit on the electron neutrino millicharge through neutrino-electron scattering.
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Probing Standard Model and Beyond with Reactor CE$\nu$NS Data of CONUS+ experiment
Using CONUS+ reactor data, the authors constrain the weak mixing angle, neutrino electromagnetic properties, and light scalar and vector mediators, finding their most notable limit on neutrino millicharge when electro...
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Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering
Projected ESS CEνNS measurements would improve current constraints on the weak mixing angle, nuclear neutron radii, and several new physics scenarios by large factors, and would lead in some unexplored mass ranges.
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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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When backgrounds become signals: neutrino interactions in xenon-based dark matter detectors
Solar neutrino data from three xenon dark matter experiments provide updated standard-model tests and competitive limits on neutrino electromagnetic properties.
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Neutrino magnetic moments: effective versus fundamental parameters
Effective neutrino magnetic moments are experiment-dependent; using solar neutrino data from dark matter detectors, the authors derive new bounds on the fundamental Majorana transition moments and translate them into ...
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Exploring the Standard Model and Beyond from the Evidence of CE$\nu$NS with Reactor Antineutrinos in CONUS+
Fitting the CONUS+ reactor CEνNS event count yields sin²θW = 0.268 ± 0.047, µν < 5.6×10⁻¹⁰ µB, and NSI bounds similar to COHERENT, all consistent with the Standard Model.
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