Consequences of the Dresden-II reactor data for the weak mixing angle and new physics

Abstract

The Dresden-II reactor experiment has recently reported a suggestive evidence for the observation of coherent elastic neutrino-nucleus scattering, using a germanium detector. Given the low recoil energy threshold, these data are particularly interesting for a low-energy determination of the weak mixing angle and for the study of new physics leading to spectral distortions at low momentum transfer. Using two hypotheses for the quenching factor, we study the impact of the data on: (i) The weak mixing angle at a renormalization scale of $\sim 10\text{MeV}$, (ii) neutrino generalized interactions with light mediators, (iii) the sterile neutrino dipole portal. The results for the weak mixing angle show a strong dependence on the quenching factor choice. Although still with large uncertainties, the Dresden-II data provide for the first time a determination of ${\sin }^2{\theta }_W$ at such scale using coherent elastic neutrino-nucleus scattering data. Tight upper limits are placed on the light vector, scalar and tensor mediator scenarios. Kinematic constraints implied by the reactor anti-neutrino flux and the ionization energy threshold allow the sterile neutrino dipole portal to produce up-scattering events with sterile neutrino masses up to $\sim 8$MeV. In this context, we find that limits are also sensitive to the quenching factor choice, but in both cases competitive with those derived from XENON1T data and more stringent that those derived with COHERENT data, in the same sterile neutrino mass range.

11 pages, 5 figures. Statistical analysis improved; V3: matches published version in JHEP

References in corpus (17)

• Precision Measurement of the Weak Charge of the Proton
• COHERENT constraints on nonstandard neutrino interactions
• A COHERENT enlightenment of the neutrino Dark Side
• Constraints on elastic neutrino nucleus scattering in the fully coherent regime from the CONUS experiment
• Impact of form factor uncertainties on interpretations of coherent elastic neutrino-nucleus scattering data
• Coherent Elastic Neutrino-Nucleus Scattering at the European Spallation Source
• Physics results from the first COHERENT observation of CE$\nu$NS in argon and their combination with cesium-iodide data
• Novel constraints on neutrino physics beyond the standard model from the CONUS experiment
• Low-energy probes of sterile neutrino transition magnetic moments
• Muon Capture Constraints on Sterile Neutrino Properties
• First results from a search for coherent elastic neutrino-nucleus scattering (CE$\nu$NS) at a reactor site
• Atomic limits in the search for galactic dark matter
• CE$\nu$NS as a probe of flavored generalized neutrino interactions
• Detecting Beyond the Standard Model Interactions of Solar Neutrinos in Low-Threshold Dark Matter Detectors
• Dark matter detectors as a novel probe for light new physics
• Implications of the first evidence for coherent elastic scattering of reactor neutrinos
• Dark Matter-Neutrino Interconversion at COHERENT, Direct Detection, and the Early Universe

Cited by in corpus (20)

• Physics implications of a combined analysis of COHERENT CsI and LAr data
• Impact of the Dresden-II and COHERENT neutrino scattering data on neutrino electromagnetic properties and electroweak physics
• Bounds on new neutrino interactions from the first CE$\nu$NS data at direct detection experiments
• Nuclear neutron radius and weak mixing angle measurements from latest COHERENT CsI and atomic parity violation Cs data
• Physics implications of recent Dresden-II reactor data
• Implications of the first CONUS+ measurement of coherent elastic neutrino-nucleus scattering
• Neutrino Constraints and the ATOMKI X17 Anomaly
• Probing active-sterile neutrino transition magnetic moment on coherent elastic solar neutrino-nucleus scattering
• Probing neutrino magnetic moments and the XENON1T excess with coherent elastic solar neutrino scattering
• COHERENT production of a dark fermion
• 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
• Rock Neutron Backgrounds from FNAL Neutrino Beamlines in the $\nu$BDX-DRIFT Detector
• A neutrino window to scalar leptoquarks: from low energy to colliders
• Anapole moment of neutrinos and radioactive sources near liquid xenon detectors
• Testing the dark side of neutrino oscillations with the solar neutrino fog at Dark Matter experiments
• Measuring the Low-Energy Weak Mixing Angle with Supernova Neutrinos
• Phenomenological implications of the high-precision COHERENT germanium CE$\nu$NS data
• Probing the Solar ${}^8$B Neutrino Fog with XENONnT