New insights into nuclear physics and weak mixing angle using electroweak probes

Abstract

Using the new results on coherent elastic neutrino-nucleus scattering data in cesium-iodide provided by the COHERENT experiment, we determine a new measurement of the average neutron rms radius of ${}^{133}\text{Cs}$ and ${}^{127}\text{I}$. In combination with the atomic parity violation (APV) experimental result, we derive the most precise measurement of the neutron rms radii of ${}^{133}\text{Cs}$ and ${}^{127}\text{I}$, disentangling for the first time the contributions of the two nuclei. By exploiting these measurements we determine the corresponding neutron skin values for ${}^{133}\text{Cs}$ and ${}^{127}\text{I}$. These results suggest a preference for models which predict large neutron skin values, as corroborated by the only other electroweak measurements of the neutron skin of ${}^{208}\text{Pb}$ performed by PREX experiments. Moreover, for the first time, we obtain a data-driven APV+COHERENT measurement of the low-energy weak mixing angle with a percent uncertainty, independent of the value of the average neutron rms radius of ${}^{133}\text{Cs}$ and ${}^{127}\text{I}$, that is allowed to vary freely in the fit. The value of the low-energy weak mixing angle that we found is slightly larger than the standard model prediction.

11 pages

References in corpus (14)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Observation of Coherent Elastic Neutrino-Nucleus Scattering
• Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies
• Neutron skin of 208Pb, nuclear symmetry energy, and the parity radius experiment
• The Giant Dipole Resonance as a quantitative constraint on the symmetry energy
• Neutron skin thickness in droplet model with surface width dependence: indications of softness of the nuclear symmetry energy
• 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
• Physics results from the first COHERENT observation of CE$\nu$NS in argon and their combination with cesium-iodide data
• Constraints on the Symmetry Energy from PREX-II in the Multimessenger Era
• Muon and electron g-2 and proton and cesium weak charges implications on dark ${\mathbf{Z}}_{\mathbf{d}}$ models
• The MOLLER Experiment: An Ultra-Precise Measurement of the Weak Mixing Angle Using Møller Scattering

Cited by in corpus (25)

• 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
• Impact of COHERENT measurements, cross section uncertainties and new interactions on the neutrino floor
• Nuclear neutron radius and weak mixing angle measurements from latest COHERENT CsI and atomic parity violation Cs data
• Bounds on new neutrino interactions from the first CE$\nu$NS data at direct detection experiments
• Physics implications of recent Dresden-II reactor data
• Electron Scattering and Neutrino Physics
• A D${}_2$O detector for flux normalization of a pion decay-at-rest neutrino source
• Constraining Non-Standard Interactions with Coherent Elastic Neutrino-Nucleus Scattering at the European Spallation Source
• Constraining Light Mediators via Detection of Coherent Elastic Solar Neutrino Nucleus Scattering
• Reactor antineutrinos CE$\nu$NS on germanium: CONUS+ and TEXONO as a new gateway to SM and BSM physics
• Incorporating the weak mixing angle dependence to reconcile the neutron skin measurement on 208Pb by PREX-II
• Probing neutrino magnetic moments and the XENON1T excess with coherent elastic solar neutrino scattering
• COHERENT production of a dark fermion
• On the impact of the Migdal effect in reactor CE$\nu$NS experiments
• Constraining scalar leptoquarks using COHERENT data
• Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering
• Refined determination of the weak mixing angle at low energy
• Joint analysis of reactor and accelerator CE$\nu$NS data on germanium: implications for the Standard Model and nuclear physics
• Light vector bosons and the weak mixing angle in the light of future germanium-based reactor CE$\nu$NS experiments
• Simultaneous Extraction of the Weak Radius and the Weak Mixing Angle from Parity-Violating Electron Scattering on ${}^{12}\mathrm{C}$
• A neutrino window to scalar leptoquarks: from low energy to colliders
• New Physics searches in a low threshold scintillating argon bubble chamber measuring coherent elastic neutrino-nucleus scattering in reactors
• Searches for CEνNS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE
• Bounds on new physics with data of the Dresden-II reactor experiment and COHERENT