XENONnT measures solar 8B neutrino coherent scattering at 3.3 sigma, finds no light dark matter, and constrains the weak mixing angle at low momentum transfer.
Precision measurement of the weak mixing angle in Moller scattering
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abstract
We report on a precision measurement of the parity-violating asymmetry in fixed target electron-electron (Moller) scattering: A_PV = -131 +/- 14 (stat.) +/- 10 (syst.) parts per billion, leading to the determination of the weak mixing angle \sin^2\theta_W^eff = 0.2397 +/- 0.0010 (stat.) +/- 0.0008 (syst.), evaluated at Q^2 = 0.026 GeV^2. Combining this result with the measurements of \sin^2\theta_W^eff at the Z^0 pole, the running of the weak mixing angle is observed with over 6 sigma significance. The measurement sets constraints on new physics effects at the TeV scale.
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Analysis of new COHERENT germanium CEνNS data yields updated constraints on the weak mixing angle, neutrino charge radii, germanium neutron rms radius, and bounds on neutrino non-standard interactions via global fits.
A chiral flavor-specific U(1)_X model with two Higgs doublets accommodates the ATOMKI 17 MeV anomaly via a Z' boson whose parameter space remains consistent with atomic parity violation, beam dump, meson decay, and neutrino scattering bounds.
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Probing the Solar $^8$B Neutrino Fog with XENONnT
XENONnT measures solar 8B neutrino coherent scattering at 3.3 sigma, finds no light dark matter, and constrains the weak mixing angle at low momentum transfer.
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Phenomenological implications of the high-precision COHERENT germanium CE$\nu$NS data
Analysis of new COHERENT germanium CEνNS data yields updated constraints on the weak mixing angle, neutrino charge radii, germanium neutron rms radius, and bounds on neutrino non-standard interactions via global fits.
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A Flavor Specific Chiral $U(1)_X$ Framework for Explaining the ATOMKI Anomaly
A chiral flavor-specific U(1)_X model with two Higgs doublets accommodates the ATOMKI 17 MeV anomaly via a Z' boson whose parameter space remains consistent with atomic parity violation, beam dump, meson decay, and neutrino scattering bounds.