The upper edge of the PISN black hole mass gap shifts by up to 30 solar masses due to nuclear reaction rate uncertainties, primarily the 12C(α,γ)16O rate, while remaining robust to resolution variations unlike the lower edge.
Weak mixing angle at low energies
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abstract
We determine the weak mixing angle in the MS-bar scheme at energy scales relevant for present and future low energy electroweak measurements. We relate the renormalization group evolution of the weak mixing angle to the corresponding evolution of the QED coupling and include higher-order terms in alpha_s and alpha that had not been treated in previous analyses. We also up-date the analysis of non-perturbative hadronic contributions and argue that the associated uncertainty is small compared to anticipated experimental errors. The resulting value of the low-energy weak mixing angle is sin^2 theta_W (0) = 0.23867 +- 0.00016.
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2026 2verdicts
UNVERDICTED 2representative citing papers
Combined fit of two germanium CEνNS datasets yields refined neutron radius, skin thickness, and sin²θ_W at low Q, presented versus Lindhard quenching variations and benchmarked against Shell Model form factors.
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The location of the upper edge of the pair-instability supernovae black hole mass gap
The upper edge of the PISN black hole mass gap shifts by up to 30 solar masses due to nuclear reaction rate uncertainties, primarily the 12C(α,γ)16O rate, while remaining robust to resolution variations unlike the lower edge.
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Refined extraction of electroweak and nuclear parameters from germanium CE$\nu$NS data
Combined fit of two germanium CEνNS datasets yields refined neutron radius, skin thickness, and sin²θ_W at low Q, presented versus Lindhard quenching variations and benchmarked against Shell Model form factors.