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Impact of parity-violating deep-inelastic scattering on the weak mixing angle and high-$x$ parton distributions
One-line summary
A solar energy research paper on Impact of parity-violating deep-inelastic scattering on the weak mixing angle and high-$x$ parton distributions.
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Chinese explanation / 中文解读
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Original abstract
We discuss the impact of neutral current parity-violating deep-inelastic scattering (PVDIS) of electrons from protons and deuterons on the determination of the weak mixing angle, $\sin^{2}{θ_{\rm W}}$, and parton distribution functions (PDFs) at large parton momentum fractions $x$. Using the JAM global QCD analysis framework, we study the effect of incorporating pseudodata simulated for 11 GeV and 22 GeV Jefferson Lab kinematics, accounting for radiative corrections in a factorized QED+QCD approach and uncertainties from higher twist corrections in $γZ$ exchange. We find that including future PVDIS pseudodata could yield important constraints on the value of $\sin^{2}{θ_{\rm W}}$ at low $Q^2$ and on the high-$x$ behavior of the strange quark and $d/u$ PDF ratio. The strong correlation between $\sin^{2}{θ_{\rm W}}$ and the $x$ dependence of the PDFs demonstrates the necessity for simultaneous analysis of QCD and electroweak quantities to ensure an unbiased determination of the weak mixing angle from PVDIS data.
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