Parity Violation on Longitudinal Single-Spin Asymmetries at the EicC

2024/12/29 by Yong Du, Du, Yong · 1 citation
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2412.20469

openalex publication_date 2024/12/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We explore two longitudinal single-spin asymmetries induced from parity violation in neutral-current deep inelastic scattering at the proposed Electron-ion collider in China (EicC): A_PV^{e (p)} from longitudinally polarized (unpolarized) electrons scattering off unpolarized (longitudinally polarized) protons. We find A_PV^e, of O(10^-4), is generically one to three orders of magnitude larger than A_PV^p. We further estimate different uncertainty sources including statistics, parton distribution functions, and beam polarization, for both asymmetries, and then identify individually their dominance in different regimes of the Bjorken-x. Based on these results, we then advocate utilizing A_PV^p for the extraction of the weak mixing angle at two representative momentum transfer scales unexplored before, and we find a relative precision below 10% can be achieved at the EicC with an effective one-year operation time.

Cited by

• Electron-Ion Collider as a Discovery Tool for Invisible Dark Bosons

Related

• Longitudinal Single-Spin Asymmetries in Proton-Proton Scattering with a Hadronic Final State
• Signals of strong parity violation in deep inelastic scattering
• Relative Spin Polarization of Parity-Violating Asymmetries
• Parity Violation in Deep Inelastic Scattering with the SoLID Spectrometer at JLab
• Accessing the distribution of linearly polarized gluons in unpolarized hadrons