Neutral-Current Weak Interactions at an EIC

Abstract

A simulation study of measurements of neutral current structure functions of the nucleon at the future high-energy and high-luminosity polarized electron-ion collider (EIC) is presented. A new series of $\gamma -Z$ interference structure functions, $F_1^{\gamma Z}$, $F_3^{\gamma Z}$, $g_1^{\gamma Z}$, $g_5^{\gamma Z}$ become accessible via parity-violating asymmetries in polarized electron-nucleon deep inelastic scattering (DIS). Within the context of the quark-parton model, they provide a unique and, in some cases, yet-unmeasured combination of unpolarized and polarized parton distribution functions. The uncertainty projections for these structure functions using electron-proton collisions are considered for various EIC beam energy configurations. Also presented are uncertainty projections for measurements of the weak mixing angle ${\sin }^2{\theta }_W$ using electron-deuteron collisions which cover a much higher $Q^2$ than that is accessible in fixed target measurements. QED and QCD radiative corrections and effects of detector smearing are included with the calculations.

Submitted to EPJA

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Cited by in corpus (8)

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• Neutral-Current Electroweak Physics and SMEFT Studies at the EIC
• Heavy Neutral Leptons at the Electron-Ion Collider
• Revisiting quark and gluon polarization in the proton at the EIC
• Global analysis of polarized DIS & SIDIS data with improved small-$x$ helicity evolution
• NNLO jet production in neutral and charged current polarized deep inelastic scattering
• Dijet Production in Neutral Current and Charged Current Polarized Deep Inelastic Scattering
• Weak Neutral Current Studies with Positrons