Neutral-current weak interactions at an EIC

  • Y. X. Zhao
  • A. Deshpande
  • J. Huang
  • K. S. Kumar
  • S. Riordan
Regular Article - Experimental Physics

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 accessible in fixed target measurements. QED and QCD radiative corrections and effects of detector smearing are included with the calculations.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Y. X. Zhao
    • 1
  • A. Deshpande
    • 1
  • J. Huang
    • 2
  • K. S. Kumar
    • 1
  • S. Riordan
    • 1
  1. 1.Department of Physics and AstronomyStony Brook UniversityStony BrookUSA
  2. 2.Physics DepartmentBrookhaven National LabUptonUSA

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