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DOE OSTI · 1351738

Neutral-current weak interactions at an EIC

Zhao, Y. X.·Deshpande, A.·Huang, J.·Kumar, K. S.·Riordan, S.
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Abstract

Here, 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 γ-Z interference structure functions, F γZ 1 , F γZ 3 , g γZ 1 , g γZ 5 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 θ 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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73 NUCLEAR PHYSICS AND RADIATION PHYSICS

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Zhao, Y. X., Deshpande, A., Huang, J., Kumar, K. S., Riordan, S.. 2017-03-21. Neutral-current weak interactions at an EIC. https://doi.org/10.1140/epja%2Fi2017-12245-2

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