Partonic calculation of γZ Exchange Corrections to Parity-Violating Elastic Electron-Proton Scattering

2009/03/06 by Yu Chun Chen, Chen, Yu Chun, Chung Wen Kao +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.0903.1098

4pages, 5 figs

arxiv created 2009/03/06 · arxiv updated 2009/12/01

Abstract

We calculate γZ exchange corrections to the parity-violating asymmetry of the elastic electron-proton scattering in a parton model using the formalism of generalized parton distributions(GPDs). We also examine the validity of the zero-momentum-transfer approximation adopted in the literatures and find that it overestimates the γZ exchange effect significantly at the forward scattering angles.

Related

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• Radiative corrections and parity-violating electron-nucleon scattering
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