Partonic calculation of $γZ$ Exchange Corrections to Parity-Violating Elastic Electron-Proton Scattering - Nuclear TheoryReportar como inadecuado




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Abstract: We calculate $\gamma Z$ exchange corrections to the parity-violatingasymmetry of the elastic electron-proton scattering in a parton model using theformalism of generalized parton distributionsGPDs. We also examine thevalidity of the zero-momentum-transfer approximation adopted in the literaturesand find that it overestimates the $\gamma Z$ exchange effect significantly atthe forward scattering angles.



Autor: Yu Chun Chen, Chung Wen Kao, Marc Vanderhaeghen

Fuente: https://arxiv.org/







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