Two-Photon-Exchange Correction to Parity-Violating Elastic Electron-Proton Scattering

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dc.creatorAfanasev, Andrei V.
dc.creatorCarlson, Carl E.
dc.date2005-02-14
dc.date.accessioned2026-07-07T11:04:43Z
dc.date.available2026-07-07T11:04:43Z
dc.descriptionHigher-order QED effects play an important role in precision measurements of nucleon elastic form factors in electron scattering. Here we introduce a two-photon exchange QED correction to the parity-violating polarization asymmetry of elastic electron-proton scattering. We calculate this correction in the parton model using the formalism of generalized parton distributions, and demonstrate that it can reach several per cent in certain kinematics, becoming comparable in size with existing experimental measurements of strange-quark effects in the proton neutral weak current.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0502128
dc.identifierhttp://arxiv.org/abs/hep-ph/0502128
dc.identifierPhys.Rev.Lett.94:212301,2005
dc.identifierdoi:10.1103/PhysRevLett.94.212301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188986
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleTwo-Photon-Exchange Correction to Parity-Violating Elastic Electron-Proton Scattering
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