Two-Photon Exchange Contribution to Proton Form Factors in Time-Like region

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dc.creatorChen, D. Y.
dc.creatorZhou, H. Q.
dc.creatorDong, Y. B.
dc.date2008-06-16
dc.date.accessioned2026-07-07T11:51:41Z
dc.date.available2026-07-07T11:51:41Z
dc.descriptionWe estimate two-photon exchange contribution to the process $e^+ +e^- \to p + \bar{p}$. The two-photon exchange corrections to double spin polarization observables and form factors in the time-like region are calculated. The corrections are found to be small in magnitude, but with a strong angular dependence at fixed momentum transfer. These two features are the same as those in the space-like region. In the view of experiment, the double spin polarization observable $P_z$ deserves to be considered.
dc.description10 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0806.2489
dc.identifierhttp://arxiv.org/abs/0806.2489
dc.identifierPhys.Rev.C78:045208,2008
dc.identifierdoi:10.1103/PhysRevC.78.045208
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203984
dc.subjectNuclear Theory
dc.titleTwo-Photon Exchange Contribution to Proton Form Factors in Time-Like region
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