Dispersive approach to two-photon exchange in elastic electron-proton scattering
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DOI: 10.1103/physrevc.95.065209
Abstract: We examine the two-photon exchange corrections to elastic electron-proton scattering within a dispersive approach, including contributions from both Nucleon and Delta intermediate states. The dispersive analysis avoids off-shell uncertainties inherent in traditional approaches based on… read more here.
Keywords: two photon; elastic electron; photon exchange; electron proton ... See more keywords
Two-photon exchange effects in e+e−→π+π− and timelike pion electromagnetic form factor
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DOI: 10.1103/physrevd.98.054003
Abstract: The two-photon-exchange (TPE) effects in the process $e^+e^- \rightarrow \pi^+\pi^-$ at large momentum transfer are discussed within the perturbative QCD (pQCD). The contributions from the twist-2 and twist-3 distribution amplitudes (DAs) of pion are considered… read more here.
Keywords: electromagnetic form; two photon; form factor; exchange ... See more keywords