Dispersion representations for hard exclusive processes

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dc.creatorDiehl, M.
dc.creatorIvanov, D. Yu.
dc.date2007-07-03
dc.date.accessioned2026-07-07T11:17:27Z
dc.date.available2026-07-07T11:17:27Z
dc.descriptionSeveral hard exclusive scattering processes admit a description in terms of generalized parton distributions and perturbative hard-scattering kernels. Both the physical amplitude and the hard-scattering kernels fulfill dispersion relations. We give a detailed investigation of their consistency at all orders in perturbation theory. The results shed light on the information about generalized parton distributions that can be extracted from the real and imaginary parts of exclusive amplitudes. They also provide a practical consistency check for models of these distributions in which Lorentz invariance is not exactly satisfied.
dc.description24 pages
dc.identifierhttps://arxiv.org/abs/0707.0351
dc.identifierhttp://arxiv.org/abs/0707.0351
dc.identifierEur.Phys.J.C52:919-932,2007
dc.identifierdoi:10.1140/epjc/s10052-007-0401-9
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193011
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDispersion representations for hard exclusive processes
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