Renormalization Scale-Fixing for Complex Scattering Amplitudes

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dc.creatorBrodsky, Stanley J.
dc.creatorLlanes-Estrada, Felipe J.
dc.date2005-12-20
dc.date2006-03-16
dc.date.accessioned2026-07-07T12:25:22Z
dc.date.available2026-07-07T12:25:22Z
dc.descriptionWe show how to fix the renormalization scale for hard-scattering exclusive processes such as deeply virtual meson electroproduction by applying the BLM prescription to the imaginary part of the scattering amplitude and employing a fixed-t dispersion relation to obtain the scale-fixed real part. In this way we resolve the ambiguity in BLM renormalization scale-setting for complex scattering amplitudes. We illustrate this by computing the H generalized parton distribution at leading twist in an analytic quark-diquark model for the parton-proton scattering amplitude which can incorporate Regge exchange contributions characteristic of the deep inelastic structure functions.
dc.descriptionSecond version, to be published in EPJC. several new comments and references
dc.identifierhttps://arxiv.org/abs/hep-ph/0512247
dc.identifierhttp://arxiv.org/abs/hep-ph/0512247
dc.identifierEur.Phys.J.C46:751,2006
dc.identifierdoi:10.1140/epjc/s2006-02520-0
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214590
dc.subjectHigh Energy Physics - Phenomenology
dc.titleRenormalization Scale-Fixing for Complex Scattering Amplitudes
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