Hard Exclusive Electroproduction of Pions

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dc.creatorMankiewicz, L.
dc.creatorPiller, G.
dc.creatorRadyushkin, A.
dc.date1998-12-21
dc.date.accessioned2026-07-07T10:52:59Z
dc.date.available2026-07-07T10:52:59Z
dc.descriptionWe investigate the exclusive electroproduction of pi^+ mesons from nucleons. To leading twist, leading order alpha_s accuracy the corresponding production amplitude can be decomposed into pseudovector and pseudoscalar parts. Both can be expressed in terms of quark double distribution functions of the nucleon. While the pseudovector contribution is connected to ordinary polarized quark distributions, the pseudoscalar part can be related to one pion t-channel exchange. We observe that the pseudovector part of the production amplitude is important at x < 0.1. On the other hand, for 0.1 < x < 0.4 contributions from one pion exchange dominate.
dc.description12 pages LaTeX
dc.identifierhttps://arxiv.org/abs/hep-ph/9812467
dc.identifierhttp://arxiv.org/abs/hep-ph/9812467
dc.identifierEur.Phys.J.C10:307-312,1999
dc.identifierdoi:10.1007/s100529900045
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185339
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHard Exclusive Electroproduction of Pions
dc.typetext

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