Nucleon Helicity in Pion Photoproduction

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dc.creatorJenkins, D. A.
dc.creatorStrakovsky, I. I.
dc.date1995-09-13
dc.date.accessioned2026-07-07T11:14:34Z
dc.date.available2026-07-07T11:14:34Z
dc.descriptionPion-photoproduction data is examined to check for the nucleon-helicity conservation predicted by asymptotic QCD. The differential cross section shows agreement with constituent-counting rules, and polarization data is not in disagreement with conservation of nucleon helicity. However large uncertainties in the polarization measurements do not allow a conclusive statement. The helicity amplitudes from a partial-wave analysis are also examined for helicity conservation. While the amplitudes become small as $s$ increases, the $s$ dependence of the helicity-conserving amplitudes is similar to the dependence of the non-conserving amplitudes.
dc.descriptionplain tex, 6 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/9509289
dc.identifierhttp://arxiv.org/abs/hep-ph/9509289
dc.identifierPhys.Rev.C52:3499-3501,1995
dc.identifierdoi:10.1103/PhysRevC.52.3499
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192111
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNucleon Helicity in Pion Photoproduction
dc.typetext

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