Pionic transparency in semi-exclusive electroproduction off nuclei

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dc.creatorKaskulov, Murat M.
dc.creatorGallmeister, Kai
dc.creatorMosel, Ulrich
dc.date2008-08-19
dc.date2009-02-02
dc.date.accessioned2026-07-07T12:42:38Z
dc.date.available2026-07-07T12:42:38Z
dc.descriptionWe investigate the early onset of pionic color transparency ($π$CT) observed at Jefferson Laboratory (JLAB) in semi--exclusive pion electroproduction reaction $A(e,e'π^+)$ off nuclei. In the present description the primary $γ^*p \to π^+ n$ interaction is described very well both for the longitudinal and the transverse polarizations. For the final state interactions a coupled--channel treatment of the interactions of transmitted hadrons allows to go beyond the Glauber approximation. We show that a proper distinction between the soft hadronic and hard partonic components of the electroproduction amplitude is essential for a quantitative description of the measured nuclear transparency. The data are well reproduced if one assumes that point--like configurations are produced in the regime of hard deep--inelastic scattering (DIS) off partons and dominate the transverse channel.
dc.description8 pages, 7 figures, 1 table, final version, as published in Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/0808.2564
dc.identifierhttp://arxiv.org/abs/0808.2564
dc.identifierPhys.Rev.C79:015207,2009
dc.identifierdoi:10.1103/PhysRevC.79.015207
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220144
dc.subjectNuclear Theory
dc.titlePionic transparency in semi-exclusive electroproduction off nuclei
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