Recent progress in pion photo- and electroproduction analysis

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dc.creatorTiator, L.
dc.creatorDrechsel, D.
dc.creatorKamalov, S.
dc.creatorYang, S. N.
dc.date2001-11-22
dc.date.accessioned2026-07-07T05:38:49Z
dc.date.available2026-07-07T05:38:49Z
dc.descriptionPion photo- and electroproduction has been studied at threshold and in the resonance region below W=2GeV. At threshold pi^0 production can be very well explained within a dynamical model derived from an effective chiral Lagrangian. The final state interaction is nearly saturated by single charge exchange rescattering. In the resonance region new electroproduction data at Q^2=1GeV^2 has been analyzed with MAID and longitudinal and transverse photon helicity amplitudes have been determined for different resonances. A detailed study of the E/M and S/M ratios of the N->Delta transition shows a zero crossing of REM near Q^2=4GeV^2, whereas the RSM becomes increasingly negative at large Q^2.
dc.description8 pages Latex, Proceedings of MENU2001
dc.identifierhttps://arxiv.org/abs/nucl-th/0111062
dc.identifierhttp://arxiv.org/abs/nucl-th/0111062
dc.identifierPiN Newslett. 16 (2002) 41-48
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/81749
dc.subjectNuclear Theory
dc.titleRecent progress in pion photo- and electroproduction analysis
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