pi N --> Multi-pi N Scattering in the 1/N_c Expansion

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dc.creatorKwee, Herry J.
dc.creatorLebed, Richard F.
dc.date2006-11-02
dc.date2007-02-02
dc.date.accessioned2026-07-07T11:02:06Z
dc.date.available2026-07-07T11:02:06Z
dc.descriptionWe extend the 1/N_c expansion meson-baryon scattering formalism to cases in which the final state contains more than two particles. We first show that the leading-order large N_c processes proceed through resonant intermediate states (e.g., rho N or pi Delta). We then tabulate linear amplitude expressions for relevant processes and find that the pole structure of baryon resonances can be uniquely identified by their (non)appearance in eta N or mixed partial-wave pi Delta final states. We also show that quantitative predictions of pi N to pi Delta branching ratios predicted at leading order alone do not agree with measurements, but the inclusion of 1/N_c corrections is ample to explain the discrepancies.
dc.description23 pages, 3 eps figures, ReVTeX4, added reference and discussion, identical to PRD version
dc.identifierhttps://arxiv.org/abs/hep-ph/0611035
dc.identifierhttp://arxiv.org/abs/hep-ph/0611035
dc.identifierPhys.Rev.D75:016002,2007
dc.identifierdoi:10.1103/PhysRevD.75.016002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188146
dc.subjectHigh Energy Physics - Phenomenology
dc.titlepi N --> Multi-pi N Scattering in the 1/N_c Expansion
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