On the structure of large N cancellations in baryon chiral perturbation theory

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dc.creatorFlores-Mendieta, Ruben
dc.creatorHofmann, Christoph P.
dc.creatorJenkins, Elizabeth
dc.creatorManohar, Aneesh V.
dc.date2000-01-20
dc.date.accessioned2026-07-07T10:32:35Z
dc.date.available2026-07-07T10:32:35Z
dc.descriptionWe show how to compute loop graphs in heavy baryon chiral perturbation theory including the full functional dependence on the ratio of the Delta--nucleon mass difference to the pion mass, while at the same time automatically incorporating the 1/N cancellations that follow from the large-N spin-flavor symmetry of baryons in QCD. The one-loop renormalization of the baryon axial vector current is studied to demonstrate the procedure. A new cancellation is identified in the one-loop contribution to the baryon axial vector current. We show that loop corrections to the axial vector currents are exceptionally sensitive to deviations of the ratios of baryon-pion axial couplings from SU(6) values.
dc.identifierhttps://arxiv.org/abs/hep-ph/0001218
dc.identifierhttp://arxiv.org/abs/hep-ph/0001218
dc.identifierPhys.Rev.D62:034001,2000
dc.identifierdoi:10.1103/PhysRevD.62.034001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178805
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleOn the structure of large N cancellations in baryon chiral perturbation theory
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