Hidden gauge formalism for the radiative decays of axial-vector mesons

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dc.creatorNagahiro, H.
dc.creatorRoca, L.
dc.creatorHosaka, A.
dc.creatorOset, E.
dc.date2008-09-05
dc.date.accessioned2026-07-07T12:46:29Z
dc.date.available2026-07-07T12:46:29Z
dc.descriptionThe radiative decay of the axial-vector resonances into a pseudoscalar meson and a photon is studied using the vector meson Lagrangian obtained from the hidden gauge symmetry (HGS) formalism. The formalism is well suited to study this problem since it deals with pseudoscalar and vector mesons in a unified way, respecting chiral invariance. We show explicitly the gauge invariance of the set of diagrams that appear in the approach and evaluate the radiative decay width of the a1(1260) and b1(1235) axial vector meson resonances into pi gamma. We also include the contribution of loops involving anomalous couplings and compare the results to those obtained previously within another formalism.
dc.description24 pages, 6 tables, 11 figures
dc.identifierhttps://arxiv.org/abs/0809.0943
dc.identifierhttp://arxiv.org/abs/0809.0943
dc.identifierPhys.Rev.D79:014015,2009
dc.identifierdoi:10.1103/PhysRevD.79.014015
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221399
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHidden gauge formalism for the radiative decays of axial-vector mesons
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