An Effective Approach to VMD at One Loop Order and the Departures from Ideal Mixing for Vector Mesons

Simple item page
dc.creatorBenayoun, M.
dc.creatorDelBuono, L.
dc.creatorLeruste, Ph.
dc.creatorO'Connell, H. B.
dc.date2000-04-04
dc.date2000-09-13
dc.date.accessioned2026-07-07T12:26:48Z
dc.date.available2026-07-07T12:26:48Z
dc.descriptionWe examine the mechanisms producing departures from ideal mixing for vector mesons within the context of the Hidden Local Symmetry (HLS) model. We show that kaon loop transitions between the ideal combinations of the $ω$ and $ϕ$ mesons necessitate a field transformation in order to get the mass eigenstates. It is shown that this transformation is close to a rotation for processes involving, like meson decays, on--shell $ω$ and $ϕ$ mesons. The HLS model predicts a momentum dependent, slowly varying mixing angle between the ideal states. We examine numerically the consequences of this for radiative and leptonic decays of light mesons. The mean $ω-ϕ$ mixing angle is found smaller than its ideal value; this is exhibited separately in radiative and in leptonic decays. Effects of nonet symmetry breaking in the vector sector are compared to those produced by the field rotation implied by the HLS model.
dc.description34 pages, references added, to appear in EPJC
dc.identifierhttps://arxiv.org/abs/nucl-th/0004005
dc.identifierhttp://arxiv.org/abs/nucl-th/0004005
dc.identifierEur.Phys.J.C17:303-321,2000
dc.identifierdoi:10.1007/s100520000463
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214997
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAn Effective Approach to VMD at One Loop Order and the Departures from Ideal Mixing for Vector Mesons
dc.typetext

Files

Collections

arXiv