Scalar-Meson - Baryon Coupling Constants in QCD Sum Rules

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dc.creatorErkol, G.
dc.creatorOka, M.
dc.creatorRijken, Th. A.
dc.creatorTimmermans, R. G. E.
dc.date2006-03-23
dc.date.accessioned2026-07-07T10:46:57Z
dc.date.available2026-07-07T10:46:57Z
dc.descriptionThe external-field QCD Sum Rules method is used to evaluate the coupling constants of the light-isoscalar scalar meson (``σ'' or ε) to the Λ, Σ, and Ξbaryons. It is shown that these coupling constants as calculated from QCD Sum Rules are consistent with SU(3)-flavor relations, which leads to a determination of the F/(F+D) ratio of the scalar octet assuming ideal mixing: we find α_s \equiv F/(F+D)=0.55. The coupling constants with SU(3) breaking effects are also discussed.
dc.description15 pages, 8 figures, to be published in Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/nucl-th/0603058
dc.identifierhttp://arxiv.org/abs/nucl-th/0603058
dc.identifierPhys.Rev.C73:044009,2006
dc.identifierdoi:10.1103/PhysRevC.73.044009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/183409
dc.subjectNuclear Theory
dc.titleScalar-Meson - Baryon Coupling Constants in QCD Sum Rules
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