Nature of the axial-vector mesons from their Nc behavior within the chiral unitary approach

E. Oset; J.R. Pelaez; L.Roca; L. S. Geng

arxiv: 0811.1941 · v1 · submitted 2008-11-12 · ✦ hep-ph

Nature of the axial-vector mesons from their Nc behavior within the chiral unitary approach

L. S. Geng , E. Oset , J.R. Pelaez , L.Roca This is my paper

classification ✦ hep-ph

keywords mesonsapproachchiralunitaryvectorassociatedaxialaxial-vector

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By describing within the chiral unitary approach the s-wave interaction of the vector meson nonet with the octet of pseudoscalar Goldstone Bosons, we find that the main component of the axial vector mesons b_1(1235), h_1(1170), h_1(1380), a_1(1260), f_1(1285) and the two states associated to the K_1(1270) does not follow the QCD dependence on the number of colors for ordinary qqbar mesons.

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Nature of the axial-vector mesons from their Nc behavior within the chiral unitary approach

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