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



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Geng, L. S. and Oset, E and Peláez Sagredo, José Ramón and Roca, L. (2009) Nature of the axial-vector mesons from their N_c behavior within the chiral unitary approach. European physical journal A, 39 (1). pp. 81-87. ISSN 1434-6001

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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 qq̅ mesons.

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L. S. Geng thanks the Ministerio de Educacion y Ciencia in the Program of estancias de doctores y tecnologos extranjeros for finantial support. This work is partly supported by DGICYT contracts FPA2007-29115-E, FIS2006-03438, FPA2005- 02327 and FPA2007- 62777, Santander/Complutense contract PR27/05-13955- BSCH, the Fundación Séneca contract 02975/PI/05, the Generalitat Valenciana and the EU Integrated Infrastructure Initiative Hadron Physics Project under contract RII3-CT-2004-506078.

Uncontrolled Keywords:Perturbation-theory; Phenomenological lagrangians; One-loop; Resonances; Scattering; Symmetry; Dynamics; Unitarization; Amplitude
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Mathematical physics
ID Code:35185
Deposited On:22 Jan 2016 17:44
Last Modified:05 Apr 2022 07:53

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