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Radially excited axial-vector mesons in the extended Nambu–Jona-Lasinio model
https://doi.org/10.1142/S0217751X14501255Cited by:7 (Source: Crossref)
Abstract
The first radial excitations of axial-vector mesons are considered in the framework of the extended U(3) × U(3) Nambu–Jona-Lasinio model. We calculate the mass spectrum of a1, f1 and also strange axial-vector mesons. For description of radially excited states, we used the form factors of polynomial type of the second order in transverse quark momentum. For the ground- and excited-state mesons consisting of light quarks we have calculated the widths of a number of strong and radiative decays. We got satisfactory agreement with experimental data for the ground states. A set of predictions for the excited states of mesons is given.
Keywords:
PACS: 12.39.Fe, 13.20.Jf, 13.25.Jx
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