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arXiv · 1403.1360

Radially Excited Axial-Vector Mesons in the extended Nambu--Jona-Lasinio model

A. V. Vishneva·M. K. Volkov
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Abstract

The first radial excitations of axial-vector mesons are considered in the framework of the extended $U(3)\times U(3)$ Nambu--Jona-Lasinio model. We calculate the mass spectrum of $a_1$, $f_1$, 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 the 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.

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A. V. Vishneva, M. K. Volkov. 2014-03-06. Radially Excited Axial-Vector Mesons in the extended Nambu--Jona-Lasinio model. https://doi.org/10.1142/s0217751x14501255

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