Excited scalar mesons in a chiral quark model

Details Excited scalar mesons in a chiral quark model Excited scalar mesons in a chiral quark model

1999-04-05

arxiv.org/abs/hep-ph/9904226v2

Int.J.Mod.Phys. A14 (1999) 4621-4640

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 1 figure, minor misprints eradicated

Scientific paper

10.1142/S0217751X99002165

First radial excitations of the isoscalar and isovector scalar mesons f_0(400-1200), f_0(980) and a_0(980) are investigated in the framework of a nonlocal version of a chiral quark model of the Nambu--Jona-Lasinio type. It is shown that f_0(1370), f_J(1710) and a_0(1450) are the first radially excited states of f_0(400-1200), f_0(980) and a_0(980) which are ground states of the scalar meson nonet. The mesons' masses and strong decay widths are calculated. The scalar resonance f_0(1500) is supposed to be a glueball. The status of K_0^*(1430) is discussed.

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