Radial excitations of scalar and η, η' mesons in a chiral quark model

Details Radial excitations of scalar and η, η' mesons in a chiral quark model Radial excitations of scalar and η, η' mesons in a chiral quark model

1999-05-17

arxiv.org/abs/hep-ph/9905368v1

Phys.Atom.Nucl. 63 (2000) 1835-1846

Physics

High Energy Physics

High Energy Physics - Phenomenology

revtex, 26 pages, 2 figures

Scientific paper

10.1134/1.1320154

First radial excitations of the scalar meson nonet and pseudoscalar mesons \eta, \eta' are described in a nonlocal chiral quark model of the Nambu--Jona-Lasinio type with 't Hooft interaction. In this model simple form factors are used, which allows us to describe first radial excitations of the mesons and to conserve the gap equations describing spontaneous breaking of chiral symmetry in the standard form. The external parameters of form factors are fixed by masses of excited pseudoscalar mesons and the same form factors are used for predicting the masses of excited scalar mesons. Strong decays of excited scalar mesons and \eta, \eta' mesons are described in satisfactory agreement with experiment.

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