Scalar mesons nonet in a scaled effective Lagrangian

Details Scalar mesons nonet in a scaled effective Lagrangian Scalar mesons nonet in a scaled effective Lagrangian

1997-01-20

arxiv.org/abs/nucl-th/9701038v1

Physics

Nuclear Physics

Nuclear Theory

12 pages, Latex, use elsart.sty

Scientific paper

A scaled SU(3) Nambu - Jona-Lasinio Lagrangian is used to compute the mass of the nine scalar mesons in the vacuum and the mass of the gluball. It is shown that a suitable choice of the vacuum gluon condensate allows to reproduce the experimental masses of the scalar mesons except for the {$K^*_{0}$}(1430). This choice corresponds to a weak coupling between the gluon and quark condensates, giving a {$f_{0}$}(1500) or a {$f_{J}$}(1710) which is nearly a pure glueball.

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