Scalar Mesons and Glueballs in a Chiral U(3)xU(3) Quark Model with 't Hooft Interaction

Bratislava; Dubna; M. K. Volkov (2); M. Nagy (1); Russia); Slovakia; (2) JINR; V. L. Yudichev (2) ((1) Institute of Physics

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Scalar Mesons and Glueballs in a Chiral U(3)xU(3) Quark Model with 't Hooft Interaction

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arxiv hep-ph/0003200 v4 pith:JYBDK4L2 submitted 2000-03-21 hep-ph

M. Nagy (1) , M. K. Volkov (2) , V. L. Yudichev (2) ((1) Institute of Physics , Bratislava , Slovakia; (2) JINR , Dubna , Russia) This is my paper

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keywords scalarglueballmesonschiraldescribedhooftinteractionisoscalar

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In a U(3)x U(3) quark chiral model of the Nambu-Jona-Lasinio type with the 't Hooft interaction, the ground scalar isoscalar mesons and a scalar glueball are described. The glueball (dilaton) is introduced into the effective meson Lagrangian written in a chirally symmetric form on the base of scale invariance. The singlet-octet mixing of scalar isoscalar mesons and their mixing with the glueball are taken into account. Mass spectra of the scalar mesons and glueball and their strong decays are described.

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