Possible Intrusion of a Glueball-Configuration in The Scalar-Isoscalar Meson Spectrum

We determine the hadronic two-body decay modes of the scalar-isoscalar f0(1370), f0(1500) and f0(1710) states as resulting from the mixture of the lowest lying scalar glueball with the isoscalar states of the ground state 3P0 quark-antiquark (Q,(dash)Q) nonet. In addition we study the production properties of the f0 states in proton-antiproton (p(anti)p) annihilation reactions of the type p(anti)p→π0f0. The quantitative predictions both for the decay and the production emphasize the role of the gluonic components in the f0 states and its observable consequences. (author)