Resonance $f_0(1500)$: Is it a scalar glueball ?

Abstract

The ratios of partial widths for the decay of a glueball into two pseudoscalar mesons are calculated under the assumption that the production of light quark pairs ($u\bar u,d\bar d,s\bar s$) in soft gluon-\-induced reactions goes on within universal symmetry breaking. Parameter of the violation of flavour symmetry is fixed by the central hadron production data in high energy hadron collisions and/or by the ratios of radiative decay amplitudes $J/Ψ\to γη/γη'$ and $J/Ψ\to γϕϕ/γωω$. The ratios of coupling constants $glueball\toππ,K\bar K, ηη,ηη'$ which are calculated with this parameter coincide reasonably with those of $f_0(1500)$, supporting an idea about glueball nature of $f_0(1500)$.