Abstract
The ratios of the 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 u, d d, s s ) in soft gluon-induced reactions goes on within universal symmetry breaking. The 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 → γη γη′ and J Ψ → γφφ γωω . The ratios of the coupling constants glueball → ππ, K K, ηη, ηη′ which are calculated with this parameter coincide reasonably with those of ƒ; 0(1500) , supporting the idea about the glueball nature of ƒ; 0(1500) .
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