Resonance f0 (1500): Is it a scalar glueball ?

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/\Psi \to \gamma\eta/\gamma\eta'

and

J/\Psi \to \gamma \phi \phi/\gamma \omega \omega

. The ratios of coupling constants

glueball\to\pi\pi,K\bar K, \eta\eta,\eta\eta'

which are calculated with this parameter coincide reasonably with those of

f_0(1500)

, supporting an idea about glueball nature of

f_0(1500)

.

Note:

LaTex, 8 pages, 2 .eps figures in one uuencoded file, uses epsfig

glueball: scalar
postulated particle: f0(1500)
glueball: hadronic decay
hadronic decay: glueball
pseudoscalar meson: pair production
pair production: pseudoscalar meson
symmetry breaking: flavor
J/psi(3100): radiative decay
radiative decay: J/psi(3100)
J/psi(3100): branching ratio

References(14)

Figures(0)

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