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arXiv · hep-ph/9505219

EVIDENCE FOR A SCALAR GLUEBALL

Claude Amsler·Frank Close
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Abstract

We show that the newly discovered scalar meson $f_0(1500)$ at LEAR has properties compatible with the lightest scalar glueball predicted by lattice QCD and incompatible with a $\qqbar$ state. We suggest that decays of glueballs are into pairs of glueballs (including $η, η'$ or $(ππ)_S$) or by mixing with nearby $Q\bar{Q}$ states. The partial widths of $f_0(1500)$ are in accord with this hypothesis, tests of which include characteristic radiative decays to $γϕ,γω, γρ$ and the prediction of a further scalar state, $f_0'(1500 - 1800)$ which couples strongly to $K\bar{K}$, $ηη$ and $ηη'$.

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Claude Amsler, Frank Close. 1995-05-03. EVIDENCE FOR A SCALAR GLUEBALL. https://doi.org/10.1016/0370-2693(95)00579-a

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