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The current picture of Glueballs

Frank Close
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Abstract

Some recent developments in the phenomenology of the lightest scalar glueball are summarised. Tools for determining the gluonic content of a resonance of known mass, width and $J^{PC}$ from its branching fraction in radiative quarkonium decays and production cross section in $γγ$ collisions are presented. Two $q\bar{q} - G$ mixing schemes for $J^{PC} = 0^{++}$, inspired by the lattice, are shown to lead to similar phenomenology that may be tested at BEPC and in $γγ$ production at LEP2.

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Frank Close. 1996-10-21. The current picture of Glueballs. https://doi.org/10.1016/s0920-5632(97)00283-1

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