The current picture of Glueballs

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 $\gamma \gamma$ 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 $\gamma \gamma$ production at LEP2.

Rapporteur talk at LEAP96, Dinkelsbuhl, Germany; 27-31 Aug 1996 (based on work with C.Amsler, with G.Farrar and Z.P.Li, and with M.Teper)

References in corpus (4)

• A comprehensive lattice study of SU(3) glueballs
• Numerical Evidence for the Observation of a Scalar Glueball
• EVIDENCE FOR A SCALAR GLUEBALL
• $\xi (2230)$ is likely to be a glueball

Cited by in corpus (9)

• The ρρinteraction in the hidden gauge formalism and the f_0(1370) and f_2(1270) resonances
• Future Prospects for Hadron Physics at PANDA
• Glueball-quarkonia content and decay of scalar-isoscalar mesons
• The $\gamma \gamma$ decay of the $f_0(1370)$ and $f_2(1270)$ resonances in the hidden gauge formalism
• Scalar Glueball Mixing and Decay
• Theoretical support for the $\pi (1300)$ and the recently claimed $f_0(1790)$ as molecular resonances
• Radiative open charm decay of the Y(3940), Z(3930), X(4160) resonances
• Di-Gluonium Sum Rules, I = 0 Scalar Mesons and Conformal Anomaly
• SU(3) Mixing for Excited Mesons