Hunting the Scalar Glueball: Prospects for BES III

Details Hunting the Scalar Glueball: Prospects for BES III Hunting the Scalar Glueball: Prospects for BES III

2006-09-20

arxiv.org/abs/hep-ph/0609217v1

Int.J.Mod.Phys. A21 (2006) 5535-5542

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, talk presented at CHARM 2006, Beijing IHEP, June 5-7, 2006, to be published in the proceedings

Scientific paper

10.1142/S0217751X06034719

The search for the ground state scalar glueball G_0 is reviewed. Spin zero glueballs will have unique dynamical properties if the amplitude is suppressed by chiral symmetry, as it is to all orders in perturbation theory: for instance, mixing of G_0 with \bar qq mesons would be suppressed, radiative J/psi decay would be a filter for new physics in the spin zero channel, and the decay G_0 \to \bar KK could be enhanced relative to G_0 \to \pi \pi. These properties are consistent with the identification of f_0(1710) as the largely unmixed ground state scalar glueball, while recent BES data implies that f_0(1500) does not contain the dominant glueball admixture. Three hypotheses are discussed: that G_0 is 1) predominantly f_0(1500) or 2) predominantly f_0(1710) or 3) is strongly mixed between f_0(1500) and f_0(1710).

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