Hunting the Scalar Glueball: Prospects for BES III
The search for the ground state scalar glueball $$G_0$$ isreviewed. Spin zero glueballs will have unique dynamical properties ifthe $$$$ amplitude is suppressed by chiralsymmetry, as it is to all orders in perturbation theory: for instance,mixing of $$G_0$$ with $$\overline qq$$ mesons would be suppressed, radiative$$\jp$$ decay would be a filter for new physics in the spin zero channel,and the decay $$G_0 \rightarrow \overline KK$$ could be enhanced relativeto $$G_0 \rightarrow \pi \pi$$. These properties are consistent with theidentification of $$f_0(1710)$$ as the largely unmixed ground state scalarglueball, while recent BES data implies that $$f_0(1500)$$ does not containthe dominant glueball admixture. Three hypotheses are discussed: that$$G_0$$ is 1) predominantly $$f_0(1500)$$ or 2) predominantly $$f_0(1710)$$ or3) is strongly mixed between $$f_0(1500)$$ and $$f_0(1710)$$.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. High EnergyPhysics
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 918621
- Report Number(s):
- LBNL-61631; hep-ph/0609217; R&D Project: PTHOPS; BnR: KA1401020; TRN: US0805868
- Resource Relation:
- Journal Volume: 21; Journal Issue: 27; Conference: CHARM 2006, International Workshop on Tau-CharmPhysics, Beijing, China, June 5 - 7, 2006
- Country of Publication:
- United States
- Language:
- English
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