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Chiral Suppression and SU(3) Symmetry in Scalar Glueball Decays |
| JIN Hong-Ying1;LIU Shao-Min1;ZHANG Zhu-Feng1;LI Xue-Qian2 |
| 1Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 3100272Department of Physics, Nankai University, Tianjin 300071 |
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| Cite this article: |
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JIN Hong-Ying, LIU Shao-Min, ZHANG Zhu-Feng et al 2008 Chin. Phys. Lett. 25 1609-1612 |
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Abstract We theoretically evaluate the decay rates of a scalar glueball up to the order O(αs), where only two Feynman diagrams contribute and a special attention is paid on possible flavour SU(3) symmetry breaking in the process. It is
concluded that the SU(3) flavour symmetry may be respected in any case. However, due to chiral suppression in G0→qq, Γ(G0→qq qq) very likely is larger than Γ(G0→qq). These results are supported by the experimental data on the decays of χc0(1P) (0++). Based on this result, we propose a criterion to identify the scalar glueball.
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| Keywords:
12.38.Lg
12.39.Mk
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Received: 11 February 2008
Published: 29 April 2008
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| PACS: |
12.38.Lg
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(Other nonperturbative calculations)
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12.39.Mk
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(Glueball and nonstandard multi-quark/gluon states)
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