Narrow width of a glueball decay into two mesons

Abstract

The widths of a glueball decay to two pions or kaons are analyzed in the pQCD framework. Our results show that the glueball ground state has small branching ratio for two-meson decay mode, which is around $10^{-2}$. The predicted values are consistent with the data of $\xi \to \pi \pi ,KK$ if $\xi$ particle is a $2^{++}$ glueball. Applicability of pQCD to the glueball decay and comparison with ${\chi }_{cJ}$ decay are also discussed.

12 pages, revtex, 2 ps figures

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Cited by in corpus (4)

• Mechanisms for ${\chi }_{cJ}\to \varphi \varphi$ Decays
• A coherent study of ${\chi }_{c0,2}\to VV$, $PP$ and $SS$
• A flux tube model for glueballs
• Kinematic Analysis Towards Glueballs