Scalar Glueball in Radiative $J/\psi$ Decay on the Lattice
Scalar Glueball in Radiative $J/\psi$ Decay on the Lattice
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DOI：
10.1103/physrevlett.110.021601
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发表时间：
2012-06
影响因子：
8.6
通讯作者：
L. Gui;Ying Chen;Gang Li;Chuan Liu;Yu-bin Liu;Jian-ping Ma;Yi-Bo Yang;Jian-bo Zhang
中科院分区：
文献类型：
--
作者：
L. Gui;Ying Chen;Gang Li;Chuan Liu;Yu-bin Liu;Jian-ping Ma;Yi-Bo Yang;Jian-bo Zhang
研究了各向异性格点上淬火格点QCD中J/psi辐射衰变到标量胶球的形状因子。采用两种不同的晶格间距进行连续外推。利用这些形状因子的结果，J/psi辐射衰减到纯规范标量胶球的部分宽度被预测为0.35（8）keV，这对应于3.8（9）× 10（-3）的分支比。通过与实验的比较，我们的结果表明f（0）（1710）与纯规范胶球的重叠比其它相关的标量介子大。DOI：10.1103/PhysRevLett.110.021601
The form factors in the radiative decay of J/psi to a scalar glueball are studied within quenched lattice QCD on anisotropic lattices. The continuum extrapolation is carried out by using two different lattice spacings. With the results of these form factors, the partial width of J/psi radiatively decaying into the pure gauge scalar glueball is predicted to be 0.35(8) keV, which corresponds to a branching ratio of 3.8(9) x 10(-3). By comparing with experiments, out results indicate that f(0)(1710) has a larger overlap with the pure gauge glueball than other related scalar mesons. DOI: 10.1103/PhysRevLett.110.021601