Glueball decay in holographic QCD
Glueball decay in holographic QCD
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DOI：
10.1103/physrevd.77.086001
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发表时间：
2007-09
影响因子：
5
通讯作者：
K. Hashimoto;C. Tan;S. Terashima
中科院分区：
文献类型：
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作者：
K. Hashimoto;C. Tan;S. Terashima
利用基于D_4-膜和D_8-反D_8-膜的全息QCD，我们计算了胶球与轻介子的耦合。我们描述胶球衰变明确计算其衰变宽度和分支比。有趣的是，虽然胶球在理论和实验上都没有得到很好的理解，但我们的结果与标量胶球候选者f{sub 0}（1500）的实验数据一致。更一般地说，全息QCD预言任何胶球衰变到4{pi}{sup 0}都被抑制，最轻的胶球与qq介子的混合很小。
Using holographic QCD based on D4-branes and D8-anti-D8-branes, we have computed couplings of glueballs to light mesons. We describe glueball decay by explicitly calculating its decay widths and branching ratios. Interestingly, while glueballs remain less well understood both theoretically and experimentally, our results are found to be consistent with the experimental data for the scalar glueball candidate f{sub 0}(1500). More generally, holographic QCD predicts that decay of any glueball to 4{pi}{sup 0} is suppressed, and that mixing of the lightest glueball with qq mesons is small.