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arXiv 1005.2473hep-lathep-ph
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用改进的交错费米子模拟测量地球质量

Glueball mass measurements from improved staggered fermion simulations

Christopher M. Richards, Alan C. Irving, Eric B. Gregory, Craig McNeile

摘要:

我们提出了第一个2+1味谱测量胶球状态使用高统计模拟与改进的交错费米子。我们发现一个光谱与标量,赝标和张量胶球态的猝灭测量一致。测量是使用5000配置在晶格间距为0.123 fm和π介子质量为280 MeV和3000配置在0.092 fm与π介子质量为360 MeV。我们看到了一些耦合到2 π介子态的证据。我们比较我们的结果与实验胶球候选光谱以及淬火胶球估计。

英文摘要:

We present the first 2+1 flavour spectrum measurements of glueball states using high statistics simulations with improved staggered fermions. We find a spectrum consistent with quenched measurements of scalar, pseudoscalar andtensor glueball states. The measurements were made using 5000 configurations at a lattice spacing of 0.123 fm and pion mass of 280 MeV and 3000 configurations at 0.092 fm with a pion mass of 360 MeV. We see some evidence of coupling to 2 pion states. We compare our results with the experimental glueball candidate spectrum as well as quenched glueball estimates.

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