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arXiv 1003.5792hep-ph
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η-η ' -胶球混合

eta - eta' - glueball mixing

Simon Kiesewetter, Vicente Vento

摘要:

我们重新讨论了MIT袋模型方案中赝标介子与胶球的混合。计算是在球腔近似下进行的,使用了两种不同的费米子传播子,腔和自由传播子。我们得到了一个非常小的概率混合的eta在0.04 -0.1%的水平和一个更大的eta'在4- 12%的水平。我们的结果不同于以前的计算在同一方案,但似乎同意与实验分析。我们讨论了我们的差异的起源,它源于我们的时间积分的处理。

英文摘要:

We have revisited glueball mixing with the pseudoscalar mesons in the MIT bag model scheme. The calculation has been performed in the spherical cavity approximation to the bag using two different fermion propagators, the cavity and the free propagators. We obtain a very small probability of mixing for the eta at the level of $0.04-0.1% and a bigger for the eta' at the level of 4-12%. Our results differ from previous calculations in the same scheme but seem to agree with the experimental analysis. We discuss the origin of our difference which stems from the treatment of our time integrations.

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