Vector correlator in massless QCD at order $ \mathcal{O}\left( {\alpha_s^4} \right) $ and the QED β-function at five loop
Vector correlator in massless QCD at order $ \mathcal{O}\left( {\alpha_s^4} \right) $ and the QED β-function at five loop
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DOI：
10.1007/jhep07(2012)017
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发表时间：
2012-06
影响因子：
5.4
通讯作者：
P. Baikov;K. Chetyrkin;Johann H. Kuhn;J. Rittinger;Russian Federation.
中科院分区：
文献类型：
--
作者：
P. Baikov;K. Chetyrkin;Johann H. Kuhn;J. Rittinger;Russian Federation.
我们提出了一个简明扼要的总结最近的结果，矢量相关器在无质量QCD的顺序，所有的颜色因子被给定的一个通用的颜色组。作为直接结果，我们得到：（i）在和MOM方案中QCD对QED β函数的全部贡献;（ii）在和MOM方案中，对于一般数量的单电荷费米子，QED β函数的全部五圈结果。
We present a concise summary of recent results for the vector correlator in massless QCD at order, with all colour factors being given for a generic colour group. As a direct consequence we arrive at:(i) the full QCD contribution to the QED β-function of orderin theand MOM-schemes;(ii) the full five-loop result of order α 6 for the β-function of QED with a generic number of single-charged fermions, again for theand MOM-schemes.