Threshold Effects on the QCD Coupling $\alpha_{\overline{MS}}$

W. Bernreuther

Threshold Effects on the QCD Coupling $\alpha_{\overline{MS}}$

高能物理 - 唯象学 2007-05-23 v1

作者: W. Bernreuther

摘要

The matching condition which determines the effect of a heavy quark threshold on the running of the QCD coupling $\alpha_{\overline{MS}}$ is reviewed. The matching scale is arbitrary to some extent. However, this affects the value of $\alpha_{\overline{MS}}$ away from the threshold region only marginally.

关键词

qcd coupling constant quark masses atomic and molecular interactions

引用

@article{arxiv.hep-ph/9409390,
  title  = {Threshold Effects on the QCD Coupling $\alpha_{\overline{MS}}$},
  author = {W. Bernreuther},
  journal= {arXiv preprint arXiv:hep-ph/9409390},
  year   = {2007}
}

备注

7 pages, PITHA 94/31

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