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

W. Bernreuther
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Abstract

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

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W. Bernreuther. 1994-09-22. Threshold Effects on the QCD Coupling $α_{\overline{MS}}$. https://arxiv.org/abs/hep-ph/9409390

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