QCD Corrections to $Δρ$

A. Sirlin

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arXiv · hep-ph/9403282

QCD Corrections to $Δρ$

A. Sirlin

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Abstract

We discuss a simple method to evaluate the QCD corrections to $Δρ$. It assumes that the perturbative expansion in terms of $\ms$ parameters is meaningful and, unlike other studies, exploits significant available information concerning $\chass$ corrections. This approach leads to an enhancement of $\sim26\%$ relative to the conventional evaluation. QCD corrections to the $Z^0\to b\bar b$ amplitude are also considered. Implications for electroweak physics are briefly discussed.

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A. Sirlin. 1994-03-13. QCD Corrections to $Δρ$. https://arxiv.org/abs/hep-ph/9403282

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