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QCD Tests from Tau Decays

A. Pich
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Abstract

The total $τ$ hadronic width can be accurately calculated using analyticity and the operator product expansion. The theoretical analysis of this observable is updated to include all available perturbative and non-perturbative corrections. The experimental determination of $α_s(M_τ^2)$ and its actual uncertainties are discussed.

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A. Pich. 1997-01-16. QCD Tests from Tau Decays. https://arxiv.org/abs/hep-ph/9701305

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