Strong Coupling Constant from $τ$ Decay within a Dispersive Approach to Perturbative QCD

Details Strong Coupling Constant from $τ$ Decay within a Dispersive Approach to Perturbative QCD Strong Coupling Constant from $τ$ Decay within a Dispersive Approach to Perturbative QCD

2011-12-27

arxiv.org/abs/1112.5958v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages,1 postscript fig. 6 Tables, Talk presented at the international conference "Continuum mechanics and related problems

Scientific paper

We present a new dispersive framework for the extraction of the strong coupling constant $\alpha_s$ from $\tau$-lepton decays. A new feature of our procedure is the use of the quark-hadron duality on the limited region $s_{\rm d}

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