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arXiv · 1311.7017

Phenomenology of $α_s$ at intermediate energy: the quark-hadron duality approach

A. Courtoy
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Abstract

In this contribution to the proceedings, we analyze the transition from perturbative and non- perturbative QCD embedded in the coupling constant. In the study of quark-hadron duality, we suggest that the realization of the latter is related to the inclusion of non-perturbative effects at the level of the coupling constant. The outcome of our analysis is a smooth transition from perturba- tive to non-pertuperturbative QCD physics, embodied in the running of the coupling constant at intermediate scales. While our approach is purely perturbative, we compare our result to various non-perturbative schemes.

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A. Courtoy. 2013-12-03. Phenomenology of $α_s$ at intermediate energy: the quark-hadron duality approach. https://arxiv.org/abs/1311.7017

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