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arXiv · hep-ph/0509188

The strong coupling constant at low Q^2

A. Deur
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Abstract

We extract an effective strong coupling constant using low-Q^2 data and sum rules. Its behavior is established over the full Q^2-range and is compared to calculations based on lattice QCD, Schwinger-Dyson equations and a quark model. Although the connection between all these quantities is not known yet, the results are surprisingly alike. Such a similitude may be related to quark-hadron duality.

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A. Deur. 2005-09-19. The strong coupling constant at low Q^2. https://doi.org/10.1142/9789812774132_0007

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