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The strong coupling constant at low Q^2 | A. Deur
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19 Sep 2005 | Subject: | hep-ph hep-ex nucl-ex | 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. | Source: | arXiv, hep-ph/0509188 | Services: | Forum | Review | PDF | Favorites |
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