The QCD analytic effective charge and its dependence on the pion mass
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The QCD analytic effective charge and its dependence on the pion mass

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The QCD analytic effective charge and its dependence on the pion mass

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Nesterenko, A.V.; Papavassiliou, Joannis
This document is a artículoDate2005

Este documento está disponible también en : http://hdl.handle.net/10550/43247
A new model for the QCD analytic running coupling, which incorporates the effects due to the π meson mass, is proposed. The properties of this invariant charge in spacelike and timelike regions are examined. Its main distinctive features are a finite infrared limiting value, which depends on the pion mass, and the 'plateau-like' behavior in the deep infrared domain of the timelike region.

    Nesterenko, A.V. Papavassiliou, Joannis 2005 The QCD analytic effective charge and its dependence on the pion mass International Journal of Modern Physics A 20 19 4622 4627
http://dx.doi.org/10.1142/S0217751X05028296

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