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Nesterenko, A.V.; Papavassiliou, Joannis | |||
Aquest document és un/a article, creat/da en: 2005 | |||
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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. | |||
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