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Browsing by Author "Cvetic G."

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Browsing by Author "Cvetic G."

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  • Cvetic G.; Kogerler R.; Valenzuela C. (2014-04-04)
    We construct models of analytic QCD (i.e. with the running coupling parameter free of Landau singularities) which address several problems encountered in previous analytic QCD models, among them their incompatibility with ...
  • Cvetic G.; Loewe M.; Martinez C.V.; Valenzuela C. (2014-04-04)
    We present a modification of the standard method of evaluating the semihadronic tau decay width. The method is based on a derivative expansion for the Adler function rather than the standard series in powers of the strong ...
  • Cvetic G.; Loewe M.; Martinez C.; Valenzuela C. (2014-04-04)
    The semihadronic tau decay width allows a clean extraction of the strong coupling constant at low energies. We present a modification of the standard "contour-improved" method based on a derivative expansion of the Adler ...
  • Cvetic G.; Kogerler R.; Valenzuela C. (2014-04-04)
    Analytic QCD models are those versions of QCD in which the running coupling parameter a(Q2) has the same analytic properties as the spacelike physical quantities, i.e., no singularities in the complex Q2 plane except on ...