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 the ITEP-OPE philosophy (due to UV power terms) and too low values of the semihadronic τ decay ratio. The starting point of the approach is the construction of appropriate nonperturbative beta functions. © 2010 IOP Publishing Ltd.
|Journal||Journal of Physics G: Nuclear and Particle Physics|
|Publication status||Published - 9 Jun 2010|
Cvetič, G., Kögerler, R., & Valenzuela, C. (2010). Analytic QCD coupling with no power terms in the UV regime. Journal of Physics G: Nuclear and Particle Physics. https://doi.org/10.1088/0954-3899/37/7/075001