Analytic Model for the QCD Running Coupling with Universalα¯s(0)Value
نویسندگان
چکیده
منابع مشابه
On the Analytic “Causal” Model for the QCD Running Coupling
We discuss the model ᾱan(Q ) recently proposed for the QCD running coupling ᾱs(Q ) in the Euclidean domain on the basis of the “asymptotic–freedom” expression and on causality condition in the form of the Q-analyticity. The model contains no adjustable parameters and obeys the important features: (i) Finite ghost-free behavior in the “low Q” region and correspondence with the standard RG-summed...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1997
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.79.1209