AN ANALYTIC METHOD OF DESCRIBING R-RELATED QUANTITIES IN QCD
نویسندگان
چکیده
منابع مشابه
An analytic method of describing R-related quantities in QCD
Abstract Amodel based on the analytic approach to QCD, involving a summation of threshold singularities and taking into account the nonperturbative character of the light quark masses, is applied to find hadronic contributions to different physical quantities. It is shown that the suggested model allows us to describe well such objects as the hadronic contribution to the anomalous magnetic mome...
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15 صفحه اولNonperturbative contributions in an analytic running coupling of QCD
In the framework of analytic approach to QCD the nonperturbative contributions in running coupling of strong interaction up to 4-loop order are obtained in an explicit form. For all Q > Λ they are shown to be represented in the form of an expansion in inverse powers of Euclidean momentum squared. The expansion coefficients are calculated for different numbers of active quark flavors nf and for ...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2006
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732306020767