Behavior of the effective QCD couplingατ(s)at low scales
نویسندگان
چکیده
منابع مشابه
On the Behavior of the Effective QCD Coupling ατ(s) at Low Scales
The hadronic decays of the τ lepton can be used to determine the effective charge ατ (m 2 τ ′) for a hypothetical τ -lepton with mass in the range 0 < mτ ′ < mτ . This definition provides a fundamental definition of the QCD coupling at low mass scales. We study the behavior of ατ at low mass scales directly from first principles and without any renormalization-scheme dependence by looking at th...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2003
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.67.055008