Hidden scale dependence in renormalon
نویسنده
چکیده
In the framework of renormalon consideration, a role of the anomalous dependence of gluon propagator on the scale µ is shown for a large number of quark flavours as well as in the nonabelian theory, where the parameter of the " running " coupling constant evolution has a hidden dependence on the scale. A phenomenological matching between the modified renormalon and the static quark potential is described to fix the renormalon scales.
منابع مشابه
Modified Renormalon
In the framework of renormalon consideration in the approximation of a large number of quark flavours, a role of the anomalous dependence of gluon propagator on the scale µ is shown. In the QCD perturbation theory, an account for the next-to-leading order term over α s is connected with the uncertainty, caused by a choice of the energy scale, determining the α s (µ 2) value, since the transitio...
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تاریخ انتشار 1995