Spectrality, coupling constant analyticity and the renormalization group

Details Spectrality, coupling constant analyticity and the renormalization group Spectrality, coupling constant analyticity and the renormalization group

2001-04-21

arxiv.org/abs/hep-ph/0104213v1

Phys.Atom.Nucl. 66 (2003) 724-736; Yad.Fiz. 66 (2003) 754-767

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, Latex

Scientific paper

Analytic structure in the strong coupling constant that emerges for some observables in QCD after duality averaging of renormalization group improved amplitudes is discussed. It is shown that perturbation theory calculations are justified for the proper observables related to the two-point correlators of hadronic currents the analytic properties of which are well-established. A particular case of gluonic current correlators is discussed in detail.

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