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hep-ph2002★ 2 cited
Dispersion relations and Omnès representations for decay amplitudes
C. Bourrely, I. Caprini, L. Micu
We derive dispersion relations for decay, using the Lehmann-Symanzik-Zimmermann formalism, which allows the analytic continuation of the amplitudes with respect to the mom…
hep-ph2002★ 1 cited
Renormalization scheme dependence in the case of a QCD non-power perturbative expansion
Jan Fischer, Jiri Chyla, Irinel Caprini
A novel, non-power, expansion of QCD quantities replacing the standard perturbative expansion in powers of the renormalized couplant a has recently been introduced and examined by…