Abstract

The scheme dependence of the perturbative QeD is investigated to find out the best convergence. Our criterion for the convergence is to require the magnitude of the residual term to be smaller than the statistical errors of the data. The criterion is applied to the deep inelastic lepton-nucleon scattering process. It is wellknown that the behavior of the perturbation expansion in the quantum chro­ modynamics (QeD) beyond the leading order depends critically on the choice of the re­ normalization scheme. I ),2) It is important to

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