Non-perturbative expansion with massive quarks and e(sup +)e(sup -) annihilation at low energies

摘要

A non-perturbative expansion in QCD with massive quarks that is based on a new small expansion parameter is constructed. We calculate a non-perturbative (beta) function and discuss its behavior in connection with the static quark-antiquark potential. By using the 'smearing' method of Poggio, Quinn, and Weinberg, the process of e(sup +)e(sup -) annihilation into hadrons at low energies is analyzed. 22 refs., 4 figs. (Atomindex citation 27:023613)