Analysis of e+e- Charged-Particle Inclusive Cross Section Including the Higher-Order Correction of Quantum Chromodynamics

The new data on charged-particle inclusive cross sections obtained by the TASSO and MARK II detectors in the e⁺e^- annihilation process are analyzed in the framework of perturbative QCD. In the leading logarithmic order there results Λ=0.9-1.5 GeV for the scale parameter, but this reduces to Λ=0.4-0.6 GeV if the higher-order correction in the MS― scheme is included. The obtained value of Λ_MS― is slightly larger than but still consistent with that determined from the data of deep-inelastic electron and neutrino scatterings.