Recent results on jet physics and tests of QCD [Quantum Chromodynamics] in e+e- annihilation

Experimental investigations to test specific predictions of Quantum Chromodynamics and to adjust the free parameters of the theory are reviewed. Determinations of the strong coupling constant, αs, in Υ-decays and in the continuum of e+e- annihilations are summarized and discussed. Studies on production rates of multijet hadronic final states in the center of mass energy range of 22 GeV to 93 GeV, including optimizations of both the scale parameter ΛMS and the renormalization scale μ2 in O(αs2) perturbative QCD, are presented. The status of experimental tests of the nonabelian nature of QCD is summarized. 48 refs., 9 figs., 4 tabs