0 North-Holland Publishing Company QUANTUM CHROMODYNAMICS AND JETS IN e+e-

We discuss implications of perturbative QCD for the structure of jets in e+e- annihi-lation above 10 GeV cm. energy. (i) A strong asymmetry in the transverse momentum distribution in e+e--+ 2 jets originates from lowest order gluon bremsstrahlung; one jet broadens and the other does not. (ii) Since the gluon is flavor neutral, quantum number correlations between the hadrons in the two jets are smaller than predicted by the par-ton model. (iii) Jet distributions in QCD are compared with scalar gluon theories. (iv) Three-jet structure begins to emerge around lo-15 GeV cm. energy. It should be clearly visible in low-thrust or high-sphericity data at Kc,,. = 30 GeV. 1