Abstract :
It is shown that, as functions of thier rank, cumulants of QCD multiplicity distributions in small phase space bins possess quasi-oscillating behavior similar to that found for them in the total rapidity range. The first minimum moves to lower ranks for smaller bins. For the total rapidity range, it moves to higher ranks with increasing energy. The running property of the QCD coupling constant is in charge of these effects, which can be verified in experiment.
