Behavior of semi-inclusive sphericity distributions and a two-component uncorrelated cascade model

A simple two component uncorrelated cascade model is proposed which reproduces the semi-inclusive Sphericity distributions observed in lowp T hadron-hadron collisions. It is pointed out that if α is an exponential parameter inserted into the quark-quark structure function, theS dependence of the semi-inclusive sphericity distribution for multiplicityn goes as exp (−α/nS). This conclusion agrees extremely well with the experimental data.