DESCRIPTION OF INCLUSIVE MESON SPECTRA IN E(-) ANNIHILATION REACTIONSBY A QUARK CASCADE MODEL()E()

We present a model to describe inclusive meson production in e(+)e(-) reactions based on a quark cascade approach whose formulation is put i n terms of diffusion equations for three quark flavors (u, d, s). Thes e equations are solved by using a formalism previously developed for t he problem of the electromagnetic cascade generated in the atmosphere by cosmic-ray interactions. The obtained solutions are given in terms of a combination of power-law functions whose profiles are adequate to describe the characteristics observed in the inclusive spectrum of me sons.