MULTIPLICITY DISTRIBUTIONS IN A THERMODYNAMICAL MODEL OF HADRON-PRODUCTION IN E(-) COLLISIONS()E()

Predictions of a thermodynamical model of hadron production for multip licity distributions in e(+)e(-) annihilations at LEP and PEP-PETRA ce ntre of mass energies are shown. The production process is described a s a two-step process in which primary hadrons emitted from the thermal source decay into final observable particles. The final char ed track s multiplicity distributions turn out to be of Negative Binomial type and are in quite good agreement with experimental observations. The av erage number of clans calculated from fitted Negative Binomial coincid es with the average number of primary hadrons predicted by the thermod ynamical model, suggesting that clans should be identified with primar y hadrons.