A THERMODYNAMICAL MODEL OF HADRON PRODUCTION IN e+e- COLLISIONS

摘要

The hadron production in e+e~ collisions is studied assuming that particles orig-inate in a hadron gas at thermal and chemical equilibrium. The parameters of the hadron gas are determined with a fit to the average multiplicities of various hadron species measured at LEP and PEP-PETRA colliders. An impressive agreement is found between the predictions of this model and data for almost all particles over a range of production rate of four orders of magnitude. The tem-perature values found at the centre of mass energies of LEP and PEP-PETRA are around 165 MeV.