1. Moriond workshop on lepton pair production

The first Moriond Workshop was focused on the study of lepton pair production. This important process which has been studied ten years ago experimentally by L. LEDERMAN and his group and theoretically by S. DRELL and YAN Tung Mow gave rise to some of the most important discoveries of the last few years: the new particles, psi, UPSILON and perhaps others in the future. The aim of this workshop is to summarize the important results obtained in this field where the concepts of quarks and colour are most relevant and which provides crucial tests for the only available strong interaction theory: Quantum-Chromo-Dynamics (QCD). It is hoped that this confrontation of ideas in this important field of physics allows the experimentalists to prepare a new generation of experiments with the incoming machines in order to deepen our knowledge on the basic structure of matter