Resonamce Production in 77 Collisions

The first motivation1 for yq collisions was indeed the study of C = +l resonances. After the pioneer works listed in Ref. 1, one can trace back from the four preceeding 7~ workshops2-5 and other high energy physics conference8 how the subject developed since this time. The theoretical concern progressively evolved from kinematical considerations (properties of the eSe+ e+e-X processes) to dynamical ones, namely resonances, soft hadronic processes, current algebra constraints, sum rules, duality relations andmore recently hard (point-like) processes and QCD tests. Several phenomenological studies on the possible production of exotic particles (like technihadrons, Higgs bosons, supersymmetric particles, excited fermions, . ...) have also been made but this is outside the scope of our review.