[en] Four of the nineteen papers in these proceedings have already been processed for inclusion in the TIC data base, and can be located by reference to the CONF- number. The remaining fifteen will be announced when they are received from AIP

[en] This session was devoted to high energy leptonic interactions. Particular attention was given to e⁺e^- physics especially to the first results obtained at PETRA and recent discoveries in neutrino and muon interactions

[en] The headings of this review are: physics below 3 GeV cm energy, total cross sections and inclusive measurements above 3 GeV cm energy, charmonium, inclusive electron production, charmed particles and the heavy lepton tau. (WL)

[en] The relation between the cross section for e⁺e^- → hadrons and pp → e⁺e^- + hadrons is briefly discussed. The structure of these cross sections is described in detail and its implications pointed out. 8 refs

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[en] Present mass limits allow the possibility that squarks may be produced at future linear e⁺e^- colliders. In this talk the authors discuss the prospects for precision studies of squark masses at such a facility. Both direct and cascade decay scenarios are discussed. By exploiting the clean environment and polarizable beams of linear e⁺e^- colliders, they find that squark mass determinations at the level of a few GeV are possible for a number of regions in parameter space

[en] The dynamics of the poilarized e⁺e^- beam collisions at energies and luminosities typical for the next linear e^:+e^- collider VLEPP is discussed. It is demonstyrated that during their motion in the incident bunch fields the el;ectron and p[ositron spins, initially polarized in a particular direction, are subjected to the turning. Because of the fact such a value is comparable with the systematical and statistical errors expected for the experiments at future e⁺e^--colliders, this effect should be taken into account in experiments with polarized e⁺e^- bea,s

[en] A quick survey of the history of electron-positron colliding-beam physics is given. First, the main physical characteristics of storage rings are recalled and the kinematical and dynamical properties of e⁺e^- annihilation reactions are described. Then an account is made of the most important results obtained in particle physics with e⁺e^- colliding rings. With the first generation of machines at low energies, the precise study of the vector mesons and the form factors of pions and kaons was made. Then at intermediate energies came the astonishing result that the total cross-section was keeping much higher than previously expected. Last but not least, a new realm of physics was opened by the discovery of the new particles, of their decays to intermediate states, by the possible existence of heavy leptons and of charmed mesons

[en] A review is given of the existing evidence for the production of a pair of new heavy leptons in e⁺e^- annihilation. The new phenomenon has been detected in four different experiments. Data are in good agreement with the assumption, that a sequential heavy lepton of mass 1.9 +- .1 GeV/c² is produced in e⁺e^- collisions. (orig.)