[en] A review is given of results on π^-p interactions using the Omega Spectrometer is presented. Mass distributions and cross sections are mainly considered. 14 references

[en] 12 years of LEP/SLC physics have brought outstanding achievements. The LEP1 era allowed to record 17 million Z0 from which most accurate tests of the Standard Model have been performed. The SLD experiment at SLC collider has measured the Z0 spin asymmetry, A_lr, considered as the queen of all electroweak observables. At LEP200 a careful exploration of all topologies and several accurate measurements have been performed up to a center-of-mass energy of 206 GeV, thanks to a tour de force of LEP machine physicists. These results will only be summarized here. Before coming to them I will give a quick survey of the LEP history which will stay as a model of correct anticipation and planification. Besides the main stream, a lot of thoughts and work were devoted to some aspects of the LEP programme, which, because of the priorities chosen, were not finally pursued. (Author)

[en] This chapter studies the production of heavy flavors of neutrinos, photons, and hadrons by using bump hunting, prompt leptons from semileptonic decays, and seeing short-lived particles. Topics covered include photoproduction, hadroproduction at CERN SPS and Fermilab energies, charm at the ISR, and beauty at the ISR. The purpose of an examination of photon and hadron production of open flavors is to gain information on the production mechanism of heavy quarks, on the internal structure of the particles involved in the collision, and on the spectroscopy of heavy flavors

[en] To go beyond the LEP 1 program, one can: (1) increase the c.m. energy, (2) increase the luminosity, an option technically related to the previous one, (3) increase the sensitivity to possible deviations from the Standard Model by polarizing the beams. These upgrades open many possibilities of physics concerning accurate measurements as well as searches for new effects. They also require from the theoretical and experimental points of view several improvements and changes. These various topics and their relationship are reviewed and discussed

[en] To go beyond the LEP 1 program, one can (1) increase the c.m. energy; (2) increase the luminosity, an option technically related to the previous one; (3) increase the sensitivity to possible deviations from the Standard Model by polarizing the beams. These upgrades open up the way to many possibilities for physics concerning accurate measurements as well as searches for the new effects. They also require, from the theoretical and experimental points of view, several improvements and changes. These various topics and their interrelatedness are reviewed and discussed

[en] The aim of the paper is to present a short review of programs, completed at LEP1 and ongoing at LEP200. In particular the standard model tests, heavy-quark observables, effective electroweak mixing, heavy-flavor and beauty experiments at LEP1 are described. At LEP200 are proposed the following experiments: W-pairs investigations, Higgs physics, SUSY Higgs

No abstract available

[en] Results on real photon hard scattering from the NA14 experiment are described and compared to theoretical expectations

[en] The goal of this review is not to make one more celebration of the accuracy of LEP results, but rather to put them in a broader perspective. This set of measurements are compared with what they could and should be in the future if the various options available at LEP are exploited properly, and show that much is left to be done. Then various classes of non-LEP results are discussed which are already remarkable and still prone to improvements, which bring complementary information on the Standard Model, by probing it in widely different domains of applicability. (author) 46 refs.; 29 figs.; 12 tabs

[en] This is a short summary of LEP results and prospects concerning the tests of the electroweak Standard Model, direct searches for new particles or phenomena and studies of various fermion-antifermion final states produced in the Z⁰ decay. 35 refs, 8 figs, tabs