[en] Recent data on inclusive dilepton production are compared with the Drell-Yan model with colored quarks

No abstract available

[en] Some possible characteristics of the new quark suggested by the discovery of T(9.4) are surveyed. An inverse scattering approach to the interquark potential is summarized. 52 references

[en] The subject of hadron jet studies, to judge by the work presented at this workshop, is a maturing field which is still gathering steam. The very detailed work being done in lepton-lepton and lepton-hadron collisions, the second-generation measurements being carried out at Fermilab, the CERN SPS, and the ISR, and the very high energy hard scatterings being observed at the CERN Collider all show enormous promise for increased understanding. Perhaps we shall yet reach that long-sought nirvana in which high-p_{perpendicular} collisions become truly simple

[en] The results of a critical reading of papers presented are given. Included are hadronic production of new particles and leptons, charm, neutrino-induced production of charm, and psi spectroscopy

[en] I recall the development of quarkonium quantum mechanics after the discovery of Υ. I emphasize the empirical approach to determining the force between quarks from the properties of c anti c and b anti b bound states. I review the application of scaling laws, semiclassical methods, theorems and near-theorems, and inverse- scattering techniques. I look forward to the next quarkonium spectroscopy in the B_c system

[en] The author sketches some pressing questions in several active areas of particle physics and outline the challenges they present for the design and operation of detectors. His assignment at the 1999 ICFA Instrumentation School is to survey some current developments in particle physics, and to describe the kinds of experiments they would like to do in the near future and illustrate the demands their desires place on detectors and data analysis. Like any active science, particle physics is in a state of continual renewal. Many of the subjects that seem most fascinating and most promising today simply did not exist as recently as twenty-five years ago. Other topics that have preoccupied physicists for many years have been reshaped by recent discoveries and insights, and transformed by new techniques in accelerator science and detector technology. To provide some context for the courses and laboratories at this school, he has chosen three topics that are of high scientific interest, and that place very different demands on instrumental techniques. He hopes that you will begin to see the breadth of opportunities in particle physics, and that you will also look beyond the domain of particle physics for opportunities to apply the lessons you learn here in Istanbul

[en] Some recent results on high energy collisions are reviewed. Regularities of total and elastic cross sections are summarized in light of theoretical ideas. New indications of the structure of events with large transverse momentum particles receive brief attention. The general features of nondiffractive particle production are emphasized

[en] A brief discursive summary of the structure of events; and for particle interactions some unanswered questions are presented. (auth)

[en] Introductory remarks to Parallel Session C7 at the XXth International Conference on High Energy Physics are presented