No abstract available

[en] An overview of the challenges to be faced in the area of the strong interactions during the 1990's is presented. As an illustrative example special attention is given to the analysis of jets as studied at hadron colliders

[en] The possible role of gluons in hadronic processes as suggested by the quark-parton model and QCD is discussed and evaluated. Attention is focused on heavy (e.g., charmed) hadron production, large p/sub T/ hadronic physics, and massive lepton pair production at large p/sub T/. A discussion of more rigorous tests of QCD and the role of gluons in e⁺e^- annihilation is also given. 55 references

[en] A brief summary is presented of the current status of jet studies in hadron-hadron collisions. The primary focus is on those issues that would benefit from comparisons of jet samples obtained from hadron-hadron collisions, from e⁺e^- annihilation events at LEP and from deep inelastic collisions at HERA. The important point is that, to perform this comparison properly, the jet various samples must be obtained using the same jet definition

[en] The historical development of large p/sub T/ physics is reviewed and a critical diagnosis of the difficulties confronting present understanding and existing models is given. The prognosis for future progress in this field is discussed. 58 references

[en] Recent progress in the utilization of perturbative quantum chromodynamics to study lepton-hadron and hadron-hadron reactions is reviewed. Interest is focused on the connections between the various results and the implications for the parton model as a phenomenological tool and as a vehicle to test quantum chromodynamics. 42 references

[en] Applications of the Standard Model to the description of physics at hadron colliders are discussed. Particular attention is paid to the use of jets to characterize this physics. The issue of identifying physics beyond the Standard Model is also discussed. 59 refs., 6 figs., 4 tabs

[en] The structure of perturbative quantum chromodynamics in kinematic regimes characterized by two large but very different mass scales is discussed. The various levels of approximation used to study these regimes are viewed. Of particular interest is the behavior for extremely different scales where the simplest approximation predicts a suppression. A more refined approximation suggests the absence of any suppression but it is argued that only a much more detailed analysis can supply a definitive answer to this issue

[en] The structure of perturbative Quantum Chromodynamics in kinematic regimes characterized by two large but very different mass scales is discussed. The status of the sequence of approximations employed to theoretically study these regimes is reviewed along with some discussion of the present phenomenology. Various important outstanding questions are noted. 22 references

[en] The concept of a jet of hadrons is defined and discussed in terms of its historical role in the study of hadronic and deep inelastic semileptonic processes. The implications of quantum chromodynamics (QCD) for the understanding of the structure of jets are discussed, and recent theoretical advances are reviewed in detail. Particular emphasis is placed on how the notion of a jet is best implemented in the context of the predictions available from perturbative QCD, both in terms of describing data and in terms of testing the theory. 53 references, 36 figures