abstract

We discuss in some simple cases — where mean-field or strong coupling methods for lattice gauge theories are applicable — the stabilizing role on first-order deconfining phase transitions played by the spontaneous breaking of chiral invariance for euclidean Kogut–Susskind fermions.

abstract

Recent developments in high \(p_{\rm T}\) hadron physics are reviewed. After a brief historical overview, the theoretical framework is sketched. The main emphasis of the paper is on new experimental results. These concern events with single hadrons and symmetric pairs of hadrons at large \(p_{\rm T}\), direct photons, and other highly inelastic events, defined as events with a large transverse energy in an extended solid angle. Measurements of the inclusive cross section for jet production are treated in some detail.

abstract

A number of novel features of QCD are reviewed, including the consequences of formation zone and color transparency phenomena in hadronic collisions, the use of automatic scale setting for perturbative predictions, null-zone phenomena as a fundamental test of gauge theory, and the relationship of intrinsic heavy colored particle Fock state components to new particle production. We conclude with a review of the applications of QCD to nuclear multiquark systems.