GLUON PRODUCTION IN CURRENT-NUCLEUS AND NUCLEON-NUCLEUS COLLISIONS INA QUASI-CLASSICAL APPROXIMATION

We calculate gluon production in deep inelastic scattering of the curr ent j = -1/4 F-mu nu(a) F-mu nu(a) off a large nucleus and in nucleon- nucleus collisions. In a covariant gauge calculation the transverse mo mentum spectrum of the gluon is determined by the final state interact ions of the gluon with the nucleons in the nucleus. In a light-cone ga uge calculation final state interactions are absent and these effects come from the light-cone wavefunction of the nucleus. We work in an ap proximation which neglects QCD evolution of gluons in the nucleon, tha t is in a quasi-classical approximation. (C) 1998 Published by Elsevie r Science B.V.