Nuclear parton distributions are studied in a parton model with rescaling and recombination mechanisms. Parton x distributions are first calculated at Q 2 =1 GeV 2 by the model, and they are evolved to larger Q 2 in order to be compared with various F 2 data. The experimental shadowing is explained by the parton-recombination effects. Then, the modification of sea-quark and gluon distributions ...

To study heavy ion collisions at energies to be available from the Relativistic Heavy Ion Collider (RHIC), we have developed a transport model that includes both initial partonic and final hadronic interactions. Specifically, the parton cascade model ZPC, which uses as input the parton distribution from the HIJING model, is extended to include the quark-gluon to hadronic matter transition and a...