ltra-relativistic (;This thesis contains three parts. In the first, the results of pp, ;In the second part of the thesis, a model is presented for estimating the multiplicity accompanying the production of jets, W and Z bosons, and other processes, using impact parameter correlations. We show how the background multiplicity in such events can possibly be used to learn about the spatial distribution of the constituents involved in the interaction. Detailed comparison of model predictions are made with recent data on prompt positron production.;The variation of... |