Correlations between Leading Protons and Large Transverse Momentum Particles and between Leading Protons and Massive Lepton Pairs in the Quark-parton Model*

Correlations between leading protons, produced in proton collisions and large pI particles and between leading protons and massive lepton pairs are studied using the quark parton model. The leading proton production is described according to a valence quark recombination mechanism, large pI jets are produced by the hard scattering of quark partons and lepton pairs are produced according to the Drell-Yan mechanism. The predictions of the quark recombination mechanism agree well with leading proton, neutron and A-hyperon distributions in low pi events. The predicted correlations between leading protons and large pI particles agree well with recent experimental data. Strong correlations are also predicted between leading protons and massive lepton pairs. The further experimental and theoretical study of such correlations is expected to contribute to the confirmation or exclusion of proposed production mechanisms. ( Submitted to Phys . Rev. D) Work supported by Department of Energy. t Permanent address: Sektion Physik, Karl-Marx-Universit% Leipzig, G. D. R.