Three and higher order rapidity distributions in pp collisions at 200 GeV/c

Three-particle rapidity distributions have been studied for different charged multiplicities in pp interactions at 200 GeV/c. Appropriately defined semi-inclusive three-particle correlations are found to be sufficiently small, leading us to conclude that the three-particle density can be expressed in terms of one- and two-particle densities. For events with more than four charged particles, a superposition approximation for the three-particle density holds surprisingly well. This approximation enables us to express all higher order rapidity distributions in terms of one- and two-particle distributions alone.