DENSITY, CHARGE AND TRANSVERSE-MOMENTUM CORRELATIONS OF PARTICLES IN NON-DIFFRACTIVE PROTON-PROTON COLLISIONS AT SQUARE-ROOT-S=52.5GEV

Inelastic events with an observed charged multiplicity nobs ≥ 7 have been studied at the CERN ISR using the split field magnet detector. Correlations of particle densities, charges and transverse momenta have been determined and a phenomenological analysis in the framework of cluster models has been performed. A good description of all results is obtained if one allows for charged clusters, produced in a mechanism with limited charge exchange. The mean transverse momentum of clusters is 0.65 ± 0.10 GeV/c. Short-range correlations of particles of like charge due to the Bose-Einstein effect can be described as a second-order interferrence phenomenon with a radius R = 1.34 ± 0.31 fm and a lifetime of cτ = 1.38 ± 0.60 fm for the pion source. © 1979.