Charge correlations in deep inelastic proton-proton interactions at the CERN ISR: the axial field spectrometer collaboration

The production of charged particles in pp collisions at √s = 63 GeV with an identified high p/sub T/ trigger particle emitted in the central region is studied. The measurements were performed at the CERN ISR using the Axial Field Spectrometer. The dependence of the ratio between positively and negatively charged particles on the identity, the transverse momentum and the rapidity of the trigger particle is investigated both in the system recoiling from the trigger particle and at small angles with respect to the trigger particle. The recoil system opposite to a positively charged trigger particle is nearly neutral, but shows a positive excess for negatively charged trigger particles. On the trigger side a charge compensating effect is seen, strongest for negatively charged trigger particles