High Transverse Energy and High Transverse Momentum Events in Anti p p and pp Interactions at the CERN Intersecting Storage Rings

摘要

A comparison between anti p p and pp interactions at sqrt s = 52.7 GeV is presented for a total neutral transverse energy (E/sub T/ exp 0 ) trigger and for a high transverse momentum (p/sub T/) neutral cluster trigger. The rate of production of events in the range 6 < E/sub T/ exp 0 < 20 GeV is observed to be 10% higher in anti p p collisions than in pp collisions. A study of the structure of the events shows this excess to be due to more isotropic events being produced in anti p p collisions. The ratio of the production cross section for single neutral clusters in anti p p and pp interactions in the range 1.25 < p/sub T/ < 10 GeV/c does not significantly differ from unity. (ERA citation 10:052773)