Jet Production in High-Energy Hadron - Proton Collisions

Abstract

We present experimental details from a study of hadron jet production at high transverse momentum (p±) in 130 and 200 GeV hadron-proton collisions. Jet definition and acceptance of the apparatus are discussed thoroughly. Jet cross sections are measured for p, ~r-, ~r + , K-, K + , and p incident on a liquid hydrogen target. These cross sections depend strongly on the number of valence quarks in the beam. The p± dependence of the jet cross section is measured to be significantly flatter than that for single particles. We show that a model based on quantum chromodynamics (QCD) is able to qualitatively explain both the large jet cross section and the event structure on the trigger and away sides. We present evidence for scale breaking; higher transverse momentum jets are seen to be composed of a greater number of lower momentum particles. The average momentum ((k±)) of these particles transverse to the jet direction is observed to increase with increasing jet p±. Charged particle correlations on both the trigger and away sides are given for both pion and proton beams.