Study of the energy dependence of the underlying event in proton-antiproton collisions
Study of the energy dependence of the underlying event in proton-antiproton collisions
We study charged particle production in proton-antiproton collisions at 300 GeV, 900 GeV, and 1.96 TeV. We use the direction of the charged particle with the largest transverse momentum in each event to define three regions of eta-phi space; toward, away, and transverse. The average number and the average scalar …