Antiproton—proton elastic scattering at from |t| = 0.034 to 0.65 (GeV/c)2

Abstract The differential cross section for elastic antiproton—proton scattering at s =1.8 TeV has been measured over the t range 0.034⩽|t|⩽0.65 (GeV/c)2. A logarithmic slope parameter, B, of 16.3±0.3 (GeV/c)−2 is obtained. In contrast to lower energy experiments, no change in slope is observed over this t range

Diffraction dissociation in pp collisions at √s=1.8 TeV

Abstract We have studied single diffraction dissociation ( p p→ p X ) in proton-antiproton collisions at √s=1.8TeV, covering the ranges 3⪅MX⪅200 GeV and 0.05⪅|t|⪅0.11 (GeV/c)2. Parameterizing the production to be of the form dσ ( d t d M 2 X ) = (M 2 X ) −α exp (bt) , we obtain α = 1.13±0.07 and b = 10.5±1.8(GeV/c)−2. The total single diffraction dissociation cross section is 2σSD=8.1±1.7 mb. Comparisons are made to previous lower energy data, and to an earlier measurement by us at the same energy