The energy dependence of the proton-proton total cross-section for centre-of-mass energies between 23 and 53 GeV

Measurements of proton-proton elastic scattering at angles around 6 mrad have been made at centre-of-mass energies of 23, 31, 45 and 53 Ge V using the CERN Intersecting Storage Rings. The absolute scale of the cross-section was established by determination of the effective density of the colliding beams in their overlap region. Proton-proton total cross sections were deduced by extrapolation of the elastic differential cross-section to the forward direction and by application of the optical theorem. The results indicate that over the energy range studied the proton-proton total cross-section increases from about 39 to about 43 mb. (12 refs)

Comparison of momentum spectra of secondary particles produced in 14.25, 19.2 and 24.0 GeV/c p-p collisions

Results are reported of charged particle yields in pp collisions at 14.25, 19.2, and 24.0 GeV/c for secondary momenta above 4 GeV/c and laboratory angles between 10 and 150 mrad. The cross-sections for the inclusive reactions involving the production of pi /sup +or-/, K/sup +or-/, and p/sup +or-/ are presented. The general features of the dependence of the data on transverse and longitudinal momentum, missing mass, and four- momentum transfer are discussed in the context of Feynman scaling and the approach to limiting distributions in the 10 to 30 GeV energy range. (45 refs)