The Fifth Conference “ Nuclear Science and Its Application”, 14-17 October 200S
INVESTIGATION OF ANTIPROTON-PROTON INTERACTIONS AT
MOMENTA 22,4 GeV/c and 32 GeV/c
E.G.BOOS, M.IZBASAROV, N.S.POKROVSKY, V.V.SAMOYLOV, T.TEMIRALIEV. R.A.TURSUNOV, B.O.ZHAUTYKOV
Institute o f Physics and Technology, Kazakhstan, Almaty
The experimental material on pp -interactions was obtained during expositions of hydrogen bubble chambers “Lyudmila”( 22.4 GeV/c, ~65 000 events) and “Mirabelle’(32 GeV/c ,~200 000 events) by antiproton beams at Serpukhov accelerator.
The identification of secondary charged particles was performed by ionization and by the method of statistical identification. Such approach gives detailed coincidence of differential interaction cross sections for particles and antiparticles in mirror symmetric systems. The pp -annihilation cross section was estimated on the basis of mean per interaction number of protons and antiprotons obtained for every multiplicity.
The method for individual separation o f annihilation and non-annihilation events at high energies, based on the identification of particles and the analysis of missing mass, estimated on all charged particles, has been developed.
The individual division of interactions on annihilation and non-annihilation events has allowed to carry out the analysis of correlations o f produced particles differently for every of the named groups. In antiproton-proton annihilation the correlation of particles on quasi-rapidity is weaker than in non-annihilation pp -interactions.
Section II. Basic Problems O f Nuclear Physics
