K+-meson production inpBe interactions atTp=2.9 GeV

Authors :: Büscher, M.
Eßer, R.
Franzen, A.
v. Horn, L.
Kopyto, D.
Ohm, H.
Seyfarth, H.
Sistemich, K.
Müller, H.
Prietzschk, B.
Rimarzig, B.
Schneider, C.
Schneidereit, C.
Akindinov, A.
Chumakov, M.
Demechin, V.
Ergakov, V.
Gerasimov, A.
Goryachev, V.
Kiselev, Y.
Kostromin, V.
Sibirtsev, A. A.
Sopov, V.
Tchernyshev, V.
Kruglov, V.
Petrus, A.
Koptev, V.
Mikirtychyants, S.
Source :: Zeitschrift für Physik A Hadrons and Nuclei; December 1996, Vol. 355 Issue: 1 p93-100, 8p
Publication Year :: 1996
Abstract: The production ofK+andπ+mesons and protons inpBe collisions atTp=2.9 GeV has been studied at the ITEP proton synchrotron. Ejectiles with a momentum ofp=545 MeV/c were observed under an emission angle ϑ=17°. The detectors which have been developed for the identification of kaons out of a six orders of magnitude more intense background of pions and protons are described. A cross-section ratio d2σK+/dΩdp: d2σp/dΩdp: d2σp/dΩdpof (1±0.34):(85±1):(31±1) has been measured. Normalization with existing pion data yields an invariant differential cross sectionE·d3σK+/d3p=(3.1±1.2) mbGeV−2c3sr−1and a total cross section of σtot(pBe)=(3.7±1.5) mb. These cross sections are compared with existing data and theoretical predictions. TheAdependence ofK+production in the few-GeV range is analyzed.