<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Hyperon Production in Proton-Nucleus Collisions at 42 GeV Center of Mass Energy"^^ . "The subject of this thesis is a measurement of hyperon production ratios which is of special interest as a reference on Quark Gluon Plasma search. The data used in this analysis have been taken with a minimum bias trigger at the fixed target experiment HERA-B, which uses the 920 GeV proton beam of the HERA storage ring at DESY. $\\Lambda$, $\\Xi$ and $\\Omega$ hyperons produced in collisions using carbon and tungsten wires as targets were reconstructed. Hyperon ratios are presented for the rapidity range $-1.5 < y < 0.5$ (where they where measured), extrapolated to the whole phase space and to $y = 0$. The main results at $y = 0$ are $\\frac{\\overline{\\Lambda}}{\\Lambda} = 0.88 \\pm 0.07$ (error including systematic error) and $\\frac{\\overline{\\Xi}}{\\Xi} = 0.69 \\pm 0.12$ (statistical uncertainty only) for the carbon target. These values are compared to proton--nucleus and nucleus--nucleus data above and below HERA-B energies and are comparable with both. In the rapidity range $-1.5 < y < 0.5$ the ratio $\\frac{\\overline{\\Lambda}}{\\Lambda}$ is significantly different for the two target materials, whereas extrapolated to the whole phase space it is not. A possible explanation in terms of multiple scatterings in the nucleus is given. The distribution of the $\\Lambda$ particle--anti-particle asymmetry versus Feynman's scaling variable $x_f$ using the carbon target is found to be in good agreement with measurements from pion--nucleus reactions at 500 GeV $\\pi$-beam energy."^^ . "2003" . . . . . . . . "Markward"^^ . "Britsch"^^ . "Markward Britsch"^^ . . . . . . "Hyperon Production in Proton-Nucleus Collisions at 42 GeV Center of Mass Energy (PDF)"^^ . . . "diplom.pdf"^^ . . . "Hyperon Production in Proton-Nucleus Collisions at 42 GeV Center of Mass Energy (Other)"^^ . . . . . . "small.jpg"^^ . . . "Hyperon Production in Proton-Nucleus Collisions at 42 GeV Center of Mass Energy (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Hyperon Production in Proton-Nucleus Collisions at 42 GeV Center of Mass Energy (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Hyperon Production in Proton-Nucleus Collisions at 42 GeV Center of Mass Energy (Other)"^^ . . . . . . "lightbox.jpg"^^ . . "HTML Summary of #3584 \n\nHyperon Production in Proton-Nucleus Collisions at 42 GeV Center of Mass Energy\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .