Target dependence of central rapidity Λ production in sulfur-nucleus collisions at 200 GeV/ c per nucleon
1992; American Institute of Physics; Volume: 46; Issue: 2 Linguagem: Inglês
10.1103/physrevc.46.727
ISSN1538-4497
AutoresE. Andersen, P. D. Barnes, R. Blaes, H. M. Braun, J.-M. Brom, B. Castaño, M. Cherney, M D Cohler, B. De La Cruz, G. Diebold, Christian Fernandéz, G. Franklin, C. Garabatos, J. A. Garzón, W. Geist, D. Greiner, C. Gruhn, M. Hafidouni, J. Hrubec, D. Huss, J.L. Jacquot, Peter G. Jones, J.P.M. Kuipers, M. Ladrem, P. Ladrón de Guevara, D. Liko, S. Lopez-Ponte, G. Løvhøiden, J. MacNaughton, C. Maher, A. Michalon, M.E. Michalon-Mentzer, J. Mosquera, Z. Natkaniec, J. M. Nelson, G. Neuhofer, C. Pérez de los Heros, M. Pló, P. Porth, B. Powell, B. Quinn, A. Ramil, J.L. Riester, H. Rohringer, G. Sakrejda, I. Sakrejda, T.F. Thorsteinsen, John Traxler, C. Voltolini, A. Yáñez, P. Yepes, R. Zybert,
Tópico(s)Particle physics theoretical and experimental studies
ResumoCentral rapidity Λ production has been measured in sulfur collisions with Cu, Ag, and Pb at 200 GeV/c per nucleon. Lambdas produced in these collisions were identified by their charged decays recorded by a time projection chamber. The Λ yields are compared as a function of target mass. For each target, the yields are reported as a function of Λ transverse kinetic energy and zero degree energy (a measure of collision centrality). In each system, the data exceed predictions of the venus size-2(4.02) model of sulfur-nucleus collisions. The observed excesses show no obvious variation with collision centrality from moderate to highly central collisions.Received 26 December 1991DOI:https://doi.org/10.1103/PhysRevC.46.727©1992 American Physical Society
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