Recent results from the NA36 experiment

E. G. Judd, E. Andersen, R. Blaes, M. Cherney, B. de la Cruz, C. Fernandez, C. Garabatos, J. A. Garzon, W. M. Geist, D. E. Greiner, C. R. Gruhn, M. Hafidouni, J. Hrubec, P. G. Jones, E. G. Judd, J. P.M. Kuipers, M. Ladrem, P. Ladron de Guevara, G. Lovhoiden, J. MacNaughtonJ. Mosquera, Z. Nataniec, J. M. Nelson, G. Neuhofer, C. Perez de los Heros, M. Plo, P. Porth, B. Powell, A. Ramil, H. Rohringer, I. Sakrejda, T. F. Thorsteinsen, J. Traxler, C. Voltolini, K. Wozniak, A. Yanez, R. Zybert

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Abstract

Measurements of the production of Λ particles in S+Pb and S+S collisions at a beam momentum of 200 GeV/c per nucleon are presented. The S+Pb data was taken with two different experimental configurations, and the results agree well with each other. The effects of a new Monte Carlo simulation of the NA36 TPC on the efficiency calculations are discussed. The Λ rapidity and multiplicity distributions are then compared to three theoretical models of heavy ion interactions, and to the NA35 results. There is still a significant disagreement between the two experiments. The comparison to the models indicates that reinteractions of secondaries are important in explaining the observed Λ yields. Finally, the yields of doubly strange baryons in S+Pb interactions have been recalculated using the new efficiencies. The ratios of double to singly strange baryons are unchanged from the previously published results.

Original languageEnglish (US)
Pages (from-to)291-306
Number of pages16
JournalNuclear Physics, Section A
Volume590
Issue number1-2
DOIs
StatePublished - Jul 24 1995

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Judd, E. G., Andersen, E., Blaes, R., Cherney, M., de la Cruz, B., Fernandez, C., Garabatos, C., Garzon, J. A., Geist, W. M., Greiner, D. E., Gruhn, C. R., Hafidouni, M., Hrubec, J., Jones, P. G., Judd, E. G., Kuipers, J. P. M., Ladrem, M., Ladron de Guevara, P., Lovhoiden, G., ... Zybert, R. (1995). Recent results from the NA36 experiment. Nuclear Physics, Section A, 590(1-2), 291-306. https://doi.org/10.1016/0375-9474(95)00242-S