Bochum 1998 – scientific programme
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HK: Hadronen und Kerne
HK 2: Heavy Ion Reactions I, Ultrarelativistic Energies
HK 2.8: Talk
Monday, March 16, 1998, 16:00–16:15, P
Ξ Production in Central Pb+Pb Collisions at 158 A·GeV* — •F. Gabler1, C. Bormann1, M. Gaździcki1, J. Grebieszkow2, G. Odyniec3, W. Retyk2, D. Röhrich1, R. Stock1, and H. Ströbele1 — 1Institut für Kernphysik, Universität Frankfurt, August Euler-Str. 6, D-60486 Frankfurt — 2Institute for Experimental Physics, University of Warsaw, Poland — 3LBNL, University of California,Berkeley,USA
The large acceptance of the NA49 experiment at the CERN SPS facilitates the study of
strange and multi-strange hadron production in central Pb+Pb reactions at
158 A·GeV within a wide range in rapidity and transverse momentum.
Time Projection Chambers with high precision momentum resolution
allow to reconstruct and identify neutral strange and charged multi-strange particles by means
of their typical decay topologies.
First results on double strange Ξ- and Ξ-hyperons measured in central Pb+Pb
reactions will be presented.
The inverse slope parameter T of the Ξ+ Ξ transverse mass spectrum was found to be >300 MeV.
The production ratios of the different singly and doubly strange hadrons will also presented.
The rapidity distributions of Λ and Λ produced in
central Pb+Pb collisions will be compared with other collision systems.
*Supported by BMBF and Graduiertenkolleg Frankfurt