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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544597.0, MPI für Physik / MPI für Physik
Cascade and anti-cascade production in central Pb+Pb collisions at 158 GeV/c per nucleon
Authors:The NA49 Collaboration; Afanasiev, S. V.; Eckardt, V.; Filip, P.; Freund, P.; Karev, A.; Sammer, T.; Schmitz, N.; Seyboth, P.; et al.
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physics Letters B
Journal Abbrev.:Phys.Lett.B
Issue / Number:538
Start Page:275
End Page:281
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Results of the production of Xi and Xi-bar hyperons in central Pb+Pb interactions at 158 GeV/c per nucleon are presented. This analysis utilises a global reconstruction procedure, which allows a measurement of 4pi integrated yields to be made for the first time. Inverse slope paramters, which are determined from an exponential fit to the transverse mass spectra, are shown. Central rapidity densities are found to be 1.49 +- 0.08 and 0.33 +- 0.04 per event per unit of rapidity for Xi and Xi-bar respectively. Yields integrated to full phase space are 4.12 +- 0.02 and 0.77 +- 0.04 for Xi and Xi-bar. The ratio of Xi-bar/Xi at mid-rapidity is 0.22 +- 0.03.
Classification / Thesaurus:NA49
Comment of the Author/Creator:10 pages, 9 figures
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2002-179
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/hep-ex/0202037
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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