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



ID: 544580.0, MPI für Physik / MPI für Physik
Energy Dependence of $\Lambda$ and $\bar{\Lambda}$ Production at CERN-SPS Energies
Authors:NA49 Collaboration; Mischke, A.; Eckardt, V.; Filip, P.; Freund, P.; Karev, A.; Sammer, T.; Schmitz, N.; Seyboth, P.; et al.
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Nuclear Physics A
Journal Abbrev.:Nucl.Phys.A
Issue / Number:715
Start Page:453
End Page:457
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Rapidity distributions for $\Lambda$ and $\bar{\Lambda}$ hyperons in central Pb-Pb collisions at 40, 80 and 158 A$\cdot$GeV and for ${\rm K}_{s}^{0}$ mesons at 158 A$\cdot$GeV are presented. The lambda multiplicities are studied as a function of collision energy together with AGS and RHIC measurements and compared to model predictions. A different energy dependence of the $\Lambda/\pi$ and $\bar{\Lambda}/\pi$ is observed. The $\bar{\Lambda}/\Lambda$ ratio shows a steep increase with collision energy. Evidence for a $\bar{\Lambda}/\bar{\rm p}$ ratio greater than 1 is found at 40 A$\cdot$GeV.
Classification / Thesaurus:NA49
Comment of the Author/Creator:6 pages, 9 figures, QM2002 proceedings, submitted to Nucl. Phys. A
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2002-184
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/nucl-ex/0209002
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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