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



ID: 544594.0, MPI für Physik / MPI für Physik
Lambda production in central Pb+Pb collisions 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):2002
Title of Journal:Journal of Physics G: Nuclear and Particle Physics
Journal Abbrev.:J.Phys.G
Issue / Number:28
Start Page:1761
End Page:1768
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:In this paper we present recent results from the NA49 experiment for $\Lambda$ and $\bar{\Lambda}$ hyperons produced in central Pb+Pb collisions at 40, 80 and 158 A$\cdot$GeV. Transverse mass spectra and rapidity distributions for $\Lambda$ are shown for all three energies. The shape of the rapidity distribution becomes flatter with increasing beam energy. The multiplicities at mid-rapidity as well as the total yields are studied as a function of collision energy including AGS measurements. The ratio $\Lambda/\pi$ at mid-rapidity and in 4$\pi$ has a maximum around 40 A$\cdot$GeV. In addition, $\bar{\Lambda}$ rapidity distributions have been measured at 40 and 80 A$\cdot$GeV, which allows to study the $\bar{\Lambda}$/$\Lambda$ ratio.
Classification / Thesaurus:NA49
Comment of the Author/Creator:SQM proceedings. J. Phys. G: Nucl. Part. Phys.: submitted
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2002-180
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/nucl-ex/0201012
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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