Λ and Λ¯ Production in Central Pb-Pb Collisions at 40, 80, and 158AGeV

T. Anticic et al. (The NA49 Collaboration)
Phys. Rev. Lett. 93, 022302 – Published 9 July 2004

Abstract

Production of Lambda and Antilambda hyperons was measured in central Pb-Pb collisions at 40, 80, and 158AGeV beam energy on a fixed target. Transverse mass spectra and rapidity distributions are given for all three energies. The Λ/π ratio at midrapidity and in full phase space shows a pronounced maximum between the highest BNL Alternating Gradient Synchrotron and 40A   GeV CERN Super Proton Synchrotron energies, whereas the Λ¯/π ratio exhibits a monotonic increase.

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  • Received 28 November 2003

DOI:https://doi.org/10.1103/PhysRevLett.93.022302

©2004 American Physical Society

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Vol. 93, Iss. 2 — 9 July 2004

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