Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions

Details Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions

2006-01-18

arxiv.org/abs/nucl-ex/0601021v2

J.Phys. G32 (2006) 427-442

Physics

Nuclear Physics

Nuclear Experiment

submitted to J. Phys. G.: Nucl. Part. Phys

Scientific paper

10.1088/0954-3899/32/4/003

Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions.

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