Energy Dependence of Hyperon Production in Nucleus-Nucleus Collisions at SPS

F Antinori; Paul Bacon; A Bhasin; Ian Bloodworth; Stephen Bull; Rory Clarke; David Evans; Goronwy Tudor Jones; Predrag Jovanovic; John Kinson; Roman Lietava; Paul Norman; Orlando Villalobos Baillie; Milan Votruba

doi:10.1016/j.physletb.2004.05.025

Energy Dependence of Hyperon Production in Nucleus-Nucleus Collisions at SPS

F Antinori, Paul Bacon, A Bhasin, Ian Bloodworth, Stephen Bull, Rory Clarke, David Evans, Goronwy Tudor Jones, Predrag Jovanovic, John Kinson, Roman Lietava, Paul Norman, Orlando Villalobos Baillie, Milan Votruba

Physics and Astronomy

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Abstract

A measurement of strange baryon and antibaryon production in Pb-Pb collisions has been carried out by the NA57 experiment at the CERN SPS, with 40 and 158 A GeV/c beam momentum. Results on Lambda, Xi and Omega hyperon yields at mid-rapidity in the most central 53% of Pb-Pb collisions at 40 A GeV/c are presented and compared with those obtained at higher energy, in the same collision centrality range. The Lambda and Xi(-) yields per unit rapidity stay roughly constant while those of Omega(-), A, (&UXi;) over bar (+) and (&UOmega;) over bar (+) increase when going to the higher SPS energy. Hyperon yields at the SPS are compared with those from the STAR experiment in root(s)NN = 130 GeV Au-Au collisions at RHIC. (C) 2004 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	68-74
Number of pages	7
Journal	Physics Letters B
Volume	595
DOIs	https://doi.org/10.1016/j.physletb.2004.05.025
Publication status	Published - 1 Jan 2004

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10.1016/j.physletb.2004.05.025

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title = "Energy Dependence of Hyperon Production in Nucleus-Nucleus Collisions at SPS",

abstract = "A measurement of strange baryon and antibaryon production in Pb-Pb collisions has been carried out by the NA57 experiment at the CERN SPS, with 40 and 158 A GeV/c beam momentum. Results on Lambda, Xi and Omega hyperon yields at mid-rapidity in the most central 53% of Pb-Pb collisions at 40 A GeV/c are presented and compared with those obtained at higher energy, in the same collision centrality range. The Lambda and Xi(-) yields per unit rapidity stay roughly constant while those of Omega(-), A, (&UXi;) over bar (+) and (&UOmega;) over bar (+) increase when going to the higher SPS energy. Hyperon yields at the SPS are compared with those from the STAR experiment in root(s)NN = 130 GeV Au-Au collisions at RHIC. (C) 2004 Elsevier B.V. All rights reserved.",

author = "F Antinori and Paul Bacon and A Bhasin and Ian Bloodworth and Stephen Bull and Rory Clarke and David Evans and {Tudor Jones}, Goronwy and Predrag Jovanovic and John Kinson and Roman Lietava and Paul Norman and {Villalobos Baillie}, Orlando and Milan Votruba",

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AU - Antinori, F

AU - Bacon, Paul

AU - Bhasin, A

AU - Bloodworth, Ian

AU - Bull, Stephen

AU - Clarke, Rory

AU - Evans, David

AU - Tudor Jones, Goronwy

AU - Jovanovic, Predrag

AU - Kinson, John

AU - Lietava, Roman

AU - Norman, Paul

AU - Villalobos Baillie, Orlando

AU - Votruba, Milan

PY - 2004/1/1

Y1 - 2004/1/1

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AB - A measurement of strange baryon and antibaryon production in Pb-Pb collisions has been carried out by the NA57 experiment at the CERN SPS, with 40 and 158 A GeV/c beam momentum. Results on Lambda, Xi and Omega hyperon yields at mid-rapidity in the most central 53% of Pb-Pb collisions at 40 A GeV/c are presented and compared with those obtained at higher energy, in the same collision centrality range. The Lambda and Xi(-) yields per unit rapidity stay roughly constant while those of Omega(-), A, (&UXi;) over bar (+) and (&UOmega;) over bar (+) increase when going to the higher SPS energy. Hyperon yields at the SPS are compared with those from the STAR experiment in root(s)NN = 130 GeV Au-Au collisions at RHIC. (C) 2004 Elsevier B.V. All rights reserved.

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M3 - Article

VL - 595

SP - 68

EP - 74

JO - Physics Letters B

JF - Physics Letters B

ER -

Energy Dependence of Hyperon Production in Nucleus-Nucleus Collisions at SPS

Abstract

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