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

被引：104
|
作者：
Antinori, F [1 ]
Bacon, P
Badalà, A
Barbera, R
Belogianni, A
Beusch, W
Bloodworth, IJ
Bombara, M
Bruno, GE
Bull, SA
Caliandro, R
Campbell, M
Carena, W
Carrer, N
Clarke, RF
Dainese, A
Di Bari, D
Di Liberto, S
Divià, R
Elia, D
Evans, D
Feofilov, GA
Fini, RA
Ganoti, P
Ghidini, B
Grella, G
Helstrup, H
Hetland, KF
Holme, AK
Huss, D
Jacholkowski, A
Jones, GT
Jovanovic, P
Jusko, A
Kamermans, R
Kinson, JB
Knudson, K
Kondratiev, V
Králik, I
Kravcáková, A
Kuijer, P
Lenti, V
Lietava, R
Loconsole, RA
Lovhoiden, G
Manzari, V
Mazzoni, MA
Meddi, F
Michalon-Mentzer, ME
Michalon, A
机构：
[1] Univ Padua, Padua, Italy
[2] Ist Nazl Fis Nucl, Padua, Italy
[3] Univ Birmingham, Birmingham, W Midlands, England
[4] Univ Catania, Catania, Italy
[5] Ist Nazl Fis Nucl, I-95129 Catania, Italy
[6] Univ Athens, Dept Phys, Athens, Greece
[7] CERN, European Lab Particle Phys, CH-1211 Geneva, Switzerland
[8] Slovak Acad Sci, Inst Phys Expt, Kosice, Slovakia
[9] Univ Politecn Bari, Dipartimento Fis, Bari, Italy
[10] Ist Nazl Fis Nucl, I-70126 Bari, Italy
[11] Univ Roma La Sapienza, Rome, Italy
[12] Ist Nazl Fis Nucl, Rome, Italy
[13] St Petersburg State Univ, St Petersburg, Russia
[14] Univ Salerno, Dipartimento Sci Fisiche ER Caianiello, Salerno, Italy
[15] Ist Nazl Fis Nucl, Salerno, Italy
[16] Hogskolen Bergen, Bergen, Norway
[17] Univ Oslo, Inst Fys, Oslo, Norway
[18] Univ Haute Alsace, GRPHE, Mulhouse, France
[19] Univ Utrecht, Utrecht, Netherlands
[20] NIKHEF, Utrecht, Netherlands
[21] Safarik Univ, Kosice, Slovakia
[22] ULP, IReS, Strasbourg, France
[23] Univ Bergen, Inst Fys, Bergen, Norway
[24] Coll France, F-75231 Paris, France
[25] Inst Phys, Prague, Czech Republic
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2006年 / 32卷 / 04期
关键词：
D O I：
10.1088/0954-3899/32/4/003
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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.
引用
收藏
页码：427 / 441
页数：15
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