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

页码：427 / 441

页数：15

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