Strangeness enhancement at mid-rapidity in Pb-Pb collisions at 158 A GeV/c

被引：195

作者：

Andersen, E ^{[1
]}

Antinori, F

Armenise, N

Bakke, H

Bán, J

Barberis, D

Beker, H

Beusch, W

Bloodworth, IJ

Böhm, J

Caliandro, R

Campbell, M

Cantatore, E

Carrer, N

Catanesi, MG

Chesi, E

Dameri, M

Darbo, G

Diaczek, A

Di Bari, D

Di Liberto, S

Earl, BC

Elia, D

Evans, D

Fanebust, K

Fini, RA

Fontaine, JC

Ftácnik, J

Ghidini, B

Grella, G

Guida, M

Heijne, EHM

Helstrup, H

Holme, AK

Huss, D

Jacholkowski, A

Jones, GT

Jovanovic, P

Jusko, A

Kachelhoffer, T

Kinson, JB

Kirk, A

Klempt, W

Knudsen, BTH

Knudson, K

Králik, I

Lenti, V

Lietava, R

Loconsole, RA

Lovhoiden, G

机构：

[1] Univ Bergen, Inst Fys, Bergen, Norway

[2] Univ Bari, Dipartimento IA Fis, Bari, Italy

[3] Politecn Bari, Bari, Italy

[4] Sezione INFN, Bari, Italy

[5] Hogskolen Bergen, Bergen, Norway

[6] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

[7] CERN, European Lab Particle Phys, CH-1211 Geneva, Switzerland

[8] Univ Genoa, Dipartimento Fis, Genoa, Italy

[9] Ist Nazl Fis Nucl, Genoa, Italy

[10] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia

[11] Ist Nazl Fis Nucl, Lab Nazl Legnaro, Legnaro, Italy

[12] Univ Haute Alsace, GRPHE, Mulhouse, France

[13] Univ Oslo, Inst Fys, Oslo, Norway

[14] Univ Padua, Dipartimento Fis, Padua, Italy

[15] Ist Nazl Fis Nucl, Padua, Italy

[16] Coll France, Paris, France

[17] IN2P3, Paris, France

[18] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic

[19] Univ Rome La Sapienza, Dipartimento Fis, Rome, Italy

[20] Ist Nazl Fis Nucl, Rome, Italy

[21] Univ Salerno, Dipartimento Sci Fis ER Caianiello, I-84100 Salerno, Italy

[22] Ist Nazl Fis Nucl, Salerno, Italy

[23] ULP, IN2P3, Inst Rech Subatom, Strasbourg, France

来源：

PHYSICS LETTERS B | 1999年 / 449卷 / 3-4期

基金：

英国医学研究理事会;

关键词：

D O I：

10.1016/S0370-2693(99)00140-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

K-S(0), Lambda, Xi, Omega and negative particle yields and transverse mass spectra have been measured at central rapidity in Pb-Pb and p-Pb collisions at 158 A GeV/c. Yields are studied as a function of the number of nucleons participating in the collision N-part, which is estimated with the Glauber model. From p-Fb to Pb-Pb collisions the particle yields per participant increase substantially, The enhancement is more pronounced for multistrange particles, and exceeds an order of magnitude for the Omega. For a number of participants, N-part, greater than 100, however, all yields per participant appear to be constant. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：401 / 406

页数：6

共 23 条

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