Strangeness enhancement at midrapidity in Pb-Pb collisions at 158 A GeV/c:: A comparison with VENUS and RQMD models

被引：29

作者：

Antinori, F ^{[1
]}

Bakke, H

Beusch, W

Bloodworth, IJ

Caliandro, R

Carrer, N

Di Bari, D

Di Liberto, S

Elia, D

Evans, D

Fanebust, K

Fini, RA

Ftácnik, J

Ghidini, B

Grella, G

Helstrup, H

Holme, AK

Huss, D

Jacholkowski, A

Jones, GT

Kinson, JB

Knudson, K

Králik, I

Lenti, V

Lietava, R

Loconsole, RA

Lovhoiden, G

Manzari, V

Mazzoni, MA

Meddi, F

Michalon, A

Michalon-Mentzer, ME

Morando, M

Navach, F

Norman, PI

Pastircák, B

Quercigh, E

Romano, G

Safarík, K

Sándor, L

Segato, G

Staroba, P

Thompson, M

Thorsteinsen, TF

Torrieri, GD

Tveter, TS

Urbán, J

Baillie, OV

Virgili, T

Votruba, MF

机构：

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

[2] Sez INFN, Padua, Italy

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

[4] Politecn Bari, Bari, Italy

[5] Sez INFN, Bari, Italy

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

[7] Hogskolen Bergen, Bergen, Norway

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

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

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

[11] Univ haute Alsace, GRPHE, Mulhouse, France

[12] Univ Oslo, Inst Fys, N-0316 Oslo, Norway

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

[14] Univ La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[15] Sez INFN, Rome, Italy

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

[17] Ist Nazl Fis Nucl, Salerno, Italy

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 1999年 / 11卷 / 01期

关键词：

D O I：

10.1007/s100520050615

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Recently the WA97 Collaboration has measured K-S(0), Lambda, Xi, Omega and negative particle yields and transverse mass spectra at central rapidity in Pb-Pb and p-Pb collisions at 158 A GeV/c. These results are compared with the predictions of two of the most widely used event generators for heavy-ion collisions: VENUS 4.12 and RQMD 2.3. Both models predict that enhancement, increase with the strangeness content of the particle. They fail, however, to reproduce completely the measured values of yields at central rapidity. In particular, for multistrange particles, VENUS fails: to reproduce both the p-Pb and the Pb-Pb data. while RQMD works for p-Pb collisions but seems to be unable to reproduce the Omega data in Pb-Pb collisions. Moreover, the predicted behavior for strangeness production as: a function of the centrality of the collision appears to be different from the observed behavior.

引用

页码：79 / 88

页数：10

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