Transverse mass spectra of strange and multi-strange particles in Pb-Pb collisions at 158 A GeV/c

被引：72

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

Gulino, M

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

Norman, PI

Pastircák, B

Quercigh, E

Röhrich, D

Romano, G

Safarík, K

Sándor, L

Segato, G

Staroba, P

Thompson, M

Thorsteinsen, TF

Torrieri, GD

Tveter, TS

Urbán, J

Baillie, OV

Virgili, T

机构：

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

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

[3] Politecn Bari, Bari, Italy

[4] Sezione Ist Nazl Fis Nucl, Bari, Italy

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

[6] Hogskolen Bergen, Bergen, Norway

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

[8] Univ Catania, Catania, Italy

[9] Ist Nazl Fis Nucl, Catania, Italy

[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] Univ Padua, Dipartimento Fis, Padua, Italy

[14] Sezione Ist Nazl Fis Nucl, Padua, Italy

[15] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

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

[17] Sezione Ist Nazl Fis Nucl, Rome, Italy

[18] Univ Salerno, Dipartimento Sci Fisiche ER Caianiello, I-84100 Salerno, Italy

[19] Ist Nazl Fis Nucl, Salerno, Italy

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 2000年 / 14卷 / 04期

关键词：

D O I：

10.1007/s100520000386

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：

The WA97 experiment has measured the transverse mass (m(T)) spectra for negative hadrons (h(-)) and strange particles produced at mid-rapidity in Pb-Pb collisions. The increased statistics of analysed data samples allowed us to perform a study of the spectra of K-S(0), Lambda, Xi, Omega and h(-) as a function of the collision centrality. The data, which correspond to the most central 40% of the total inelastic cross section? have been divided into four centrality classes according to the estimated number of nucleons taking part in the collision. The mT spectra, analysed separately for each centrality bin, exhibit only weak (less than or equal to 15%) centrality dependence. The deviation of the Omega inverse slope from the linear dependence on the particle mass is confirmed even for the most central Pb-Pb collisions.

引用

页码：633 / 641

页数：9

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