Pseudorapidity distributions of charged particles in Pb-Pb collisions at super proton synchrotron energies from the NA50 experiment

被引：0

作者：

Idzik, M ^{[1
]}

机构：

[1] LIP, Lisbon, Portugal

[2] Univ Piemonte Orientale, Alessandria, Italy

[3] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[4] CNRS, IN2P3, LAPP, Annecy Le Vieux, France

[5] Univ Clermont Ferrand, LPC, Aubiere, France

[6] CNRS, IN2P3, Aubiere, France

[7] IFA, Bucharest, Romania

[8] Univ Cagliari, Ist Nazl Fis Nucl, Cagliari, Italy

[9] CERN, CH-1211 Geneva 23, Switzerland

[10] INR, Moscow, Russia

[11] Univ Paris 11, IPN, Orsay, France

[12] CNRS, IN2P3, Orsay, France

[13] Ecole Polytech, LPNHE, Palaiseau, France

[14] CNRS, IN2P3, Palaiseau, France

[15] Univ Strasbourg 1, IRS, Strasbourg, France

[16] CNRS, IN2P3, Strasbourg, France

[17] Univ Turin, Ist Nazl Fis Nucl, Turin, Italy

[18] Univ Lyon 1, IPN, F-69622 Villeurbanne, France

[19] CNRS, IN2P3, F-69622 Villeurbanne, France

[20] YerPhI, Yerevan, Armenia

[21] Univ Algarve, FCT, Faro, Portugal

[22] Univ Tecn Lisboa, Inst Super Tecn, P-1096 Lisbon, Portugal

[23] Univ Min & Met Krakow, Fac Phys & Nucl Tech, Krakow, Poland

来源：

PRAMANA-JOURNAL OF PHYSICS | 2003年 / 60卷 / 05期

关键词：

relativistic heavy-ion collisions; pseudorapidity distributions; multiparticle production; silicon multiplicity detectors;

D O I：

10.1007/BF02707031

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the measurements of charged particle pseudorapidity distributions dN(ch)/deta performed by the NA50 experiment in Pb-Pb collisions at the CERN SPS. Measurements were done at incident energies of 40 GeV (roots = 8.77 GeV) and 158 GeV (roots = 17.3 GeV) per nucleon over a broad impact parameter range. The multiplicity distributions are studied as a function of centrality using the number of participating nucleons (N-part), or the number of binary nucleon-nucleon collisions (N-coll). Their values at midrapidity exhibit a linear scaling with Npart at both energies. Particle yield increases approximately by a factor of 2 between roots = 8.77 GeV and roots = 17.3 GeV.

引用

页码：1059 / 1065

页数：7

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