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
收藏
页码：1059 / 1065
页数：7
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