OPEN CHARM PRODUCTION IN CENTRAL Pb plus Pb COLLISIONS AT THE CERN SPS: STATISTICAL MODEL ESTIMATES

被引：9

作者：

Poberezhnyuk, R. V. ^{[1
]}

Gazdzicki, M. ^{[2
,3
]}

Gorenstein, M. I. ^{[1
,4
]}

机构：

[1] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[2] Goethe Univ, Frankfurt, Germany

[3] Jan Kochanowski Univ, Kielce, Poland

[4] Frankfurt Inst Adv Studies, Frankfurt, Germany

来源：

ACTA PHYSICA POLONICA B | 2017年 / 48卷 / 09期

关键词：

EARLY-STAGE;

D O I：

10.5506/APhysPolB.48.1461

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Charm particle production in nucleus-nucleus collisions at the CERN SPS energies is considered within a statistical approach. Namely, the Statistical Model of the Early Stage is used to calculate the mean multiplicity of charm particles in central Pb+Pb collisions. A small number of produced charm particles necessitates the use of the exact charm conservation law. The model predicts a rapid increase of mean charm multiplicity as a function of collision energy. The mean multiplicity calculated for central Pb+Pb collisions at the center-of-mass energy per nucleon pair root sNN = 17.3 GeV exceeds significantly the experimental upper limit. Thus, in order to describe open charm production model parameters and/or assumptions should be revised.

引用

页码：1461 / 1467

页数：7

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