Centrality dependence of K+ produced in Pb plus Pb collisions at 158 GeV/nucleon

被引：8

作者：

Kabana, S

机构：

[1] Univ Bern, High Energy Phys Lab, CH-3012 Bern, Switzerland

[2] LAPP, CNRS, IN2P3, F-74941 Annecy Le Vieux, France

[3] CERN, CH-1211 Geneva, Switzerland

[4] Coll France, PCC, F-75005 Paris, France

[5] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

[6] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2001年 / 27卷 / 03期

关键词：

D O I：

10.1088/0954-3899/27/3/329

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The NA52 collaboration is searching for a discontinuous behaviour of charged kaons produced in Pb + Pb collisions at 158 A GeV as a function of the impact parameter, which could reveal a quark-gluon plasma phase transition. The K+ yield is found to grow proportionally to the number of participating ('wounded') nucleons N, above N = 100. Previous NA52 data agree with the above finding and show a discontinuous behaviour in the kaon centrality dependence near N = 100, marking the onset of strangeness enhancement, over, for example, p + A data at the same roots, in a chemically equilibrated phase.

引用

页码：495 / 496

页数：2

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