Searching for the QCD critical point in AA collisions at CERN SPS

被引：2

作者：

Davis, N. ^{[1
]}

Antoniou, N. G. ^{[1
]}

Diakonos, F. K. ^{[1
]}

机构：

[1] Univ Athens, Dept Phys, GR-10679 Athens, Greece

来源：

PHYSICS OF ATOMIC NUCLEI | 2012年 / 75卷 / 06期

关键词：

PHASE-DIAGRAM; TEMPERATURE; RESTORATION; DENSITY;

D O I：

10.1134/S1063778812060117

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：

We investigate the transverse momentum correlations of pairs of opposite charged pions near their production threshold. Through intermittency analysis, we search for power-law dependence on observation scale, as dictated by critical QCD. We analyze the data on the most central collisions in four A systems (A = p, C, Si, Pb) at maximum SPS energy. We find a significant effect for the SiSi system approaching in size the critical QCD predictions as measured by the intermittency index I center dot (2). Absence of this effect in the (pi (-), pi (-)) sector of the SiSi system gives further support that the observed behavior in the isoscalar mode is of critical origin.

引用

页码：661 / 663

页数：3

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