K S 0 , I⟩ and aparts per thousand production at intermediate to high pT from Au plus Au collisions at=39, 11.5 and 7.7 GeV

被引：0
|
作者：
Zhu, Xianglei [1 ]
机构：
[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
来源：
CENTRAL EUROPEAN JOURNAL OF PHYSICS | 2012年 / 10卷 / 06期
关键词：
strangeness production; heavy ion collisions; QCD phase transition; onset of deconfinement; TRANSVERSE-MOMENTUM;
D O I：
10.2478/s11534-012-0102-3
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report on the p (T) dependence of nuclear modification factors (R (CP)) for K (S) (0) , I >, a parts per thousand and the ratios at mid-rapidity from Au+Au collisions at = 39, 11.5 and 7.7 GeV. At = 39 GeV, the R (CP) data show a baryon/meson separation at intermediate p (T) and a suppression for K (S) (0) for p (T) up to 4.5 GeV/c; the shows baryon enhancement in the most central collisions. However, at = 11.5 and 7.7 GeV, R (CP) shows less baryon/meson separation and shows almost no baryon enhancement. These observations indicate that the matter created in Au+Au collisions at = 11.5 or 7.7 GeV might be distinct from that created at = 39 GeV.
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收藏
页码：1345 / 1348
页数：4
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