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arXiv 0806.2261nucl-ex
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STAR的介质特性和射流-介质相互作用

Medium properties and jet-medium interaction from STAR

Jana Bielcikova

摘要:

我们报道了最近STAR关于RHIC重离子碰撞中2-和3-粒子关联的介质修正的结果。特别是一个额外的扩展相关性的伪快度(“脊”),不存在于p+p或d+Au碰撞的属性,进行了讨论。其次,我们研究了低、中$p_T$的背侧关联峰的形状变化,以寻找马赫锥激波或切伦科夫胶子发射的信号。

英文摘要:

We report recent STAR results on medium modification of 2- and 3-particle correlations in heavy-ion collisions at RHIC. In particular properties of an additional extended correlation in pseudo-rapidity (``the ridge''), not present in p+p or d+Au collisions, are discussed. Next, the shape modification of the away-side correlation peak at low- and intermediate-$p_T$ is investigated to look for signals of Mach cone shock waves or Čerenkov gluon emission.

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