arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0810.0051nucl-ex
收藏

如何理解RHIC的射流相关性结果？

How to Make Sense of the Jet Correlations Results at RHIC?

Jiangyong Jia

备注：
9 pages, 12 figures, proceedings for Hot Quarks in Estes Park, Colorado
发表信息：
Eur.Phys.J.C62:255-264,2009
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

我们回顾了RHIC的双强子关联结果。基于$p_T$、$Δϕ$、$Δη$和粒子种类的相关景观，构建了一致的物理图像。我们表明，数据是一致的，与碎片之间的竞争幸存的射流和响应的介质淬火射流。在中间$p_T$，介质响应是重要的，触发强子的大部分不来自喷流碎裂。我们认为，这些强子可以强烈地影响低$p_T$相关数据的解释。我们证明了这一点，通过一个简单的几何射流吸收模型模拟。该模型表明，在低$p_T$时，介质响应强子之间的相关控制对产额，并模仿远离侧$Δϕ$分布的双峰结构。这种相关性也被证明是导致复杂的解释结果的反应平面依赖性和三粒子的相关性。最后，我们简要地讨论了几个实验问题，这是重要的实验数据的正确解释。

英文摘要：

We review the di-hadron correlation results from RHIC. A consistent physical picture was constructed based on the correlation landscape in $p_T$, $Δϕ$, $Δη$ and particle species. We show that the data are consistent with competition between fragmentation of survived jets and response of the medium to quenched jets. At intermediate $p_T$ where the medium response are important, a large fraction of trigger hadrons do not come from jet fragmentation. We argue that these hadrons can strongly influence the interpretation of the low $p_T$ correlation data. We demonstrate this point through a simple geometrical jet absorption model simulation. The model shows that the correlation between medium response hadrons dominates the pair yield and mimics the double hump structure of the away-side $Δϕ$ distribution at low $p_T$. This correlation was also shown to lead to complications in interpreting the results on reaction plane dependence and three particle correlations. Finally, we briefly discuss several experimental issues which are important for proper interpretations of the experimental data.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑