arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0903.4702nucl-ex
收藏

Au+Au在19.6 GeV的带电强子结果

Charged hadron results from Au+Au at 19.6 GeV

D. Cebra

摘要:

给出了在RHIC上用STAR探测器进行为期一天的$\sqrt{s_{NN}} = 19.6$ GeV Au+Au测试运行的结果。仅从175,000个触发事件中获得的这些结果的质量证明了STAR在RHIC即将进行的束流能量扫描中的一些物理能力。从这些19.6 GeV的Au+Au碰撞中,我们分析了$π^{\pm}$,$K^{\pm}$,$p$和$\bar{p}$在中快度和$m_T - m_0$ $< 1.0$ GeV/ $c^2$的横向质谱。我们还测量了两π干涉源半径。碰撞能量($\sqrt{s_{NN}} = 19.6$ GeV)的低能量金+金RHIC对撞机运行是非常接近的158 AGeV的固定目标铅+铅运行在SPS($\sqrt{s_{NN}} = 17.3$ GeV)。我们将这些STAR数据与NA 49,NA 44,WA 98和CERES发表的结果进行了比较。

英文摘要:

Results from a one day $\sqrt{s_{NN}} = 19.6$ GeV Au+Au test run at RHIC using the STAR detector are presented. The quality of these results from only 175,000 triggered events demonstrates some of STAR's physics capabilities for the upcoming beam energy scan at RHIC. From these 19.6 GeV Au+Au collisions, we have analyzed the transverse mass spectra of $π^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ at midrapidity and $m_T - m_0$ $< 1.0$ GeV/$c^2$. We have also measured the two-pion interferometry source radii. The collision energy ($\sqrt{s_{NN}} = 19.6$ GeV) of this low energy Au+Au RHIC collider run is very close to that of the 158 AGeV fixed-target Pb+Pb runs at the SPS ($\sqrt{s_{NN}} = 17.3$ GeV). We present comparisons between these STAR data and the results published by NA49, NA44, WA98, and CERES.

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。

↑