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arXiv 0711.2273nucl-ex
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从SPS到RHIC奇异产生的能量和系统尺寸依赖性

Energy and System Size Dependence of Strangeness Production from SPS to RHIC

Jun Takahashi

摘要:

奇异粒子的产生是研究相对论性重离子碰撞中强相互作用物质的重要实验观测。RHIC的STAR实验具有独特的能力,可以在广泛的接受范围内测量已识别的奇异粒子,为进行系统研究提供了丰富的数据集。除了来自Au+Au碰撞的数据外,来自p+p和d+Au碰撞的奇异粒子也可用于比较和归一化。在62 GeV和200 GeV的Cu+Cu反应的一组新的数据提供了一个机会,比较在Au+Au碰撞中观察到的系统尺寸依赖性与这个较小的系统尺寸。除了产量的比较,一个统计热模型被用来提取冻结出不同的系统尺寸和碰撞能量的特性。

英文摘要:

Strange particle production is an important experimental observable that allows the study of the strongly interacting matter created in relativistic heavy-ion collisions. The STAR experiment at RHIC has a unique capability of measuring identified strange particles over a wide range of acceptance providing a rich set of data to perform a systematic study. In addition to the data from Au+Au collisions, strange particles from p+p and d+Au collisions are also available for comparison and normalization. A new set of data from Cu+Cu reactions at 62 GeV and 200 GeV provides the chance to compare the system size dependence observed in Au+Au collisions with this smaller system size. In addition to the comparison of the yields, a statistical thermal model was used to extract freeze-out characteristics for the different system sizes and collision energies.

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。

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