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arXiv 1107.2345nucl-ex
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NA49/NA61:在CERN SPS进行射束能量和系统尺寸扫描的结果和计划

NA49/NA61: results and plans on beam energy and system size scan at the CERN SPS

M. Gazdzicki

摘要:

本文介绍了在欧洲核子研究中心(CERN)超质子同步加速器上进行的NA 49和NA 61/SHINE实验的结果和计划。首先,NA 49证据创建夸克-胶子等离子体,解除禁闭的开始,在中心铅铅碰撞约30 A GeV的能量阈值进行了审查。然后介绍了NA 61/SHINE系统研究解禁闭起始性质的现状。其次,强相互作用物质的临界点进行了两个实验的搜索进行了讨论。NA 49测量了轻核和中等大小核碰撞中最高SPS能量158 A GeV处的大波动。它们似乎表明临界点的存在,并位于接近重子化学势约250兆电子伏。2009年开始的NA 61/SHINE束流能量和系统尺寸扫描将为临界点的存在提供证据,或反驳NA 49波动数据在临界点方面的解释。

英文摘要:

This paper presents results and plans of the NA49 and NA61/SHINE experiments at the CERN Super Proton Synchrotron concerning the study of relativistic nucleus-nucleus interactions. First, the NA49 evidence for the energy threshold of creating quark-gluon plasma, the onset of deconfinement, in central lead-lead collisions around 30A GeV is reviewed. Then the status of the NA61/SHINE systematic study of properties of the onset of deconfinement is presented. Second, the search for the critical point of strongly interacting matter undertaken by both experiments is discussed. NA49 measured large fluctuations at the top SPS energy, 158A GeV, in collisions of light and medium size nuclei. They seem to indicate that the critical point exists and is located close to baryonic chemical potential of about 250 MeV. The NA61/SHINE beam energy and system size scan started in 2009 will provide evidence for the existence of the critical point or refute the interpretation of the NA49 fluctuation data in terms of the critical point.

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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