An Experimental Exploration of the QCD Phase Diagram: The Search for the Critical Point and the Onset of De-confinement
An Experimental Exploration of the QCD Phase Diagram: The Search for the Critical Point and the Onset of De-confinement
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发表时间：
2010-07
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通讯作者：
Star Collaboration M.M.Aggarwal;Z.Ahammed;A.V.Alakhverdyants;I.Alekseev;B.D.Anderson;D.Arkhipkin
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作者：
Star Collaboration M.M.Aggarwal;Z.Ahammed;A.V.Alakhverdyants;I.Alekseev;B.D.Anderson;D.Arkhipkin
QCD相图是RHIC物理计划的核心。虽然RHIC在其最大能量或接近最大能量的情况下已经成功运行了近十年，但很明显，该对撞机也可以在低至5 GeV的较低能量下运行，而无需进行大规模升级。探索RHIC设施中可利用的束流能量的整个区域是必要的。星星探测器由于其大的均匀接受能力和出色的粒子识别能力，具有独特的定位，可以深入和详细地执行这一计划。RHIC的第一次探索性束流能量扫描（BES）运行于2010年（运行10），因为几个星星升级，最重要的是一个完整的桶飞行时间探测器，现在已经完成，增加了新的功能，重要的有趣的物理在BES能量。在本文中，我们讨论了目前提出的测量，在每个波束能量下假设事件计数的测量精度估计。
The QCD phase diagram lies at the heart of what the RHIC Physics Program is all about. While RHIC has been operating very successfully at or close to its maximum energy for almost a decade, it has become clear that this collider can also be operated at lower energies down to 5 GeV without extensive upgrades. An exploration of the full region of beam energies available at the RHIC facility is imperative. The STAR detector, due to its large uniform acceptance and excellent particle identification capabilities, is uniquely positioned to carry out this program in depth and detail. The first exploratory beam energy scan (BES) run at RHIC took place in 2010 (Run 10), since several STAR upgrades, most importantly a full barrel Time of Flight detector, are now completed which add new capabilities important for the interesting physics at BES energies. In this document we discuss current proposed measurements, with estimations of the accuracy of the measurements given an assumed event count at each beam energy.