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Collision system and beam energy dependence of anisotropic flow fluctuations

机译:各向异性流动波动的碰撞系统和光束能量依赖性

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摘要

New measurements of elliptic flow from two- and four-particle correlations are used to investigate flow fluctuations in collisions of U+U at root s(NN) = 193 GeV, Cu+Au at root s(NN) = 200 GeV and Au+Au at several beam energies. These measurements highlight the dependence of these fluctuations on the event shape, system size and beam energy and indicate a dominant role for initial-state-driven fluctuations. These measurements could provide further constraints for initial-state models, as well as for precision extraction of the temperature-dependent specific shear viscosity eta/s(T).
机译:来自两种和四粒子相关性的椭圆形流量的新测量用于研究Root S(NN)= 193 GEV,Cu + Au在Root S(NN)= 200 GEV和Au +的碰撞中的流量波动 Au在几个光束能量。 这些测量突出了这些波动对事件形状,系统尺寸和光束能量的依赖性,并指示初始状态驱动波动的主导作用。 这些测量可以为初始状态模型提供进一步的约束,以及精确提取温度依赖性特异性剪切粘度ETA / S(T)。

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