Collision system and beam energy dependence of anisotropic flow fluctuations

New measurements of elliptic flow from two- and four-particle correlations are used to investigate flow fluctuations in collisions of U+U at sNN=193GeV, Cu+Au at sNN=200GeV and Au+Au at several beam energies. These measurements highlight the dependence of these fluctuations on the event shape, syste...

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Bibliographic Details
Published in:Nuclear physics. A 2019-02, Vol.982 (C), p.255-258
Main Author: Magdy, Niseem
Format: Article
Language:English
Subjects:
anisotropic flow
beam energy scan
flow fluctuations
heavy-ion collision
NUCLEAR PHYSICS AND RADIATION PHYSICS
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Summary:New measurements of elliptic flow from two- and four-particle correlations are used to investigate flow fluctuations in collisions of U+U at sNN=193GeV, Cu+Au at sNN=200GeV 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 η/s(T).
ISSN:0375-9474
DOI:10.1016/j.nuclphysa.2018.09.027