1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 2Institute of Particle Physics, Central China Normal University, Wuhan 430079 3The Key Laboratory of Quark and Lepton Physics (Ministry of Education), Cental China Normal University, Wuhan 430079
Hadronic Transport Effects on Elliptic Flow
LI Na1, SHI Shu-Su2,3**
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 2Institute of Particle Physics, Central China Normal University, Wuhan 430079 3The Key Laboratory of Quark and Lepton Physics (Ministry of Education), Cental China Normal University, Wuhan 430079
摘要Elliptic flow v2 is considered as a probe to study partonic collectivity, and the measurement v2/ϵ can be used to describe the hydro behavior of the colliding system. We study the the effect of the hadronic process on the momentum anisotropy parameter v2 in a multiphase transport model. It is found that hadronic rescattering will depress the v2 signal built up at the partonic phase. A similar mass hierarchy is observed in the model as in the experiment at RHIC. We find that different particle species will approach the same ideal hydro limit if the hadronic process is excluded.
Abstract：Elliptic flow v2 is considered as a probe to study partonic collectivity, and the measurement v2/ϵ can be used to describe the hydro behavior of the colliding system. We study the the effect of the hadronic process on the momentum anisotropy parameter v2 in a multiphase transport model. It is found that hadronic rescattering will depress the v2 signal built up at the partonic phase. A similar mass hierarchy is observed in the model as in the experiment at RHIC. We find that different particle species will approach the same ideal hydro limit if the hadronic process is excluded.
LI Na;SHI Shu-Su;**
. Hadronic Transport Effects on Elliptic Flow[J]. 中国物理快报, 2011, 28(12): 122502-122502.
LI Na, SHI Shu-Su, **
. Hadronic Transport Effects on Elliptic Flow. Chin. Phys. Lett., 2011, 28(12): 122502-122502.
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2011, Vol. 28 
