Spatial anisotropy: a method to study anisotropic flow in heavy ion collisions |
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Authors: | CUI Xiang-Li L Yan WANG Xiao-Lian PENG Ru |
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Affiliation: | 1. University of Science and Technology of China, Hefei 230026, China 2. Wuhan University of Science and Technology, Wuhan 430070, China |
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Abstract: | We introduce a method to study anisotropic flow parameter v<,n> as a collective probe to Quark Gluon Plasma in relativistic heavy ion collisions. The emphasis is put on the use of the Fourier expansion of initial spatial azimuthal distributions of participant nucleons in the overlapped region. The coefficients ε<,n> of Fourier expansion are called the spatial anisotropy parameter for the n-th harmonic. We propose that collective dynamics can be studied by v<,n>/ε<,n>. In this paper, we will discuss in particular the second (n=2) and the fourth (n=4) harmonics. |
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Keywords: | Fourier expansion spatial anisotropy parameter collective dynamics thermalization |
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