Spatial anisotropy: a method to study anisotropic flow in heavy ion collisions

CUI Xiang-Li; LV Yan; WANG Xiao-Lian; PENG Ru

doi:10.1088/1674-1137/35/5/013

Chinese Physics C> 2011, Vol. 35> Issue(5) : 471-474 DOI: 10.1088/1674-1137/35/5/013

Spatial anisotropy: a method to study anisotropic flow in heavy ion collisions

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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.

References

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CUI Xiang-Li, LV Yan, WANG Xiao-Lian and PENG Ru. Spatial anisotropy: a method to study anisotropic flow in heavy ion collisions[J]. Chinese Physics C, 2011, 35(5): 471-474. doi: 10.1088/1674-1137/35/5/013

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Received: 2010-07-21
Revised: 2010-11-16

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Spatial anisotropy: a method to study anisotropic flow in heavy ion collisions

Received Date: 2010-07-21

Accepted Date: 2010-11-16

Available Online: 2011-05-05

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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Spatial anisotropy: a method to study anisotropic flow in heavy ion collisions

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