Collective Flow and the Space-Momentum Correlation in High Energy Heavy Ion Collisions

HUO Lei; ZHANG Wei-Ning; CHEN Xiang-Jun; ZHANG Jing-Bo; TANG Gui-Xin

Chinese Physics C> 2003, Vol. 27> Issue(1) : 53-57

Collective Flow and the Space-Momentum Correlation in High Energy Heavy Ion Collisions

Center of Theoretical Nuclear Physics, Natoinal Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China2 Department of Physics,Harbin Insitute of Technology, Harbin 150001,China

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Abstract：
The transverse flow in heavy ion collisions can be characterized by the azimuthal anisotropy of the final state particles. A clear signature of the azimuthal correlation between directed and elliptic flow is evidenced in the model calculations . It is found that the azimuthal correlation is sensitive to the type of elliptic flow. The collective transverse expansion in coordinate space affects the azimuthal distributions of the final state particles in momentum space and the space-momentum correlation would develop. The study indicates that the behaviour of elliptic flow in different events depends on the evaluation of event-by-event dynamical fluctuations.

References

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HUO Lei, ZHANG Wei-Ning, CHEN Xiang-Jun, ZHANG Jing-Bo and TANG Gui-Xin. Collective Flow and the Space-Momentum Correlation in High Energy Heavy Ion Collisions[J]. Chinese Physics C, 2003, 27(1): 53-57.

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Received: 2002-03-06
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Collective Flow and the Space-Momentum Correlation in High Energy Heavy Ion Collisions

Corresponding author: HUO Lei,

Center of Theoretical Nuclear Physics, Natoinal Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China2 Department of Physics,Harbin Insitute of Technology, Harbin 150001,China

Received Date: 2002-03-06

Accepted Date: 1900-01-01

Available Online: 2003-01-05

Abstract: The transverse flow in heavy ion collisions can be characterized by the azimuthal anisotropy of the final state particles. A clear signature of the azimuthal correlation between directed and elliptic flow is evidenced in the model calculations . It is found that the azimuthal correlation is sensitive to the type of elliptic flow. The collective transverse expansion in coordinate space affects the azimuthal distributions of the final state particles in momentum space and the space-momentum correlation would develop. The study indicates that the behaviour of elliptic flow in different events depends on the evaluation of event-by-event dynamical fluctuations.

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Collective Flow and the Space-Momentum Correlation in High Energy Heavy Ion Collisions

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