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

  • 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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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.
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. shu
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Received: 2002-03-06
Revised: 1900-01-01
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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

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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