Probinhg the High Density Behavior of the Symmetry Energy by Using Proton Elliptic Flow

  • Based on the isospin- and momentum-dependent transport model IBUU04, we calculated the reaction of the 132Sn+124Sn systems in semi-central collisions at beam energies of 400/A MeV, 600/A MeV and 800/A MeV by adopting two different density dependent symmetry energies. It was found that the proton differential elliptic flow as a function of transverse momentum is quite sensitive to the density dependence of symmetry energy, especially for the considered beam energy range. Therefore the proton differential elliptic flow may be considered as a robust probe for investigating the high density behavior of symmetry energy in intermediate energy heavy ion collisions.
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ZHANG Fang, ZUO Wei and YONG Gao-Chan. Probinhg the High Density Behavior of the Symmetry Energy by Using Proton Elliptic Flow[J]. Chinese Physics C, 2007, 31(8): 741-744.
ZHANG Fang, ZUO Wei and YONG Gao-Chan. Probinhg the High Density Behavior of the Symmetry Energy by Using Proton Elliptic Flow[J]. Chinese Physics C, 2007, 31(8): 741-744. shu
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Received: 2006-07-27
Revised: 2007-03-28
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Probinhg the High Density Behavior of the Symmetry Energy by Using Proton Elliptic Flow

    Corresponding author: ZUO Wei,
  • Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Physics and Technology Lanzhou University, Lanzhou 730000, China3 Graduate University of Chinese Academy of Sciences, Beijing 100049, China4 Center of Theoretical Physics and Interdisciplinary Physics, Lanzhou University, Lanzhou 730000, China

Abstract: Based on the isospin- and momentum-dependent transport model IBUU04, we calculated the reaction of the 132Sn+124Sn systems in semi-central collisions at beam energies of 400/A MeV, 600/A MeV and 800/A MeV by adopting two different density dependent symmetry energies. It was found that the proton differential elliptic flow as a function of transverse momentum is quite sensitive to the density dependence of symmetry energy, especially for the considered beam energy range. Therefore the proton differential elliptic flow may be considered as a robust probe for investigating the high density behavior of symmetry energy in intermediate energy heavy ion collisions.

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