Anisotropy of the Pion Emission and the Nuclear Equation of State

  • The anisotropy of the pion emission in the collisions of 1.8AGeV Ar+Pb is studied with the VUU model to obtain the information of the nuclear equation of state.We point out that the collective motion of pions in the final state has the final state has the characteristic similar to that of collective correlations of baryons,and the azimuthal anisotropy of pions is a sensitive parameter to the nuclear equation of state in the projectile rapidity region where the absorption of target spectator is weak.Collisions of 1.8AGeV Ar+Pb in the Bevalac streamer chamber are analyzed using the azimuthal correlation function for pions and the results favor the hard nuclear incompressibility.
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WANG Shan, LIU Yi-Ming and LOU Qing-Jun. Anisotropy of the Pion Emission and the Nuclear Equation of State[J]. Chinese Physics C, 1993, 17(8): 725-730.
WANG Shan, LIU Yi-Ming and LOU Qing-Jun. Anisotropy of the Pion Emission and the Nuclear Equation of State[J]. Chinese Physics C, 1993, 17(8): 725-730. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Anisotropy of the Pion Emission and the Nuclear Equation of State

    Corresponding author: WANG Shan,
  • Department of Physics,Harbin Institute of Technology,Harbin 1500061 Department of Physics,Kent State University,Kent,Ohio 442422 Department of Physics,University of Carlifornia,Riverside,Ca 92521

Abstract: The anisotropy of the pion emission in the collisions of 1.8AGeV Ar+Pb is studied with the VUU model to obtain the information of the nuclear equation of state.We point out that the collective motion of pions in the final state has the final state has the characteristic similar to that of collective correlations of baryons,and the azimuthal anisotropy of pions is a sensitive parameter to the nuclear equation of state in the projectile rapidity region where the absorption of target spectator is weak.Collisions of 1.8AGeV Ar+Pb in the Bevalac streamer chamber are analyzed using the azimuthal correlation function for pions and the results favor the hard nuclear incompressibility.

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