Ω and φ in Au+Au collisions at sqrt(SNN)=200 and 11.5 GeV from a multiphase transport model

  • Within the framework of a multiphase transport model, we study the production and properties of Ω and φ in Au + Au collisions with a new set of parameters for √sNN=200 GeV and with the original set of parameters for √sNN=11.5 GeV. The AMPT model with string melting provides a reasonable description at √sNN=200 GeV, while the default AMPT model describes the data well at √sNN=11.5 GeV. This indicates that the system created at top RHIC energy is dominated by partonic interactions, while hadronic interactions become important at lower beam energy, such as √sNN=11.5 GeV. The comparison of N+-)/[2N(φ)] ratio between data and calculations further supports the argument. Our calculations can generally describe the data of nuclear modification factor as well as elliptic flow.
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Y. J. Ye, J. H. Chen, Y. G. Ma, S. Zhang and C. Zhong. Ω and φ in Au+Au collisions at sqrt(SNN)=200 and 11.5 GeV from a multiphase transport model[J]. Chinese Physics C, 2017, 41(8): 084101. doi: 10.1088/1674-1137/41/8/084101
Y. J. Ye, J. H. Chen, Y. G. Ma, S. Zhang and C. Zhong. Ω and φ in Au+Au collisions at sqrt(SNN)=200 and 11.5 GeV from a multiphase transport model[J]. Chinese Physics C, 2017, 41(8): 084101.  doi: 10.1088/1674-1137/41/8/084101 shu
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Received: 2017-02-03
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    Supported by National Natural Science Foundation of China (11421505,11520101004,11220101005,11275250,11322547),Major State Basic Research Development Program in China (2014CB845400,2015CB856904) and Key Research Program of Frontier Sciences of CAS (QYZDJSSW-SLH002)

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Ω and φ in Au+Au collisions at sqrt(SNN)=200 and 11.5 GeV from a multiphase transport model

  • 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 3.  Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 4. ShanghaiTech. University, Shanghai 200031, China
Fund Project:  Supported by National Natural Science Foundation of China (11421505,11520101004,11220101005,11275250,11322547),Major State Basic Research Development Program in China (2014CB845400,2015CB856904) and Key Research Program of Frontier Sciences of CAS (QYZDJSSW-SLH002)

Abstract: Within the framework of a multiphase transport model, we study the production and properties of Ω and φ in Au + Au collisions with a new set of parameters for √sNN=200 GeV and with the original set of parameters for √sNN=11.5 GeV. The AMPT model with string melting provides a reasonable description at √sNN=200 GeV, while the default AMPT model describes the data well at √sNN=11.5 GeV. This indicates that the system created at top RHIC energy is dominated by partonic interactions, while hadronic interactions become important at lower beam energy, such as √sNN=11.5 GeV. The comparison of N+-)/[2N(φ)] ratio between data and calculations further supports the argument. Our calculations can generally describe the data of nuclear modification factor as well as elliptic flow.

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