中国物理B ›› 2008, Vol. 17 ›› Issue (3): 883-895.doi: 10.1088/1674-1056/17/3/025

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Anisotropic emission of charged mesons and structure characteristic of emission source in heavy ion collisions at 1--2A GeV

刘福虎   

  1. Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2007-05-10 修回日期:2007-09-10 出版日期:2008-03-04 发布日期:2008-03-04
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10675077 and 10275042), the Shanxi Provincial Natural Science Foundation of China (Grant No 2007011005), and the Shanxi Provincial Foundation for Returned Overseas Scholars, China.

Anisotropic emission of charged mesons and structure characteristic of emission source in heavy ion collisions at 1--2A GeV

Liu Fu-Hu(刘福虎)†   

  1. Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China
  • Received:2007-05-10 Revised:2007-09-10 Online:2008-03-04 Published:2008-03-04
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10675077 and 10275042), the Shanxi Provincial Natural Science Foundation of China (Grant No 2007011005), and the Shanxi Provincial Foundation for Returned Overseas Scholars, China.

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摘要： Angular distributions of pions and kaons produced in heavy ion collisions at the low-energy end of high energies (1--2\,A GeV) have been investigated by using a multisource ideal gas model. The model covers the expansions and movements of the emission sources, and it is related to the collective flows. By using the analytic expression and the Monte Carlo method, the azimuthal and polar angle distributions of mesons are calculated by the model and compared with the experimental data of the KaoS Collaboration.

关键词: low-energy end of high energies, heavy ion collisions, charged mesons, anisotropic emission

Abstract: Angular distributions of pions and kaons produced in heavy ion collisions at the low-energy end of high energies (1--2 A GeV) have been investigated by using a multisource ideal gas model. The model covers the expansions and movements of the emission sources, and it is related to the collective flows. By using the analytic expression and the Monte Carlo method, the azimuthal and polar angle distributions of mesons are calculated by the model and compared with the experimental data of the KaoS Collaboration.

Key words: low-energy end of high energies, heavy ion collisions, charged mesons, anisotropic emission

中图分类号:  (Particle and resonance production)

  • 25.75.Dw
21.65.-f (Nuclear matter) 24.10.Lx (Monte Carlo simulations (including hadron and parton cascades and string breaking models)) 24.10.Pa (Thermal and statistical models) 25.75.Ld (Collective flow) 27.80.+w (190 ≤ A ≤ 219)