Distributions of Realative Momentum of Pion Pairs in Relativistic Heavy Ion Collisions

  • The distributions of the relative momentum of correlated and uncorrelated pion pairs are given. The relations between the parameters of elliptical and spherical pion sources are obained by using the distribution of the relative momentum of correlated pion pairs, and comparison is made with the experimental result of central relativistic heavy ion collisions 1. 8A GeV Ar+Pb. For higher tem- perature, the distribution of single-pion momentum p1(p)=N·exp(- m2+p2/T) should be used to obtain the results.
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  • [1] Weiner R M. Phys. Rep., 2000, 327:249 2 Wiedemann U A, Heinz U. Phys. Rep., 1999, 319: 145 3 Boal D H, Gelbke C K, Jennings B K. Rev. Mod. Phys., 199(), 62:553 4 Gyulassy M, Kauffman S K, Bossingham R R et al. Phys. Rev., 1979, 20:2265 Zajc W A, Bistirlich J A, Bossingham R R et al. Phys. Rev., 1984, C29:2173 6 CHEN Xiao–Fan. High Energy Phys. and Nucl. Phys., 1998, 22: 424 (in Chinese)(陈小凡.高能物理与核物理,1998,22:424)7 CHEN Xiao–Fan. High Energy Phys. and Nucl. Phys., 1998, 22:903 (in Chinese)(陈小凡 高能物理与核物理,1998,22:903) 8 CHEN Xiao–Fan, CHEN Zhi–Lai. High Energy Phys. and Nucl. Phys., 1999, 23: 1097 (in Chinese)(陈小凡,陈志来.高能物理与核物理,1999,23:1097) 9 CHEN Xiao – Fan, CHEN Zki–Lai, YANG Xue–Dong et al. High Energy Phys. and Nucl. Pkys., 2000, 24:524 (in Chinese)(陈小凡,陈志来,杨学栋等.高能物理与核物理,2000,24:524)10 Lednicky R, Lyuboshitz V, Mikhailov K et al. Phys. Rev., 2000, C60:034901 11 Beavis D, CHU S Y, FUNG S Y et al. Phys. Rev., 1983, C28:256112 Beavis D, CHU S Y, FUNG S Y et al. Phys. Rev.,1986, C34:757 13 LIU Y M, Beavis D, CHU S Y et al. Phys. Rev., 1986, C34:166714 CHEN Xiao–Fan, CHEN Zhi–Lai, YANG Xue–Dong et al. High Energy Phys. and Nucl. Phys., 2001, 25: 149 (in Chinese)(陈小凡,陈志来,杨学栋等 高能物理与核物理,2001,25:149)
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CHEN Xiao-Fan, CHEN Zhi-Lai, YANG Xue-Dong and LI Zhu-Peng. Distributions of Realative Momentum of Pion Pairs in Relativistic Heavy Ion Collisions[J]. Chinese Physics C, 2001, 25(10): 1002-1005.
CHEN Xiao-Fan, CHEN Zhi-Lai, YANG Xue-Dong and LI Zhu-Peng. Distributions of Realative Momentum of Pion Pairs in Relativistic Heavy Ion Collisions[J]. Chinese Physics C, 2001, 25(10): 1002-1005. shu
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Received: 2000-08-08
Revised: 1900-01-01
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Distributions of Realative Momentum of Pion Pairs in Relativistic Heavy Ion Collisions

    Corresponding author: CHEN Xiao-Fan,
  • Department of Physics, Harbin Institute of Technology, Harbin 150001, China

Abstract: The distributions of the relative momentum of correlated and uncorrelated pion pairs are given. The relations between the parameters of elliptical and spherical pion sources are obained by using the distribution of the relative momentum of correlated pion pairs, and comparison is made with the experimental result of central relativistic heavy ion collisions 1. 8A GeV Ar+Pb. For higher tem- perature, the distribution of single-pion momentum p1(p)=N·exp(- m2+p2/T) should be used to obtain the results.

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