Test of Nonstatic Spherical Quark-Gluon Plasma by Two-Pion Interferometry

  • A model of expanding pion sources in relativistic heavy ion collisions, when only hadronic matter is generated, is proposed. The two-pion correlation function at small relative momentum for such a model is obtained with two-pion interferometry at small relative momentum, and the relation between the real spatial parameter Re and the apparent spatial parameter Ra of the pion sources is given. The relation is different from the one when QGP is created. The difference can be used to test nonstatic, spherical quark-gluon plasma produced in relativistic heavy ion collisions. The relation also showes a scaling behavior.
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  • [1] . CHEN Xiao-Fan, YANG Xue-Dong, HAN Ling. HEP NP, 2006, 30: 44 (in Chinese)(陈小凡, 杨学栋, 韩玲. 高能物理与核物理, 2006, 30: 44)2. Weiner R M. Phys. Rep., 2000, 327: 2493. Wiedemann U A, Heinz U. Phys. Rep., 1999, 319: 1454. Boal D H, Gelbke C K, Jennings B K. Rev. Mod. Phys.,1990, 62: 5535. Gyulassy M, Kau.man S K, Bossingham R R et al. Phys.Rev., 1979, C20: 22676. Pratt S. Phys. Rev. Lett., 1984, 53: 12197. CHEN X F, YANG X D, CHEN Z L et al. Chin. Phys.Lett., 2001, 18: 14528. CHEN X F, YANG X D, CHEN Z L et al. HEP NP,2002, 26: 955 (in Chinese)(陈小凡, 杨学栋, 陈志来等. 高能物理与核物理, 2002, 26:955)9. CHEN X F, CHEN Z L, YANG X D et al. HEP NP,2002, 26: 383 (in Chinese)(陈小凡, 陈志来, 杨学栋等. 高能物理与核物理, 2002, 26:383)10. CHEN X F, CHEN Z L, YANG X D et al. HEP NP,2001, 25: 1002 (in Chinese)(陈小凡, 陈志来, 杨学栋等. 高能物理与核物理, 2001, 25:1002)11. CHEN X F, CHEN Z L, YANG X D et al. HEP NP,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)12. CHEN X F. HEP NP, 1998, 22: 903 (in Chinese)(陈小凡. 高能物理与核物理, 1998, 22: 903)13. CHEN X F. HEP NP, 1998, 22: 424 (in Chinese)(陈小凡. 高能物理与核物理, 1998, 22: 424)14. CHEN X F, CHEN Z L, YANG X D et al. HIT Journal,2002, 2: 25815. Beavis D, CHU S Y, FUNG S Y et al. Phys. Rev., 1986,C34: 757
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CHEN Xiao-Fan. Test of Nonstatic Spherical Quark-Gluon Plasma by Two-Pion Interferometry[J]. Chinese Physics C, 2007, 31(2): 173-176.
CHEN Xiao-Fan. Test of Nonstatic Spherical Quark-Gluon Plasma by Two-Pion Interferometry[J]. Chinese Physics C, 2007, 31(2): 173-176. shu
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Received: 2006-01-17
Revised: 2006-09-05
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Test of Nonstatic Spherical Quark-Gluon Plasma by Two-Pion Interferometry

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

Abstract: A model of expanding pion sources in relativistic heavy ion collisions, when only hadronic matter is generated, is proposed. The two-pion correlation function at small relative momentum for such a model is obtained with two-pion interferometry at small relative momentum, and the relation between the real spatial parameter Re and the apparent spatial parameter Ra of the pion sources is given. The relation is different from the one when QGP is created. The difference can be used to test nonstatic, spherical quark-gluon plasma produced in relativistic heavy ion collisions. The relation also showes a scaling behavior.

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