Leading Particle Effect and the Two-Cylinder Model in Nucleus-Nucleus Collisions over an Energy Range from AGS to RHIC

  • Based on our previous work, leading particle effects in nucleus-nucleus collisions at the Alternating Gradient Synchrotron (AGS) and Relativistic Heavy Ion Collider (RHIC) energies are uniformly analyzed by using the two-cylinder model. The results show that the differences in the (pseudo)rapidity distributions of the charged particles in nucleus-nucleus collisions with different centralities are mainly affected by the contributions of leading particles. If the contribution of leading particles is neglected, the charged particle (pseudo)rapidity distributions in nucleus-nucleus collisions with different centralities would have the same shape.
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  • [1] . Westfall G D, Gosset J, Johansen O J et al. Phys. Rev.Lett., 1976, 37: 1202-12052. D'innocenzo A, Ingrosso G, Rotelli P. Nuovo Cimento,1980, A55: 417-4363. LIU Fu-Hu. Acta Phys. Sin. (Overseas edition), 1998, 7:321-3264. LIU Fu-Hu, Panebratsev Y A. Nucl. Phys., 1998, A641:379-3855. LIU Fu-Hu, Panebratsev Y A. Phys. Rev., 1999, C59:1193-11956. LIU Fu-Hu, Panebratsev Y A. Phys. Rev., 1999, C59:1798-18017. LIU Fu-Hu. Phys. Rev., 2002, C66: 047902-1-047902-38. LIU Fu-Hu. Phys. Lett., 2004, B583: 68-729. LIU Fu-Hu, ZHANG Dong-Hai, DUAN Mai-Ying. Euro.Phys. Lett., 2003, 61: 736-74110. LIU Fu-Hu. Acta Phys. Pol., 2004, 35: 2429-243711. Wong C Y. Introduction to High-Energy Heavy-Ion Colli-sions. Singapore: World Scienti c, 1994. 24-2512. Back B B, Betts R R, CHANG J et al (E917 Collabora-tion). Phys. Rev., 2002, C66: 054901-1-054901-1013. Bearden I G, Beavis D, Besliu C et al (BRAHMS Collabo-ration). Phys. Rev. Lett., 2002, 88: 202301-1-202301-414. MENG Cai-Rong, LI Xiao-Lin, DUAN Mai-Ying. HEP NP, 2004, 28: 1165-1169(in Chinese)(孟彩荣,李晓琳,段麦英.高能物理与核物理2004,28:1165-1169)15. JIANG Zhi-Jin, LI Qiang. HEP NP, 2004, 28: 846-849(in Chinese) (姜志进,李强.高能物理与核物理,2004, 28: 846-849)16. YUAN Xian-Bao, FENG Sheng-Qin. HEP NP, 2005, 29:371-375(in Chinese)(衰显宝,冯笙琴.高能物理与核物理,2005, 29: 371-37517. YONG Gao-Chan, LI Bao-An, ZUOWei. HEP NP, 2005,29: 366-370(in Chinese)(雍高产,李保安,左维.高能物理与核物理,2005, 29: 366-370)18. FENG Ao-Qi, WU Yuan-Fang. HEP NP, 2005, 29: 766-769(in Chinese)(冯傲奇,吴元芳.高能物理与核物理,2005, 29: 766-769)
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LIU Fu-Hu. Leading Particle Effect and the Two-Cylinder Model in Nucleus-Nucleus Collisions over an Energy Range from AGS to RHIC[J]. Chinese Physics C, 2006, 30(7): 638-641.
LIU Fu-Hu. Leading Particle Effect and the Two-Cylinder Model in Nucleus-Nucleus Collisions over an Energy Range from AGS to RHIC[J]. Chinese Physics C, 2006, 30(7): 638-641. shu
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Received: 2005-10-20
Revised: 2006-02-14
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Leading Particle Effect and the Two-Cylinder Model in Nucleus-Nucleus Collisions over an Energy Range from AGS to RHIC

    Corresponding author: LIU Fu-Hu,
  • Department of Physics, Shanxi University, Taiyuan 030006, China

Abstract: Based on our previous work, leading particle effects in nucleus-nucleus collisions at the Alternating Gradient Synchrotron (AGS) and Relativistic Heavy Ion Collider (RHIC) energies are uniformly analyzed by using the two-cylinder model. The results show that the differences in the (pseudo)rapidity distributions of the charged particles in nucleus-nucleus collisions with different centralities are mainly affected by the contributions of leading particles. If the contribution of leading particles is neglected, the charged particle (pseudo)rapidity distributions in nucleus-nucleus collisions with different centralities would have the same shape.

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