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《中国物理C》(英文)编辑部
2024年10月30日

Pseudorapidity Distribution of Shower Particles in 24Mg-Emulsion Collisions at 4.5A GeV/c

  • The pseudorapidity distribution of shower particles produced in the 24Mg-emulsion collisions at 4.5A GeV/c is reported in this paper. The dependences of the distribution width and the peak position on the target size are observed.The pseudorapidity distribution of shower particles for the events with low target multiplicity (light target) is narrower than that with high target multiplicity (heavy target). The maximum probability pseudorapidity for light target is greater than that for heavy target. The experimental data is analyzed by using the cylinder model suggested by Liu et al. The Monte Carlo results based on Liu's cylinder model are approximately in agreement with the experimental tendency and fluctuation.
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  • [1] . Andronic A, Stoicea G, Petrovici M et al( FOPI Collaboration). Nucl.Phys., 2001, A679(3-4): 765-7922. Abreu M C, Alessandro B, Alexa C et al( NA50 Collaboration ). Phys. Lett., 2002, B530(1-4): 33-423. Abreu M C, Alessandro B, Alexa C et al (NA50 Collaboration). Phys. Lett., 2002, B530(1-4): 43-554. Back B B, Baker M D, Barton D S et al (PHOBOS Collaboration). Phys. Rev. Lett., 2001, 87(10): 1023015. Bearden I G, Beavis D, Besliu C et al( BRAHMS Collaboration) . Phys.Rev. Lett., 2002, 88(20): 2023016. ZHANG Jing-Bo, HUO Lei, ZHANG Wei-Ning et al. HEP NP, 2002, 26(4): 305-308(in Chinese)(张景波, 霍雷, 张卫宁等. 高能物理与核物理, 2002, 26(4): 305—308)7. ZHANG Jing-Bo, YANG Jie, HUO Lei et al. HEP NP, 2002, 26(8): 851-854(in Chinese)(张景波, 杨杰, 霍雷等. 高能物理与核物理, 2002, 26(8): 851—854)8. Kharzeev D, Levin E. Phys. Lett., 2001, B523(1-2): 79-879. Hirano T. Phys. Rev., 2002, C65(1): 011901-1-011901-510. WANG X N, Gyulassy M. Phys. Rev., 1991, D44(11): 3501-351611. PANG Y, Schlagel T J, Kahana S H. Nucl. Phys., 1992, A544(1-2): 435-43812. Werner K. Phys. Rep., 1993, 232(2-5): 87-29913. LU Zhong-Dao, SA Ben-Hao, Faessler A et al. HEP NP, 2002, 26(5): 501-506(in Chinese)(陆中道, 萨本豪,FaesslerA等. 高能物理与核物理, 2002, 26(5): 501—506)14. LU Zhong-Dao, SA Ben-Hao, Faessler A et al. HEP NP, 2002, 26(11): 1166-1171(in Chinese)(陆中道, 萨本豪, FaesslerA等. 高能物理与核物理, 2002, 26(11): 1166—1171)15. LIU Fu-Hu. Phys. Rev., 2000, C62( 2), 024613-1-024613-316. LIU Fu-Hu. Europhys. Lett., 2003, 63(2): 193-19917. LIU Fu-Hu. Acta Physica Sinica (Overseas Edition., 1998, 7(5): 321-32618. LIU Fu-Hu, Panebratsev Y A. Nucl. Phys., 1998, A641(4): 379-38519. LIU Fu-Hu, Panebratsev Y A. Phys. Rev., 1999, C59(2): 1193-119520. LIU Fu-Hu, Panebratsev Y A. Phys. Rev., 1999, C59(3): 1798-180121. LIU Fu-Hu. Phys. Lett., 2004, B583(1): 68-7222. LIU Fu-Hu, YIN Xin-Yi, TIAN Jun-Long et al. Phys. Rev.,2004, C69(3): 034905-1-034905-523. Adamovich M I, AggarwalM M, Alexandrov Y A et al( EMU01 Collaboration).Z. Phys., 1992, C56(12): 509-51424. Adamovich M I, AggarwalM M, Alexandrov Y A et al( EMU01 Collaboration). Phys. Lett., 1995, B352(3-4): 472-47825. Wong C Y. Introduction to High-Energy Heavy-Ion Collisions. Singapore: World Scientific, 1994. 24-2526. LIU Fu-Hu. Phys. Rev., 2001, D63(3): 032001-1-032001-4
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MENG Cai-Rong, LI Xiao-Lin and DUAN Mai-Ying. Pseudorapidity Distribution of Shower Particles in 24Mg-Emulsion Collisions at 4.5A GeV/c[J]. Chinese Physics C, 2004, 28(11): 1165-1169.
MENG Cai-Rong, LI Xiao-Lin and DUAN Mai-Ying. Pseudorapidity Distribution of Shower Particles in 24Mg-Emulsion Collisions at 4.5A GeV/c[J]. Chinese Physics C, 2004, 28(11): 1165-1169. shu
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Received: 2004-04-01
Revised: 1900-01-01
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Pseudorapidity Distribution of Shower Particles in 24Mg-Emulsion Collisions at 4.5A GeV/c

    Corresponding author: MENG Cai-Rong,
  • Department of Physics,Xinzhou Teachers University,Xinzhou 034000,China2 Institute of Modern Physics,Shanxi Teachers University,Linfen 041004,China

Abstract: The pseudorapidity distribution of shower particles produced in the 24Mg-emulsion collisions at 4.5A GeV/c is reported in this paper. The dependences of the distribution width and the peak position on the target size are observed.The pseudorapidity distribution of shower particles for the events with low target multiplicity (light target) is narrower than that with high target multiplicity (heavy target). The maximum probability pseudorapidity for light target is greater than that for heavy target. The experimental data is analyzed by using the cylinder model suggested by Liu et al. The Monte Carlo results based on Liu's cylinder model are approximately in agreement with the experimental tendency and fluctuation.

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