Study on the Feature of Longitudinal Collective Flow Distribution and Nuclear Stopping at RHIC

YUAN Xian-Bao; FENG Sheng-Qin

Chinese Physics C> 2005, Vol. 29> Issue(4) : 371-375

Study on the Feature of Longitudinal Collective Flow Distribution and Nuclear Stopping at RHIC

YUAN Xian-Bao ,
FENG Sheng-Qin ^,

Dept of Physics,Science College,Three Gorges University,Yichang 443002,China

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Abstract：
The net–proton distribution features at rhic have been analyzed by using non–uniform flow model in this paper. it is found that the system produced at the rhic energy region has stronger non–uniform feature than at the ags and sPs energy regions, which means that nuclei at rhic energy region is much more transparent. it is shown that our analysis relates closely to the study of nuclear stopping of experiment. and then, the proton,anti–proton and net–proton distributions are studied , respectively. this investigation help us to understand the feature of particle stopping in the newest rhic experiment.

References

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. Gaardhje J J, Arsene I, Bearden I G et al ( BRAHMS Collaboration) .Nucl. Phys. , 2004, A734: 13; Bearden I G et al( BRAHMS Collaborat ion) . Phys. Rev. Let t. , 2004, 93 : 1023012. Bearden I G et al ( BRAHMS Collaboration) . Phys. Lett . , 2001, B523:2273. FENG Sheng-Qin, LIU Feng, LIU Lian-Shou. Phys. Rev. , 2001,C63: 0149014. Back B B et al ( E917 Collaboration ) . Phys. Rev. Lett. , 2001, 86:19705. Ahle L et al( E802 Collaboration) . Phys. Rev. , 1999, C60: 0649016. Barrette J et al( E877 Collaboration) . Phys. Rev. , 2000, C62: 0249017. Appelshauser H et al ( NA49 Collaborat ion) . Phys. Rev. Lett . , 1999,82 : 24718. Braun-Munzinger P, Stachel J, Wessels J P, XU N.Phys. Lett . , 1995,B344: 43-489. Videbeck F et al . Nucl. Phys. , 1995, A590: 249c10. Wienold T et al. Nucl . Phys. , 1996, A610:76c11. Schnedermann E, Sollfrank J, Heinz U. Phys. Rev. , 1993, C48: 2462;Schnedermann E, Heinz U. Phys. Rev. , 1994, C50: 167512. Christiansen P.Nucl. Phys. , 2003, A721: 239c-242c

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YUAN Xian-Bao and FENG Sheng-Qin. Study on the Feature of Longitudinal Collective Flow Distribution and Nuclear Stopping at RHIC[J]. Chinese Physics C, 2005, 29(4): 371-375.

YUAN Xian-Bao and FENG Sheng-Qin. Study on the Feature of Longitudinal Collective Flow Distribution and Nuclear Stopping at RHIC[J]. Chinese Physics C, 2005, 29(4): 371-375. shu

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Received: 2004-08-11
Revised: 2004-09-28

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Study on the Feature of Longitudinal Collective Flow Distribution and Nuclear Stopping at RHIC

YUAN Xian-Bao
FENG Sheng-Qin ^,

Corresponding author: FENG Sheng-Qin,

Dept of Physics,Science College,Three Gorges University,Yichang 443002,China

Received Date: 2004-08-11
Accepted Date: 2004-09-28
Available Online: 2005-04-05

Abstract: The net–proton distribution features at rhic have been analyzed by using non–uniform flow model in this paper. it is found that the system produced at the rhic energy region has stronger non–uniform feature than at the ags and sPs energy regions, which means that nuclei at rhic energy region is much more transparent. it is shown that our analysis relates closely to the study of nuclear stopping of experiment. and then, the proton,anti–proton and net–proton distributions are studied , respectively. this investigation help us to understand the feature of particle stopping in the newest rhic experiment.