Analysis of Multi-Particle Production at RHIC by Two-Source Statistical Model

  • The data of multi particle production in SNN=130 GeV Au+Au collisions are analyzed by two source statistical model. It is found that in this reaction the two sources (inner source and outer source) are identical. They have the same temperature, volume, particle density and other thermodynamic quantities. Besides, the results of two source model are identical with that of single source model (the total volume of the two sources equals the volume of single source). The identities between two sources and between two models are due to the particles being measured in a limited central rapidity region. The SNN=130 GeV Au+Au collision has large rapidity region, while data are taken from a small pseudo-rapidity region, η<0.5. In the region, the particles are uniformly distributed as a single source. Comparing to the inner source in 158 A GeV/c Pb+Pb collision, which has a small and hot inner source surrounded by a larger and cooler outer source, the temperature is at least 15MeV higher and the volume is at least two times larger. The RHIC can provide a hot and large inner source that may be formed in the early stage of hadronization from QGP and may have important physical content behind. We suggest to make synchronous measurement in the outer region, e.g. 3<y<4, so as to make comparison.
  • 加载中
  • [1] . Aderson B et al.Nucl.Phys.,1987,281:2862. SA Ben-Hao,TAI An,LU Zhong-Dao.Phys.Rev.,1995,C52:20693. SA Ben-Hao,TAI An,LU Zhong-Dao.High Energy Phys.and Nucl.Phys.,1995,19:1019(in Chinese) (萨本豪,台安,陆中道.高能物理与核物理,1995,19:1019)4. WANG X N ,Gyulassy M .Phys.Rev.,1991,D44:3501;WANG X N ,Gyulassy M .Comp.Phys.Comm.,1994,83:3075. B#966;ggild H et al(NA44 Collab.).Phys.Letts.,1995,B349:386 6. Braun Munzinger P ,Stachel J,Wessels J P et al.Phys.Letts.,1996,B365:1;Braun Munzinger P ,Heppe I,Stachel J.Phys.Letts.,1999,B465:15 7. Yen G D ,Gorenstein M I,Greiner W et al.Phys.Rev.,1997,C56:2210;Yen G D ,Gorenstein M I.Phys.Rev.,1999,C59:27888. Cleymans J,Redlich K .Phys.Rev.,1999,C60:0549089. LU Zhong-Dao,Neda Z ,Csernai L et al.High Energy Phys.and Nucl.Phys.,1997,22:910(in Chinese) (陆中道,NedaZ ,Csernai L等.高能物理与核物理,1997,22:910)10. ZHANG Z Y ,YU Y W ,CHING C R et al.Phys.Rev.,2000,C61:065204 11. LU Zhong-Dao,SA Ben-Hao,Am and Faessler et al.High Energy Phys.and Nucl.Phys.,2002,26:501(in Chinese) (陆中道,萨本豪,Amand Faesslei等.高能物理与核物理,2002,26:501)12. LU Zhong-Dao,Amand Faessler,Fuchs C et al.J.Phys.G :Nucl.Part.Phys.,2002,28:2127;Phys.Rev.,C ,to be published 13. LU Zhong-Dao,Amand Faessler,Fuchs C et al.Nonequilibrium and Nonlinear Dynamics in Nuclear and other Finite System.In:Zhu xiaLi,Ke Wu,Xi zhen Wu,Enguang Zhao,Fumihiko Sakata.Beijing:American Institute of Physics—Aip Conference Proceedings597,2001.13614. Rafelski J.Phys.Lett.,1991,B262:333 15. Bravina L V ,Zabrodin E E ,Gorenstein M I et al.Phys.Rev.,1999,C60:024904 16. Braun Munzinger P ,Magestro D ,Redlish K et al.arXiv:hep ph/0105229v231 Aug2001 17. Back B B et al.Phys.Rev.Lett.,2000,85:310018. Back B B et al(PHOBOX Collab.).arXiv:hep ex/01054316 May200119. Wroblewski A .Acta Physica Polonica,1985,B16:379
  • 加载中

Get Citation
LU Zhong-Dao, SA Ben-Hao and Amand Faessler. Analysis of Multi-Particle Production at RHIC by Two-Source Statistical Model[J]. Chinese Physics C, 2002, 26(11): 1166-1171.
LU Zhong-Dao, SA Ben-Hao and Amand Faessler. Analysis of Multi-Particle Production at RHIC by Two-Source Statistical Model[J]. Chinese Physics C, 2002, 26(11): 1166-1171. shu
Milestone
Received: 2001-12-26
Revised: 1900-01-01
Article Metric

Article Views(2867)
PDF Downloads(572)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Analysis of Multi-Particle Production at RHIC by Two-Source Statistical Model

    Corresponding author: LU Zhong-Dao,
  • China Institute of Atomic Energy, Beijing 102413, China2 The China Center of Advance Science and Technology CCAST, Beijing 100080, China3 Institute for Theoretical Physics, University of Tuebingen, D 72076 Tubingen, Germany4 Institute for Nuclear Physics, Moscow State University, 119899 Moscow, Russia

Abstract: The data of multi particle production in SNN=130 GeV Au+Au collisions are analyzed by two source statistical model. It is found that in this reaction the two sources (inner source and outer source) are identical. They have the same temperature, volume, particle density and other thermodynamic quantities. Besides, the results of two source model are identical with that of single source model (the total volume of the two sources equals the volume of single source). The identities between two sources and between two models are due to the particles being measured in a limited central rapidity region. The SNN=130 GeV Au+Au collision has large rapidity region, while data are taken from a small pseudo-rapidity region, η<0.5. In the region, the particles are uniformly distributed as a single source. Comparing to the inner source in 158 A GeV/c Pb+Pb collision, which has a small and hot inner source surrounded by a larger and cooler outer source, the temperature is at least 15MeV higher and the volume is at least two times larger. The RHIC can provide a hot and large inner source that may be formed in the early stage of hadronization from QGP and may have important physical content behind. We suggest to make synchronous measurement in the outer region, e.g. 3<y<4, so as to make comparison.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return