Correlative Degree and Collective Sideward Flow of Final State Particles in High Energy Heavy Ion Collisions

  • A concept of copulative degree is Proposed in this Paper.Using the method of particle-group correlation's unction,the effects of the Particles with different correlative degrees on collective sideway now are studied for 1.2A GeV Ar+BaI2 collisions at the Bevalac stream chamber.Our studies indicate that correlative degree is an important parameter on describing collective sideward flow Properties. The minority of correlative Particles(or fragmentS) with larger correlative degrees can produce the effect arising from the collective sideward now, but the effect arising from high-order collective flow correlations can not be dominated by these minority of Particles (or ragments).It is results from the collective contribution of the majority of collective particles(or fragments) with various correlative degrees.
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  • [1] Stocker H, Greiner W Phys. Rep,1986,137:277;Bertsch G F, Gupta S Das Phys. Rep, 1988, 160:189; Kampert K H ,J. Phys, 1989, G15:691; Wang S et al. Phys. Rev Lett, 1995, 14:2646 2 Gyulassy M , Fraenkel K A, Stceker H Phys.Lett,1982,110B:185 3 Danielwicz P, Gyulassy M.Phys,Lett,1983,129B:2834 Denielwicz P, Odyniec G.Phys. Lett.1985, 157B: 1465 Doss K G R et al. Phys. Rev Lett, 1986, 57:3026 Beckmann P et al.Mod.Phys.Lett, 1987, A2:163 7 Liu Qingjun et al.High Energy Phys. and NucL Phys.(in Chinese),1992,16:801 (刘庆军等.高能物理与核物理,1992,16:801)8 Liu Qingjun et al. High Energy Phys.and Nucl.Phys.(in Chinese),1993,17:912 (刘庆军等.高能物理与核物理,1993,17:912) 9 Welke G M et al. Phys. Rev. 1988, C38:210110 Cutbrod H H et al.Phys.Lett, 1989, 216B:26711 Wang S et al.Phys. Rev.1991, C44:109112 Wang Shan et al.High Energy Phys. and NucL. Phys.(in Chinese),1990, 14:907 (王山等.高能物理与核物理,1990,14:907)13 Jiang J et al.Phys、 Rev Lett, 1992,68:2739 14 Liu Yiming et al.High Energy Phys.and NucL Phys,1994,18:16715 Liu Yiming et al.High Ehergy Phys.and Nucl、Phys.(in Chinese),1994,18:511 (刘亦铭等.高能物理与核物理,1994,18:511) 16 Zhang Weigang. High Energy Phys. and Nucl Phys.(in Chinese), 1997, 21:911 (张伟刚.高能物理与核物理,1997,21:911) 17 Zhang Weigang. Guangxi Sciences, 1997, 4:251 (张伟刚.广西科学,1997,4:251) 18 Huo Lei et al. High Energy Phys. and Nucl Phys.(in Chinese), 1996, 20:311 (霍雷等.高能物理与核物理,1996,20;311) 19 Huo Lei et al.High Energy Phys.and Nucl.Phys.(in Chinese),1996,20:812 (霍雷等.高能物理与核物理,1996,20:812)20 Beavis D et al. Phys. Rev, 1986, C33:1113 21 Cugnon J et al. Nucl Phys, 1982, A379:553 22 Bertsch G F, Gupta S Das. Phys.Rep, 1988,160:189
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Zhang Weigang. Correlative Degree and Collective Sideward Flow of Final State Particles in High Energy Heavy Ion Collisions[J]. Chinese Physics C, 1999, 23(4): 367-374.
Zhang Weigang. Correlative Degree and Collective Sideward Flow of Final State Particles in High Energy Heavy Ion Collisions[J]. Chinese Physics C, 1999, 23(4): 367-374. shu
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Received: 1998-02-27
Revised: 1900-01-01
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Correlative Degree and Collective Sideward Flow of Final State Particles in High Energy Heavy Ion Collisions

    Corresponding author: Zhang Weigang,
  • Dean's Office Of Guangxi Institute of Technology, Liuzhou 545005

Abstract: A concept of copulative degree is Proposed in this Paper.Using the method of particle-group correlation's unction,the effects of the Particles with different correlative degrees on collective sideway now are studied for 1.2A GeV Ar+BaI2 collisions at the Bevalac stream chamber.Our studies indicate that correlative degree is an important parameter on describing collective sideward flow Properties. The minority of correlative Particles(or fragmentS) with larger correlative degrees can produce the effect arising from the collective sideward now, but the effect arising from high-order collective flow correlations can not be dominated by these minority of Particles (or ragments).It is results from the collective contribution of the majority of collective particles(or fragments) with various correlative degrees.

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