Strong Stopping of Nuclear System at AGS Energy

Song Guang; Sa Benhao; Wang Zhongqi; Lu Zhongdao; Zhang Xiaoze; Zheng Yuming

Chinese Physics C> 1995, Vol. 19> Issue(2) : 172-177

Strong Stopping of Nuclear System at AGS Energy

China Institute of Atomic Energy,Beijing 102413

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Abstract：
A simple relativistic hadronic cascade model is given and then applied to simulate the reaction of Si(14.6AGeV/c)+Au.The △ resonance effects on the rapidity distributions of proton and pion and on the transverse mass distribution of proton are investigared.In this model,the longitudinal momentum of scattered particle is given by stopping law while the transverse momentum is sampled from exponential or Guassian distribution.The theoretical results are in a good agreement with the E802 new results and with the E810(E814)data.This indicates that that introduction of △ resonance is necessary for the better description of the reaction process．It is also convinced that the strong nuclear stopping at AGS energy is no doubt any more.

References

[1]

E802Collab,T.Abbott et al,Phys.Rev.Lett.,64（1990）847;66（1991）1567.[2]E810Collab,S.E.Eiseman et al,Phys.Lett.,B292（1992）10.[3]S.Chapman,M.Gyulassy,Phys.Rev.Lett.,67（1991）1210;Phys.Rev.,C45（1992）2925.[4]Wang Zhongqi et al.,Chinese.Phys.Lett.,10（1993）468.[5]Y.Kitazoe,M.Sano,H.Toki et al,Phys.Lett.,B166（1986）35.[6]Y.Pang,T.J.Schlagel,S.H.Kahana,Phys.Rev.Lett.,68（1992）2743;69（1992）3290.[7]G.F.Bertsch,S.Das Gupta,Phys.Rep.,160（1988）189.[8]Wong Cheukyin,Lu Zhongdao,Phys.Rev.,D39（1989）2606.

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Song Guang, Sa Benhao, Wang Zhongqi, Lu Zhongdao, Zhang Xiaoze and Zheng Yuming. Strong Stopping of Nuclear System at AGS Energy[J]. Chinese Physics C, 1995, 19(2): 172-177.

Song Guang, Sa Benhao, Wang Zhongqi, Lu Zhongdao, Zhang Xiaoze and Zheng Yuming. Strong Stopping of Nuclear System at AGS Energy[J]. Chinese Physics C, 1995, 19(2): 172-177. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Strong Stopping of Nuclear System at AGS Energy

Corresponding author: Song Guang,

China Institute of Atomic Energy,Beijing 102413

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1995-02-05

Abstract: A simple relativistic hadronic cascade model is given and then applied to simulate the reaction of Si(14.6AGeV/c)+Au.The △ resonance effects on the rapidity distributions of proton and pion and on the transverse mass distribution of proton are investigared.In this model,the longitudinal momentum of scattered particle is given by stopping law while the transverse momentum is sampled from exponential or Guassian distribution.The theoretical results are in a good agreement with the E802 new results and with the E810(E814)data.This indicates that that introduction of △ resonance is necessary for the better description of the reaction process．It is also convinced that the strong nuclear stopping at AGS energy is no doubt any more.