INDEPENDENCE OF MULTIPLICITY MOMENTS ON ENERGY,TARGET MASS AND RAPIDITY WINDOW IN NUCLEUS-NUCLEUS COLLISIONS

ZHUANG Peng-Fei; LIU Lian-Shou

Chinese Physics C> 1990, Vol. 14> Issue(5) : 427-434

INDEPENDENCE OF MULTIPLICITY MOMENTS ON ENERGY,TARGET MASS AND RAPIDITY WINDOW IN NUCLEUS-NUCLEUS COLLISIONS

ZHUANG Peng-Fei ^, ,
LIU Lian-Shou

Institute of Particle Physics,Hua-Zhong Normal University,Wuhan

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Abstract：
The independence or approximate independence of the multiplicity moments on energy,target mass and rapidity window in high enrgy nucleus-nucleus are analyzed.It is pointed out that all of these properties are due to the nuclear geometry.It is proved under very general conditions that,when the target mass is not extremely light and the rapidity window not very narrow,the normalized moments of the multiplicity are approximately equal to that of the number of participating nucleons.The calculated results for both minimum bias and central events agree well with the experimental data.

References

[1]

A. Bambezger et al. (NA35), Phys. Lett., B205(1988), 583.[2] M. I. Adamovich et al. (EMU01), Phys. Lett., B223(1989), 262.[3] R. C. Hwa, OITS 385(1988).[4] J. Schukraft, XIX International Symposium on Multiparticle Dynamics, edited by D.Schiff and J.Tran Thanh Van, (1988), 537.[5] 赵维勤，刘波，高能物理与核物理，13(1989)，285.[6] B. Andersson et al., LUIP 8808(1988).[7] A. Capella, J. Tran Thanh Van, Nucl. Phys., A461(1987), 501c.[8] B. Andersson, Nucl. Phys., A461(1987), 513c.[9] Liu Lianshou, Meng Tachung and Peng Hongan, Phys. Rev., D37(1988), 3327; Cai Xu, Chao Weiqin and Meng Tachung, Phys. Rev.,D36(1987), 2009.[10] 例如见:W. M. Morse et al., Phys. Rev., DI5(1977), 66; J. Whitmore, Phys. Rep., C10(1974), 273.[11] G. Baym, Nucl. Phys., A461(1987); 199c.[12] Bo Nilsson-Almqvist and E. Stenlund, Compuxer Physics Commurticationr, 43(1987), 387.[13] L. Van Hove, TERN-TH. 5069/1988.[14] 吴元芳，刘连寿，HZPP 8905(1989).

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ZHUANG Peng-Fei and LIU Lian-Shou. INDEPENDENCE OF MULTIPLICITY MOMENTS ON ENERGY,TARGET MASS AND RAPIDITY WINDOW IN NUCLEUS-NUCLEUS COLLISIONS[J]. Chinese Physics C, 1990, 14(5): 427-434.

ZHUANG Peng-Fei and LIU Lian-Shou. INDEPENDENCE OF MULTIPLICITY MOMENTS ON ENERGY,TARGET MASS AND RAPIDITY WINDOW IN NUCLEUS-NUCLEUS COLLISIONS[J]. Chinese Physics C, 1990, 14(5): 427-434. 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

INDEPENDENCE OF MULTIPLICITY MOMENTS ON ENERGY,TARGET MASS AND RAPIDITY WINDOW IN NUCLEUS-NUCLEUS COLLISIONS

ZHUANG Peng-Fei ^,
LIU Lian-Shou

Corresponding author: ZHUANG Peng-Fei,

Institute of Particle Physics,Hua-Zhong Normal University,Wuhan

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1990-05-05

Abstract: The independence or approximate independence of the multiplicity moments on energy,target mass and rapidity window in high enrgy nucleus-nucleus are analyzed.It is pointed out that all of these properties are due to the nuclear geometry.It is proved under very general conditions that,when the target mass is not extremely light and the rapidity window not very narrow,the normalized moments of the multiplicity are approximately equal to that of the number of participating nucleons.The calculated results for both minimum bias and central events agree well with the experimental data.