The Study of Particle Densities in Pseudorapidity Space in pp collisions at 400GeV/c

Wang Shaoshun; Xiao Chenguo; Zhang Jie; Xia Xiaojuan; Xiong Weijun; Zhong Yu

Chinese Physics C> 1994, Vol. 18> Issue(5) : 392-397

The Study of Particle Densities in Pseudorapidity Space in pp collisions at 400GeV/c

Department of Modern Physics, University of Science and Technology of China, Hefei, 230027

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Abstract：
The pseudorapidity distributions for charged particle multiplicity 4-24 produced in pp collisions at 400 GeV/c have been measured by using the LEBC films which were offered by CERN NA27 Collaboration. The regularity that the average maximum charged particle density in a selected pseudorapidity window (Δη=0.5 or 0.1) is rising linearly with the charged particle multiplicity was observed. There is a trend that the probability distributions of the maximum Particle density at large n become wider and flatter. But the event that the maximum particle density. is anomalously high was not observed.

References

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JACEE Collab., T. H. Burnett et al., Phys. Rev. Lett., 50 (1983) 2062.[2]NA22 Collab., M. Adamus et al., Phys. Lett., B185 (1987) 200.[3]UA1 Collab., C. Albajar et al., Nucl. Phys., B345 (1990) 1 .[4]A. Bialas and P. Peschanski,Nucl. Phys., B273 (1986), 703., B308 (1988) 857; Phys. Lett., B207 (1988) 59.[5]王绍舜等，高能物理与核物理，15 (1991)1058.[6]J. B. Singh and J. M. Kohli, Phys. Lett., B261 (1991) 156.[7]J. Dias de Deus, Phys. Lett., B194 (1987) 297.[8王韶舜等，高能物理与核物理，13(1989 )673.

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Wang Shaoshun, Xiao Chenguo, Zhang Jie, Xia Xiaojuan, Xiong Weijun and Zhong Yu. The Study of Particle Densities in Pseudorapidity Space in pp collisions at 400GeV/c[J]. Chinese Physics C, 1994, 18(5): 392-397.

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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

The Study of Particle Densities in Pseudorapidity Space in pp collisions at 400GeV/c

Corresponding author: Wang Shaoshun,

Department of Modern Physics, University of Science and Technology of China, Hefei, 230027

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1994-05-05

Abstract: The pseudorapidity distributions for charged particle multiplicity 4-24 produced in pp collisions at 400 GeV/c have been measured by using the LEBC films which were offered by CERN NA27 Collaboration. The regularity that the average maximum charged particle density in a selected pseudorapidity window (Δη=0.5 or 0.1) is rising linearly with the charged particle multiplicity was observed. There is a trend that the probability distributions of the maximum Particle density at large n become wider and flatter. But the event that the maximum particle density. is anomalously high was not observed.