Multiparticle Correlations, Factorial Cumulant Moments and Correlation Integrals in pp Collisions at 400 GeV/c

Wang Shaoshun; Zhang Jie; Xiao Chenguo; Ye Yunxiu; Zhong Yu

Chinese Physics C> 1995, Vol. 19> Issue(4) : 296-304

Multiparticle Correlations, Factorial Cumulant Moments and Correlation Integrals in pp Collisions at 400 GeV/c

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

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Abstract：
The pseudorapidity distribution of charged particles produced in pp collisions at 400GeV/c was measured by using LEBC films offered by CERN NA27 collaboration. The scaled factorial cumulant moments have been caloulated. Comparing with the results obtained from Monte Carlo events with the same single particle spectrum and no correlations, it is shown that for broad mixed multiplicity distributions, a significant part of K₂ is coming from the single particle fluctuation due to the fluctuating multiplicity. The factorial cumulant moments obtained by using the star correlation integrals reduce significantly the statistical errors of the higher order cumulant moments, but the essential conclusions remain unchanged.

References

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Wang Shaoshun, Zhang Jie, Xiao Chenguo, Ye Yunxiu and Zhong Yu. Multiparticle Correlations, Factorial Cumulant Moments and Correlation Integrals in pp Collisions at 400 GeV/c[J]. Chinese Physics C, 1995, 19(4): 296-304.

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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

Multiparticle Correlations, Factorial Cumulant Moments and Correlation Integrals in pp Collisions at 400 GeV/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: 1995-04-05

Abstract: The pseudorapidity distribution of charged particles produced in pp collisions at 400GeV/c was measured by using LEBC films offered by CERN NA27 collaboration. The scaled factorial cumulant moments have been caloulated. Comparing with the results obtained from Monte Carlo events with the same single particle spectrum and no correlations, it is shown that for broad mixed multiplicity distributions, a significant part of K₂ is coming from the single particle fluctuation due to the fluctuating multiplicity. The factorial cumulant moments obtained by using the star correlation integrals reduce significantly the statistical errors of the higher order cumulant moments, but the essential conclusions remain unchanged.