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

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

Chinese Physics C> 1995, Vol. 19> Issue(S2) : 133-142

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

Department of Modem Physics, University of Science and Technology of China, Hefei. Anhui, China

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Abstract：
The pseudorapidity distributions of charged particles produced in pp collisions at 400 GeV/c have been measured by using the LEBC films offered by the CERN NA27 Collaboration. The scaled factorial cumulant moments have been calculated. Compared with the results obtained from Monte Carlo events with the same single-particle spectrum and no correlations, a significant part of K₂ for broad mixed multiplicity distributions comes from single-particle density fluctuation owing 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.
- factorial moments ,
- factorial cumulant moments ,
- multiparticle correlations ,
- star correlation integral ,
- cumulant correlation function

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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(S2): 133-142.

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Received: 1994-03-21

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Supported by the National Natural Science Foundation of China.

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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

Department of Modem Physics, University of Science and Technology of China, Hefei. Anhui, China

Received Date: 1994-03-21

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: The pseudorapidity distributions of charged particles produced in pp collisions at 400 GeV/c have been measured by using the LEBC films offered by the CERN NA27 Collaboration. The scaled factorial cumulant moments have been calculated. Compared with the results obtained from Monte Carlo events with the same single-particle spectrum and no correlations, a significant part of K₂ for broad mixed multiplicity distributions comes from single-particle density fluctuation owing 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.