Multiplicity distributions in quark and gluon jets toO(α) s

1986 ◽  
Vol 31 (1) ◽  
pp. 143-150 ◽  
Author(s):  
E. D. Malaza
Keyword(s):  
Gluon Jets ◽  
Multiplicity Distributions

ASYMPTOTIC SCALING IN QUARK AND GLUON JET MULTIPLICITY DISTRIBUTIONS IN NEXT-TO-LEADING ORDER QCD

1989 ◽  
Vol 04 (18) ◽  
pp. 4909-4918
Author(s):  
E. D. MALAZA
Keyword(s):  
Perturbative Qcd ◽  
Leading Order ◽  
Logarithmic Approximation ◽  
Gluon Jets ◽  
Multiplicity Distributions ◽  
Asymptotic Scaling

We study asymptotic scaling in quark and gluon jets in QCD beyond the leading most singular contributions of the double logarithmic approximation. We work to [Formula: see text] of perturbative QCD.

Multiplicity distributions in quark and gluon jets

1986 ◽  
Vol 267 (3-4) ◽  
pp. 702-713 ◽  
Author(s):  
E.D. Malaza ◽  
B.R. Webber
Keyword(s):  
Gluon Jets ◽  
Multiplicity Distributions

scholarly journals INFLUENCE OF STATISTICAL FLUCTUATIONS ON K/π RATIOS IN RELATIVISTIC HEAVY ION COLLISIONS

2001 ◽  
Vol 16 (07) ◽  
pp. 1227-1235 ◽  
Author(s):  
C. B. YANG ◽  
X. CAI
Keyword(s):  
Negative Binomial ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Relative Variance ◽  
Ion Collisions ◽  
Statistical Fluctuations ◽  
Binomial Distributions ◽  
The Mean ◽  
Multiplicity Distributions ◽  
Statistical Background

The influence of pure statistical fluctuations on K/π ratio is investigated in an event-by-event way. Poisson and the modified negative binomial distributions are used as the multiplicity distributions since they both have statistical background. It is shown that the distributions of the ratio in these cases are Gaussian, and the mean and relative variance are given analytically.

SOME CHARACTERISTICS OF THE COMPOUND MULTIPLICITY IN HIGH-ENERGY NUCLEUS–NUCLEUS INTERACTIONS

2011 ◽  
Vol 20 (08) ◽  
pp. 1735-1754 ◽  
Author(s):  
M. MOHERY ◽  
M. ARAFA
Keyword(s):  
Experimental Data ◽  
Impact Parameter ◽  
Mass Number ◽  
Multiplicity Distribution ◽  
High Energy ◽  
Projectile Nucleus ◽  
Target Mass ◽  
Compound Multiplicity ◽  
Multiplicity Distributions ◽  
The Impact

The present paper deals with the interactions of 22 Ne and 28 Si nuclei at (4.1–4.5)A GeV /c with emulsion. Some characteristics of the compound multiplicity nc given by the sum of the number of shower particles ns and grey particles ng have been investigated. The present experimental data are compared with the corresponding ones calculated according to modified cascade evaporation model (MCEM). The results reveal that the compound multiplicity distributions for these two reactions are consistent with the corresponding ones of MCEM data. It can also be seen that the peak of these distributions shifts towards a higher value of nc with increasing projectile mass. It may further be seen that the compound multiplicity distributions becomes broader with increasing target size and its width increases with the size of the projectile nucleus. In addition, it has been found that the MCEM can describe the compound multiplicity characteristics of the different projectile, target and the correlation between different emitted particles. The values of average compound multiplicity increase with increasing mass of the projectile. Furthermore, it is observed that while the value of 〈nc〉 depends on the mass number of the projectile Ap and the target mass number At, the value of the ratio 〈nc〉/D(nc) seems to be independent of Ap and At. The impact parameter is found to affect the shape of the compound multiplicity distribution. Finally, the dependence of the average compound multiplicity on the numbers of grey and black particles, and the sum of them, is obvious. The values of the slope have been found to be independent of the projectile nucleus.

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