Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-12-23
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 8 figures (in gif), talk given at XXXI International Symposium on Multiparticle Dynamics, Sept 1-7, 2001, Datong Chin
Scientific paper
The self-affine analysis and erraticity analysis of pseudorapidity gaps are performed for the data of 400GeV/$c$ pp collisions. The self-affine analysis has been shown to exhibit a better scaling behavior. The self-affine multifractal dimensions and multifractal spectrum have been obtained. The simulated results using FRITIOF program can not reproduce the scaling behavior. The analysis of event-to-event fluctuations has been performed. The increase of event-space moments $C_{p,q}(M)$ with decreasing phase-space scale is dominated by the statistical fluctuations. The erraticity analysis based on measuring the pseudorapidity gaps is also performed. The entropy-like quantities $S_q$ and $\Sigma_q$ deviate from 1 significantly, implying that both of them are useful to serve as effective measures of erraticity in multiparticle production. The ln${S_q}$ versus $q$ has a quite linear behavior, but the ln${\Sigma_q}$ versus $q$ has only an approximate linear behavior. The FRITIOF simulated results follow the same scaling behavior, but the deviations from the experimental data are rather large.
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