Qualitative difference between the dynamics of particle production in soft and hard processes of high energy collisions

Liu, Feng; Liu, Fuming; Lianshou, Liu

doi:10.1103/physrevd.59.114020

Cited by 19 publications

(13 citation statements)

References 17 publications

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“…This means that the results from these two generators are qualitatively the same, showing that the full sample is self-similar (isotropic) fratal. This is just as expected [10]. Quantitatively, they have slightly different fractal dimension.…”

supporting

confidence: 60%

“…A Monte Carlo study for e + e − collisions at 91.2 GeV confirms this assertion [10]. The dynamical fluctuations are approximately isotropic in the 3-D phase space, the corresponding Hurst exponents being H ptϕ = 1.18 ± 0.03, H ypt = 0.95 ± 0.02, H yϕ = 1.11 ± 0.02.…”

supporting

confidence: 56%

“…It is found recently [10] that the dynamical fluctuations in the hadronic systems from these two processes are qualitatively different -the former is anisotropic in the longitudinal-transvere plane and isotropic in the transverse planes while the latter is isotropic in three dimensional phase space. This observation inspired us to think that the dynamical-fluctuation property may provide a hint for the determination of the scale of the appearance of visible jets.…”

mentioning

confidence: 99%

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Monte Carlo study of the dynamical-fluctuation property of the hadronic system inside jets

Lianshou

Chen

2001

Phys. Rev. D

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A study of the dynamical fluctuation property of jets is carried out using Monte Carlo method. The results suggest that, unlike the average properties of the hadronic system inside jets, the anisotropy of dynamical fluctuations in these systems changes abruptly with the variation of the cut parameter y cut . A transition point exists, where the dynamical fluctuations in the hadronic system inside jet behave like those in soft hadronic collisions, i.e. being circular in the transverse plan with repect to dynamical fluctuations. This finding obtained from Jetset and Herwig Monte Carlo is encouraged to be checked by experiments.PACS number: 13.85 Hd

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supporting

confidence: 60%

supporting

confidence: 56%

mentioning

confidence: 99%

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Monte Carlo study of the dynamical-fluctuation property of the hadronic system inside jets

Lianshou

Chen

2001

Phys. Rev. D

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“…However, the anomalous scaling of NFM in e + e − collisions closely obeyed the scaling properties in Eq. (2) for isotropic partition of three-dimensional phase space [14,15,16,17]. In our work we applied a self-similar analysis to heavy ion collisions using the Multi-phase Transport (AMPT) model [18] to generate central Au-Au collision events at √ s NN = 200 GeV.…”

Section: Introductionmentioning

confidence: 99%

Scaling properties of multiplicity fluctuations in heavy-ion collisions simulated by AMPT model

et al. 2013

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Three dimensional, as well as one-and two-dimensional, studies of multiplicity fluctuation are performed using AMPT model to generate central Au-Au collision events at √ sNN = 200 GeV. Two-and three-dimensional normalized factorial moments in rapidity, transverse momentum and azimuthal angle are found to exhibit power-low scaling when partitioning with the same number of bins in each direction, indicating that the fluctuation are isotropic, i.e the fractality is self-similar in multiparticle production of central Au-Au collisions. Further, we measured the parameter ν which it characterizes the intermittency indices derived in particular analysis. It is found that our model result νyϕp t = 1.86 ± 0.07 is larger than ν = 1.304, which is the value of Ginzburg-Landau type of phase transition. We also explored the intermittent or fluctuational dependence on the transverse momentum. The result shows that the intermittency or fluctuation increase rapidly with the increasing of transverse momentum.

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“…In contrast to the linear log-log plots of the scaling behaviour (3) observed in e + e − annihilation, three-dimensional factorial moments in hadronic collisions scale only approximately; they rise more quickly than the power law (3). This difference is attributed to the difference in dynamics between soft and hard processes that leads to isotropic dynamical fluctuations in e + e − annihilation and to anisotropic ones in hadron-hadron collisions [37].…”

Section: Factorial Moments and Cumulants In Hadronic Collisonsmentioning

confidence: 99%

Intermittency and correlations in hadronic Z $^0$ decays

Abbiendi¹,

Ackerstaff²,

Alexander³

et al. 1999

Eur. Phys. J. C

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Abstract.A multidimensional study of local multiplicity fluctuations and multiparticle correlations of hadrons produced in Z 0 decays is performed. The study is based on the data sample of more than 4×106 events recorded with the OPAL detector at LEP. The fluctuations and correlations are analysed in terms of the normalized scaled factorial moments and cumulants up to the fifth order. The moments are observed to have intermittency-like behaviour, which is found to be more pronounced with increasing dimension. The large data sample allows for the first time a study of the factorial cumulants in e + e − annihilation. The analysis of the cumulants shows the existence of genuine multiparticle correlations with a strong intermittency rise up to higher orders. These correlations are found to be stronger in higher dimensions. The decomposition of the factorial moments into lower-order correlations shows that the dynamical fluctuations have important contributions from genuine many-particle correlations. The Monte Carlo models Jetset 7.4 and Herwig 5.9 are found to reproduce the trend of the measured moments and cumulants but they underestimate the magnitudes. The results are found to be consistent with QCD jet formation dynamics, although additional contributions from other mechanisms cannot be excluded. 240The OPAL Collaboration: Intermittency and correlations in hadronic Z 0 decays

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Qualitative difference between the dynamics of particle production in soft and hard processes of high energy collisions

Cited by 19 publications

References 17 publications

Monte Carlo study of the dynamical-fluctuation property of the hadronic system inside jets

Monte Carlo study of the dynamical-fluctuation property of the hadronic system inside jets

Scaling properties of multiplicity fluctuations in heavy-ion collisions simulated by AMPT model

Intermittency and correlations in hadronic Z $^0$ decays

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