Improved intermittency analysis of proton density fluctuations in NA49 ion collisions at 158 AGeV

Antoniou, N. G.; Davis, N.; Diakonos, F. Κ.

doi:10.1051/epjconf/20147100035

Cited by 4 publications

(3 citation statements)

References 19 publications

(19 reference statements)

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“…The dependence of the normalized factorial moments of the multiplicity distribution (M) in bins over phase space on the bin size (intermittency) appears, revealing dynamical fluctuations in the underlying process. Factorial moments were studied in [19,20], and the rise of the factorial moments as a function of multiplicity was observed. Recently, intermittency was studied for heavy ion collisions by the SHINE/NA61 Collaboration [21].…”

Section: Introductionmentioning

confidence: 99%

Particle Multiplicity Fluctuations and Spatiotemporal Properties of Particle-Emitting Source of Strongly Interacting Matter for NICA and RHIC Energies

et al. 2022

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The results of the model analysis of hadron femtoscopic correlations and factorial moments of particle multiplicity in heavy ion collisions for the energy range of the Beam Energy Scan (BES) program at RHIC and future NICA collider are presented. For this purpose, the simulation of Au+Au collisions at center-of-mass energies 7.7 and 11.5 GeV per nucleon pair using the UrQMD, vHLLE+UrQMD (with the crossover and first-order equation of states), and HYDJET++ event generators was performed. The sensitivity of pion and kaon correlation radii and the dependence of the factorial moments on heavy ion beam energy to quark–hadron phase transition details was studied. In addition, the possible influence of some relevant detector effects on the corresponding experimental observables is discussed.

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Section: Introductionmentioning

confidence: 99%

Particle Multiplicity Fluctuations and Spatiotemporal Properties of Particle-Emitting Source of Strongly Interacting Matter for NICA and RHIC Energies

et al. 2022

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“…The proposed scheme is based on theoretical arguments supporting that the proton sector carries critical fluctuations when the freeze out is close to the critical point [8]. Our tool in this study is the intermittency method [9][10][11] providing access to local density fluctuations in contrast to integrated cumulants which describe global density fluctuations [12]. Although factorial moments and the associated intermittency analysis can be used to observe dynamic fluctuations in particle production in a general context [9,11], when applied in a search for critical fluctuations, there are some model independent key issues, which should be taken into account, summarized in the following list:…”

Section: Introductionmentioning

confidence: 99%

Ising-QCD phenomenology close to the critical point

Antoniou¹,

Diakonos²

2019

J. Phys. G: Nucl. Part. Phys.

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We employ the recently introduced Ising-QCD partition function (N. G. Antoniou et al., Phys. Rev. D 97, 034015 (2018)) to explore in detail the behaviour of the moments of the baryon-number, within the critical region around the critical endpoint. Our analysis is based on the relation of finite-size scaling in real space with intermittency in transverse momentum space. It demonstrates in practice the recent observation (N. G. Antoniou et al., Phys. Rev. D 97, 034015 (2018)) that combined measurements of the intermittency index φ2 and the freeze-out parameters µ b (baryochemical potential), T (temperature), provide us with a powerful tool to detect the critical point. We also show that the finite-size scaling (FSS) region, as a part of the critical region, is very narrow in both the chemical potential and the temperature direction, even for light nuclei. Furthermore, using published experimental results for (µ b , T, φ2) in A+A collisions at √ sNN = 17.2 GeV (NA49 experiment, CERN-SPS), we are able to make a set of predictions for the freeze-out states of Ar + Sc and Xe + La collisions at the same energy in the NA61/SHINE experiment (CERN-SPS). In particular, we find that the Ar + Sc system freezes out outside the FSS region but very close to its boundary, a property which may leave characteristic traces in intermittency analysis.

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“…Fig.1. Variations of ln n q with nlnn in η-space for the relativistic charged particles produced in16 O-AgBr, 32 S-AgBr and 32 S-Gold interactions at 200 A GeV/c.…”

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confidence: 99%

Multifractal characteristics of multiparticle production in heavy-ion collisions at SPS energies

Khan

Ahmad

2018

Int. J. Mod. Phys. E

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Entropy, dimensions and other multifractal characteristics of multiplicity distributions of relativistic charged hadrons produced in ion-ion collisions at SPS energies are investigated. The analysis of the experimental data is carried out in terms of phase space bin-size dependence of multiplicity distributions following the Takagi's approach. Yet another method is also followed to study the multifractality which, is not related to the bin-width and (or) the detector resolution, rather involves multiplicity distribution of charged particles in full phase space in terms of information entropy and its generalization, Rényi's order-q information entropy. The findings reveal the presence of multifractal structure-a remarkable property of the fluctuations. Nearly constant values of multifractal specific heat, 'c' estimated by the two different methods of analysis followed indicate that the parameter 'c' may be used as a universal characteristic of the particle production in high energy collisions. The results obtained from the analysis of the experimental data agree well with the predictions of Monte Carlo model AMPT.

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Improved intermittency analysis of proton density fluctuations in NA49 ion collisions at 158 AGeV

Cited by 4 publications

References 19 publications

Particle Multiplicity Fluctuations and Spatiotemporal Properties of Particle-Emitting Source of Strongly Interacting Matter for NICA and RHIC Energies

Particle Multiplicity Fluctuations and Spatiotemporal Properties of Particle-Emitting Source of Strongly Interacting Matter for NICA and RHIC Energies

Ising-QCD phenomenology close to the critical point

Multifractal characteristics of multiparticle production in heavy-ion collisions at SPS energies

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