Intermittency of charged particles in the hybrid UrQMD+CMC model at energies available at the BNL Relativistic Heavy Ion Collider

Abstract

Within the framework of intermittency analysis, a search for critical fluctuations is ongoing to locate the possible critical point in the quantum chromodynamics phase diagram. In this study, self-similar critical fluctuations from a critical Monte Carlo (CMC) model have been incorporated into the cascade ultrarelativistic quantum molecular dynamics (UrQMD) model. This hybrid UrQMD+CMC model exhibits a clear power-law behavior of scaled factorial moment for charged particles in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 7.7-200 GeV. By comparing the UrQMD+CMC model results with those from the STAR experiment, it is found that the value of a calculated scaling exponent falls in the range of the experimental measurement when 1-2 \% signal of intermittency fluctuations is added into the UrQMD sample.

8 pages, 6 figures, published version

References in corpus (19)

• Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage
• Canonical partition function and finite density phase transition in lattice QCD
• Non-monotonic energy dependence of net-proton number fluctuations
• Cumulants and Correlation Functions of Net-proton, Proton and Antiproton Multiplicity Distributions in Au+Au Collisions at energies available at the BNL Relativistic Heavy Ion Collider
• Critical Opalescence in Baryonic QCD Matter
• Rapidity dependence of proton cumulants and correlation functions
• Critical point fluctuations: Finite size and global charge conservation effects
• NA61/SHINE results on fluctuations and correlations at CERN SPS energies
• Color reconnection as a possible mechanism of intermittency in the emission spectra of charged particles in PYTHIA-generated high-multiplicity $\text{pp}$ collisions at energies available at the CERN Large Hadron Collider
• Probing criticality with deep learning in relativistic heavy-ion collisions
• Proton correlations and apparent intermittency in the UrQMD model with hadronic potentials
• Intermittency analysis of proton numbers in heavy-ion collisions at energies available at the BNL Relativistic Heavy Ion Collider
• Signature of intermittency in hybrid UrQMD-hydro data at 10 AGeV Au+Au collisions
• Impact of momentum resolution on factorial moments due to power-law correlations between particles
• Overview of intermittency analysis in heavy-ion collisions
• Correlation Integral vs. second order Factorial Moments and an efficient computational technique
• Measurement of Intermittency for Charged Particles in Au + Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 7.7-200 GeV from STAR
• Role of net baryon density on rapidity width of identified particles from the lowest energies available at the CERN Super Proton Synchrotron to those at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider
• Highlights from the NA61/SHINE strong-interactions programme