Correlation functions of net-proton multiplicity distributions in Au + Au collisions at energies available at the BNL Relativistic Heavy Ion Collider from a multiphase transport model

Abstract

Fluctuations of conserved quantities are believed to be sensitive observables to probe the signature of the QCD phase transition and critical point. It was argued recently that measuring the genuine correlation functions (CFs) could provide cleaner information on possible nontrivial dynamics in heavy-ion collisions.With the AMPT (a multiphase transport) model, the centrality and energy dependence of various orders of CFs of net protons in Au + Au collisions at $\sqrt{s_{\mathrm{NN}}}$=7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV are investigated. The model results show that the number of antiprotons is important and should be taken into account in the calculation of CFs at high energy and/or in peripheral collisions. It is also found that the contribution of antiprotons is more important for higher order correlations than for lower ones. The CFs of antiprotons and mixed correlations play roles comparable to those of protons at high energies. Finally, we make comparisons between the model calculation and experimental data measured in the STAR experiment at the BNL Relativistic Heavy Ion Collider.

arXiv commentReplaced with the published version

References in corpus (27)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Signatures of the Tricritical Point in QCD
• Non-Gaussian fluctuations near the QCD critical point
• Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC
• On the sign of kurtosis near the QCD critical point
• Search for the QCD Critical Point with Fluctuations of Conserved Quantities in Relativistic Heavy-Ion Collisions at RHIC : An Overview
• Fluctuation Probes of Quark Deconfinement
• Higher Moments of Net-proton Multiplicity Distributions at RHIC
• Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC
• Hadronic fluctuations at the QCD phase transition
• Baryon-strangeness correlations: a diagnostic of strongly interacting matter
• Third moments of conserved charges as probes of QCD phase structure
• Acceptance corrections to net baryon and net charge cumulants
• QCD critical region and higher moments for three flavor models
• Acceptance dependence of fluctuation measures near the QCD critical point
• Measurement of higher cumulants of net-charge multiplicity distributions in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=7.7-200$ GeV
• Error Estimation for Moments Analysis in Heavy-Ion Collision Experiments
• Cumulants and Correlation Functions vs the QCD phase diagram
• More efficient formulas for efficiency correction of cumulants and effect of using averaged efficiency
• Higher Moments of Net-Particle Multiplicity Distributions
• Properties and uses of factorial cumulants in relativistic heavy-ion collisions
• Correlated stopping, proton clusters and higher order proton cumulants
• Probing proton fluctuations with asymmetric rapidity correlations
• Multi-particle long-range rapidity correlations from fluctuation of the fireball longitudinal shape
• Energy Dependence of Moments of Net-Proton, Net-Kaon, and Net-Charge Multiplicity Distributions at STAR
• Saturation scale fluctuations and multi-particle rapidity correlations

Cited by in corpus (8)

• 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
• Ising-QCD phenomenology close to the critical point
• Dynamical development of proton cumulants and correlation functions in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV from a multiphase transport model
• System size dependence of baryon-strangeness correlations in relativistic heavy ion collisions from a multiphase transport model
• Probing fluctuations and correlations of strangeness by net-kaon cumulants in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV
• Baseline study for net-proton number fluctuations at top energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider with the Angantyr model
• $N$-point functions of strongly coupled fluids dual to generalized higher-derivative theories of gravity
• How to locate the QCD phase boundary by scanning observable in the phase plane