Probing the Gluon Plasma with Charm Balance Functions

Abstract

Recent theoretical explanations for how hydrodynamic-like flow can build up quickly in small collision systems (hydrodynamization) has led to a microscopic picture of flow building up in a gluon-dominated phase before chemical equilibrium between quarks and gluons has been attained. The goal of this contribution to Offshell-2021 is to explore consequence of assuming a long-lived gluon-dominated phase, which we shall denote a gluon plasma (GP). As these consequences are naturally enhanced in a large systems, we assume and explore the extreme scenario in which a GP would be created in AA collisions and exist for significant time before the formation of a chemically-equilibrated quark-gluon plasma (QGP). The GP and its formation would be impossible to probe with light-quark hadrons, which are first produced later in this scenario. As charm quarks are produced early in the collision, they can circumvent the limitations of light quarks and we propose charm balance functions as an effective tool to test this idea and constrain the dynamics of the GP.

arXiv comment9 pages, 5 figures. Prepared for "Offshell-2021" conference

References in corpus (45)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• An Introduction to PYTHIA 8.2
• A Brief Introduction to PYTHIA 8.1
• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Observation of the chiral magnetic effect in ZrTe5
• Observation of Long-Range Near-Side Angular Correlations in Proton-Proton Collisions at the LHC
• Heavy Ion Collisions: The Big Picture, and the Big Questions
• Long-range angular correlations on the near and away side in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• The Chiral Magnetic Effect and Anomaly-Induced Transport
• J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Detailed measurement of the e+e- pair continuum in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV and implications for direct photon production
• Small System Collectivity in Relativistic Hadron and Nuclear Collisions
• J/$\psi$ suppression at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Direct photon production in Pb-Pb collisions at $\sqrt{s_\rm{NN}}$ = 2.76 TeV
• Centrality, rapidity and transverse momentum dependence of $J/\psi$ suppression in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=2.76 TeV
• Observation of direct-photon collective flow in sqrt(s_NN)=200 GeV Au+Au collisions
• Clocking hadronization in relativistic heavy ion collisions with balance functions
• Observation of double charm production involving open charm in pp collisions at $\sqrt{s}$=7 TeV
• Ultra-relativistic nuclear collisions: event shape engineering
• Observation of charge-dependent azimuthal correlations in pPb collisions and its implication for the search for the chiral magnetic effect
• Open Heavy-Flavor Production in Heavy-Ion Collisions
• Azimuthal correlations of heavy quarks in Pb+Pb collisions at LHC ($\sqrt{s}=2.76$ TeV)
• Constraining the magnitude of the Chiral Magnetic Effect with Event Shape Engineering in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76$ TeV
• QGP formation time and direct photons from heavy ion collisions
• Chemical Equilibration in Hadronic Collisions
• Balance Functions, Correlations, Charge Fluctuations and Interferometry
• Charge correlations using the balance function in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Thermal photon $v_2$ with slow quark chemical equilibration
• Production mechanisms of charm hadrons in the string model
• Multiplicity and transverse momentum evolution of charge-dependent correlations in pp, p-Pb, and Pb-Pb collisions at the LHC
• D-Dbar Correlations as a sensitive probe for thermalization in high-energy nuclear collisions
• Balance functions in coalescence model
• Constraining the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV
• Elucidating the multiplicity dependence of J/$\psi$ production in proton-proton collisions with PYTHIA8
• Production of Charge in Heavy Ion Collisions
• Heavy Flavor Azimuthal Correlations in Cold Nuclear Matter
• QCD Challenges from pp to A-A Collisions
• Study of J/$\psi$ azimuthal anisotropy at forward rapidity in Pb-Pb collisions at $\sqrt{{\text{s}}_{\mathrm{NN}}}$ = 5.02 TeV
• Search for the Chiral Magnetic Effect with Isobar Collisions at $\sqrt{s_{NN}}$ = 200 GeV by the STAR Collaboration at RHIC
• Diffusion of charm and beauty in the Glasma
• Electron-muon correlation as a new probe to strongly interacting quark-gluon plasma
• Heavy-quark azimuthal momentum correlations as a sensitive probe of thermalization