Collective dynamics in heavy and light-ion collisions -- II) Determining the origin of collective behavior in high-energy collisions

Abstract

Exploiting the first measurements of the same ion species in OO collisons at RHIC and LHC, we propose an observable to distinguish whether collective behavior builds up through a hydrodynamic expansion of a strongly interacting QGP or few final state re-scatterings. Our procedure allows to disentangle the effects of the initial state geometry and the dynamical response mechanism on anisotropic flow. We validate its ability to discriminate between systems with different interaction rates using results from event-by-event simulations in kinetic theory.

15 pages, 15 figures. v2: several minor changes, added data files in ancillary folder. v3: several minor changes, data files moved to cited zenodo archive, equivalent to published version

References in corpus (16)

• Multi-particle azimuthal correlations in p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider
• A 3+1 dimensional viscous hydrodynamic code for relativistic heavy ion collisions
• Determining initial-state fluctuations from flow measurements in heavy-ion collisions
• Measurement of multi-particle azimuthal correlations in $pp$, $p$+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector
• An effective chiral Hadron-Quark Equation of State
• Energy dependence and fluctuations of anisotropic flow in Pb-Pb collisions at $\sqrt{{\text{s}}_{\text{NN}}}=5.02$ and $2.76$ TeV
• Flow in AA and pA as an interplay of fluid-like and non-fluid like excitations
• Observation of correlated azimuthal anisotropy Fourier harmonics in pp and pPb collisions at the LHC
• Skewness of elliptic flow fluctuations
• Exploring New Small System Geometries in Heavy Ion Collisions
• Glauber Monte Carlo predictions for ultra-relativistic collisions with ${}^{16}\mathrm{O}$
• Establishing the Range of Applicability of Hydrodynamics in High-Energy Collisions
• Development of transverse flow at small and large opacities in conformal kinetic theory
• Opacity dependence of transverse flow, pre-equilibrium and applicability of hydrodynamics in heavy-ion collisions
• System-size dependence of the charged-particle pseudorapidity density at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV for pp, p-Pb, and Pb-Pb collisions
• Collective dynamics in heavy and light-ion collisions -- I) Kinetic Theory vs. Hydrodynamics

Cited by in corpus (5)

• Bayesian reconstruction of anisotropic flow fluctuations at fixed impact parameter
• Transport-model investigation of scaling of the number of constituent quarks and the hadronic-partonic transition in Au + Au collisions
• Phenomenological constraints on QCD transport with quantified theory uncertainties
• Extended applicability domain of viscous anisotropic hydrodynamics in (2+1)-D Bjorken flow with transverse expansion
• Observation of Universal Expansion Anisotropy from Cold Atoms to Hot Quark-Gluon Plasma