Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models

Abstract

We trace the development of elliptic anisotropy (v2) via parton-parton collision history in two transport models. The parton v2 is studied as a function of the number of collisions of each parton in Au+Au and d+Au collisions at sNN =200 GeV. It is found that the majority of v2 comes from the anisotropic escape probability of partons, with no fundamental difference at low and high transverse momenta. The contribution to v2 from hydrodynamic-type collective flow is found to be small. Only when the parton-parton cross-section is set unrealistically large does this contribution start to take over. Our findings challenge the current paradigm emerged from hydrodynamic comparisons to anisotropy data.

This paper has been withdrawn by the author due to duplication with arXiv:1502.05572

References in corpus (7)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• Correlations from hydrodynamic flow in p-Pb collisions
• Elliptic and triangular flow in p+Pb and peripheral Pb+Pb collisions from parton scatterings
• Evolution of transverse flow and effective temperatures in the parton phase from a multi-phase transport model
• Elliptic flow in proton-proton collisions at 7 TeV

Cited by in corpus (103)

• Small System Collectivity in Relativistic Hadron and Nuclear Collisions
• One fluid to rule them all: viscous hydrodynamic description of event-by-event central p+p, p+Pb and Pb+Pb collisions at $\sqrt{s}=5.02$ TeV
• Open Heavy Flavor in QCD Matter and in Nuclear Collisions
• Investigations of anisotropic flow using multi-particle azimuthal correlations in pp, p-Pb, Xe-Xe, and Pb-Pb collisions at the LHC
• Open Heavy-Flavor Production in Heavy-Ion Collisions
• Experimental overview on small collision systems at the LHC
• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Experimental searches for the chiral magnetic effect in heavy-ion collisions
• D-meson production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV and in pp collisions at $\sqrt{s}=7$ TeV
• Importance of isobar density distributions on the chiral magnetic effect search
• Predictions for $\sqrt{s_{NN}}=5.02$ TeV Pb+Pb Collisions from a Multi-Phase Transport Model
• Transverse momentum-flow correlations in relativistic heavy-ion collisions
• Flow in AA and pA as an interplay of fluid-like and non-fluid like excitations
• Beam Energy Dependence of the Third Harmonic of Azimuthal Correlations in Au+Au Collisions at RHIC
• Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC
• Nearly isentropic flow at sizeable $\eta /s$
• Measurements of two-particle correlations in $e^{+}{e}^{-}$ collisions at 91 GeV with ALEPH archived data
• Opacity dependence of elliptic flow in kinetic theory
• Varying the chiral magnetic effect relative to flow in a single nucleus-nucleus collision
• QM2017: Status and Key open Questions in Ultra-Relativistic Heavy-Ion Physics
• Correlation between mean transverse momentum and anisotropic flow in heavy-ion collisions
• Collectivity from interference
• A Fixed-Target Programme at the LHC: Physics Case and Projected Performances for Heavy-Ion, Hadron, Spin and Astroparticle Studies
• Measurement of prompt D${}^0$, D${}^{+}$, D${}^{\ast +}$, and D${}_s^{+}$ production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Studies of charm and beauty hadron long-range correlations in pp and pPb collisions at LHC energies
• Exploring the Beam Energy Dependence of Flow-Like Signatures in Small System $d+$Au Collisions
• Measurement of the azimuthal anisotropy of ${\rm Y}$(1S) and ${\rm Y}$(2S) mesons in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Disentangle contributions to small-system collectivity via scans of light nucleus-nucleus collisions
• Development of transverse flow at small and large opacities in conformal kinetic theory
• Measurement of azimuthal correlations of D mesons and charged particles in pp collisions at $\sqrt{s}=7$ TeV and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Elliptic Anisotropy $v_2$ May Be Dominated by Particle Escape instead of Hydrodynamic Flow
• Are minimal conditions for collectivity met in e+e- collisions?
• Small system studies: A theory overview
• Development of heavy-flavour flow-harmonics in high-energy nuclear collisions
• Multiparticle azimuthal cumulants in p+Pb collisions from a multiphase transport model
• Rapidity dependence of initial state geometry and momentum correlations in p+Pb collisions
• Anisotropic escape mechanism and elliptic flow of bottomonia
• Origins of collectivity in small systems
• Pseudorapidity and transverse momentum dependence of flow harmonics in pPb and PbPb collisions
• QCD Challenges from pp to A-A Collisions
• Origin of the mass splitting of azimuthal anisotropies in a multi-phase transport model
• Exploring the applicability of dissipative fluid dynamics to small systems by comparison to the Boltzmann equation
• Collective flows of $\alpha$-clustering ${}^{12}\mathrm{C}$ + ${}^{197}\mathrm{Au}$ by using different flow analysis methods
• Opacity dependence of transverse flow, pre-equilibrium and applicability of hydrodynamics in heavy-ion collisions
• Improvement of heavy flavor productions in a multi-phase transport model updated with modern nPDFs
• Origin of the mass splitting of elliptic anisotropy in a multiphase transport model
• Hot spots and gluon field fluctuations as causes of eccentricity in small systems
• Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at sqrt(s[NN]) = 5.02 TeV
• Exploring Origins for Correlations between Flow Harmonics and Transverse Momentum in Small Collision Systems (Unambiguous Ambiguity)
• Measurement of long-range two-particle azimuthal correlations in $Z$-boson tagged $pp$ collisions at $\sqrt{s}=8$ and 13 TeV
• Investigating high energy proton proton collisions with a multi-phase transport model approach based on PYTHIA8 initial conditions
• Two-particle angular correlations in pp and p-Pb collisions at LHC energies from a multi-phase transport model
• Scaling behavior of anisotropic flow harmonics in the far from equilibrium regime
• Long-range near-side correlation in $e^{+}{e}^{-}$ Collisions at 183-209 GeV with ALEPH Archived Data
• Using local nuclear scaling of initial condition parameters to improve the system size dependence of transport model descriptions of nuclear collisions
• Investigating the elliptic anisotropy of identified particles in p--Pb collisions with a multi-phase transport model
• Charm quarks are more hydrodynamic than light quarks in final-state elliptic flow
• Fireball tomography from bottomonia elliptic flow in relativistic heavy-ion collisions
• Collectivity in large and small systems formed in ultrarelativistic collisions
• Pion transverse-momentum spectrum and elliptic anisotropy of partially coherent source
• Measurement of emission angle anisotropy via long-range angular correlations with high $p_T$ hadrons in $d$$+$Au and $p$$+$$p$ collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• The shear viscosity of parton matter under anisotropic scatterings
• Elliptic flow coefficients from transverse momentum conservation
• Implication of two-baryon azimuthal correlations in $pp$ collisions at LHC energies on the QGP
• Initial state and pre-equilibrium effects in small systems
• Disentangling the development of collective flow in high energy proton proton collisions with a multiphase transport model
• Measurement of Two-Particle Correlations of Hadrons in $e^{+}{e}^{-}$ Collisions at Belle
• Particle productions and anisotropic flows from the AMPT model for Cu+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Anisotropic flow: A case for Bottomonia
• Review of nonflow estimation methods and uncertainties in relativistic heavy-ion collisions
• Machine learning study to identify collective flow in small and large colliding systems
• Measurements of azimuthal anisotropies at forward and backward rapidity with muons in high-multiplicity p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV
• Strange hadron collectivity in pPb and PbPb collisions
• Open Heavy Flavors in Nuclear Collisions: Theory Overview
• Parton collisional effect on the conversion of geometry eccentricities into momentum anisotropies in relativistic heavy-ion collisions
• Validation and improvement of the ZPC parton cascade inside a box
• Effect of an anisotropic escape mechanism on elliptic flow in relativistic heavy-ion collisions
• On differences between even and odd anisotropic-flow harmonics in non-equilibrated systems
• Response relation in Pb-Pb and p-Pb collisions at 5.02 TeV
• A Quasiparticle Transport Explanation for Collectivity in the Smallest of Collision Systems (p + p and e+e-)
• Two-particle angular correlations in $e^{+}{e}^{-}$ collisions to hadronic final states in two reference coordinates at Belle
• Nuclear cluster structure effect in ${}^{16}$O+${}^{16}$O collisions at the top RHIC energy
• Investigating the role of partonic and hadronic dynamics in mass splitting of elliptic anisotropy in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV
• Multiparticle azimuthal cumulants from transverse momentum conservation and collective flow
• Azimuthal anisotropy of jet particles in p-Pb and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Collisional broadening of angular correlations in a multiphase transport model
• Effect of simulating parity-odd observables in high energy heavy ion collisions on Balance Functions of charged particles and elliptic flow of pions
• Symmetric cumulant $s{c}_{2,4}\left\{4\right\}$ and asymmetric cumulant $a{c}_2\left\{3\right\}$ from transverse momentum conservation and flow
• Bottomonia Suppression in Heavy Ion Collisions from AdS/CFT
• Small systems and the single-hit approximation in the AMY parton cascade ALPACA
• Testing the collectivity in large and small colliding systems with test particles
• Heavy quark flow as better probes of QGP properties
• Left-right splitting of elliptic flow due to directed flow in heavy ion collisions
• The physics mechanisms of light and heavy flavor $v_2$ and mass ordering in AMPT
• Collectivity in small systems - Initial state vs. final state effects
• How many interactions does it take to modify a jet?
• Azimuthal Correlation Anisotropies in p + p Collisions Simulated by Pythia
• Long-range azimuthal correlations for partially coherent pion emission in proton-proton collisions
• Particle species dependence of elliptic flow fluctuations in Pb-Pb collisions at LHC energies in a multiphase transport model
• Recent Findings from Heavy-Flavor Angular Correlation Measurements in Hadronic Collisions
• Elliptic flow from Coulomb interaction and low density elastic scattering
• Hadronization effects on transverse momentum dependent jet fragmentation function in small systems
• Observation of Universal Expansion Anisotropy from Cold Atoms to Hot Quark-Gluon Plasma