Multiparticle azimuthal cumulants in p+Pb collisions from a multiphase transport model

Abstract

A new subevent cumulant method was recently developed, which can significantly reduce the non-flow contributions in long-range correlations for small systems compared to the standard cumulant method. In this work, we study multi-particle cumulants in $p$+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with a multiphase transport model (AMPT), including two- and four-particle cumulants ($c_2\{2\}$ and $c_2\{4\}$) and symmetric cumulants [SC(2, 3) and SC(2, 4)]. Our numerical results show that $v_2\{2\}$ is consistent with the experimental data, while the magnitude of $c_2\{4\}$ is smaller than the experimental data, which may indicate either the collectivity is underestimated or some dynamical fluctuations are absent in the AMPT model. For the symmetric cumulants, we find that the results from the standard cumulant method are consistent with the experimental data, but those from the subevent cumulant method show different behaviors. The results indicate that the measurements from the standard cumulant method are contaminated by non-flow effects, especially when the number of produced particles is small. The subevent cumulant method is a better tool to explore the $real$ collectivity in small systems.

arXiv comment15 pages, 6 figures; final published version

References in corpus (54)

• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Observation of Long-Range Near-Side Angular Correlations in Proton-Proton Collisions at the LHC
• Conformal Relativistic Viscous Hydrodynamics: Applications to RHIC results at sqrt(s_NN) = 200 GeV
• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• Flow at the SPS and RHIC as a Quark Gluon Plasma Signature
• Long-range angular correlations on the near and away side in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• Observation of Associated Near-side and Away-side Long-range Correlations in sqrt(s_NN)=5.02 TeV Proton-lead Collisions with the ATLAS Detector
• Causal viscous hydrodynamics in 2+1 dimensions for relativistic heavy-ion collisions
• Formation of superdense hadronic matter in high energy heavy-ion collisions
• Multiplicity and transverse-momentum dependence of two- and four-particle correlations in pPb and PbPb collisions
• Measurement of the azimuthal anisotropy for charged particle production in sqrt(s_NN) = 2.76 TeV lead-lead collisions with the ATLAS detector
• ZPC 1.0.1: a parton cascade for ultrarelativistic heavy ion collisions
• Flow analysis with cumulants: direct calculations
• Flow analysis from multiparticle azimuthal correlations
• Observation of long-range elliptic anisotropies in $\sqrt{s}=$13 and 2.76 TeV $pp$ collisions with the ATLAS detector
• Long range rapidity correlations and jet production in high energy nuclear collisions
• Quadrupole Anisotropy in Dihadron Azimuthal Correlations in Central $d$$+$Au Collisions at $\sqrt{s_{{}_{NN}}}$=200 GeV
• New method for measuring azimuthal distributions in nucleus-nucleus collisions
• Comparison of the Color Glass Condensate to di-hadron correlations in proton-proton and proton-nucleus collisions
• The ridge in proton-proton collisions at the LHC
• Collective flow in p-Pb and d-Pb collisions at TeV energies
• Initial state geometry and the role of hydrodynamics in proton-proton, proton-nucleus and deuteron-nucleus 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
• High transverse momentum triggered correlations over a large pseudorapidity acceptance in Au+Au collisions at sqrt(s_NN)=200 GeV
• Generic framework for anisotropic flow analyses with multi-particle azimuthal correlations
• Novel Collective Phenomena in High-Energy Proton-Proton and Proton-Nucleus Collisions
• Collective dynamics of the high-energy proton-nucleus collisions
• Bulk and shear viscosities of matter created in relativistic heavy-ion collisions
• Elliptic flow in the Gaussian model of eccentricity fluctuations
• Elliptic and triangular flow in p+Pb and peripheral Pb+Pb collisions from parton scatterings
• Correlated event-by-event fluctuations of flow harmonics in Pb-Pb collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=2.76$ TeV
• Long-range and short-range dihadron angular correlations in central PbPb collisions at a nucleon-nucleon center of mass energy of 2.76 TeV
• Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models
• Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models
• High Multiplicity pp and pA Collisions: Hydrodynamics at its Edge
• Collectivity and electromagnetic radiation in small systems
• Revealing long-range multi-particle collectivity in small collision systems via subevent cumulants
• Universal fluctuation-driven eccentricities in proton-proton, proton-nucleus and nucleus-nucleus collisions
• Elliptic and triangular flow anisotropy in deuteron-gold collisions at RHIC and proton-lead collisions at the LHC
• Measurement of multi-particle azimuthal correlations with the subevent cumulant method in $pp$ and $p$+Pb collisions with the ATLAS detector at the LHC
• Long-range azimuthal correlations in proton-proton and proton-nucleus collisions from the incoherent scattering of partons
• Observation of correlated azimuthal anisotropy Fourier harmonics in pp and pPb collisions at the LHC
• Elliptic flow from color-dipole orientation in pp and pA collisions
• Azimuthal Anisotropy Relative to the Participant Plane from AMPT in Central p+Au, d+Au, and ${}^3$He+Au Collisions at $\sqrt{s_{NN}}=200$ GeV
• Importance of non-flow in mixed-harmonic multi-particle correlations in small collision systems
• Exploring correlations in the CGC wave function: odd azimuthal anisotropy
• Elliptic Anisotropy $v_2$ May Be Dominated by Particle Escape instead of Hydrodynamic Flow
• High order cumulants of the azimuthal anisotropy in the dilute-dense limit: Connected graphs
• Anisotropic flow and flow fluctuations for Au + Au at $\sqrt{s_{NN}}$ = 200 GeV in a multiphase transport model
• Limitation of multi-particle correlations for studying the event-by-event distribution of harmonic flow in heavy-ion collisions
• Elliptic flow coefficients from transverse momentum conservation
• A remark on the sign change of the four-particle azimuthal cumulant in small systems
• Collective flow and hydrodynamics in large and small systems at the LHC

Cited by in corpus (24)

• The ALICE experiment: a journey through QCD
• Investigations of anisotropic flow using multi-particle azimuthal correlations in pp, p-Pb, Xe-Xe, and Pb-Pb collisions at the LHC
• Evidence of quadrupole and octupole deformations in ${}^{96}$Zr+${}^{96}$Zr and ${}^{96}$Ru+${}^{96}$Ru collisions at ultra-relativistic energies
• Probing triaxial deformation of atomic nuclei in high-energy heavy ion collisions
• Probing nuclear quadrupole deformation from correlation of elliptic flow and transverse momentum in heavy ion collisions
• Centrality fluctuations in heavy-ion collisions
• Higher order Symmetric Cumulants
• Disentangle contributions to small-system collectivity via scans of light nucleus-nucleus collisions
• Searching for small droplets of hydrodynamic fluid in proton--proton collisions at the LHC
• A method to test the coupling strength of the linear and nonlinear contributions to higher-order flow harmonics via Event Shape Engineering
• Sensitivity analysis of the chiral magnetic effect observables using a multiphase transport model
• Investigating high energy proton proton collisions with a multi-phase transport model approach based on PYTHIA8 initial conditions
• Impact of nuclear structure on the CME background in ${}_{44}^{96}$Ru + ${}_{44}^{96}$Ru and ${}_{40}^{96}$Zr + ${}_{40}^{96}$Zr collisions at $\sqrt{s_{NN}}$ = 7.7 $\sim$ 200 GeV from a multiphase transport model
• Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems
• Non-flow effects in three-particle mixed-harmonic azimuthal correlations in small collision systems
• Characterizing the initial and final state effects of relativistic nuclear collisions
• Measuring differential flow angle fluctuations in relativistic nuclear collisions
• A model investigation of the longitudinal broadening of the transverse momentum two-particle correlator
• A sensitivity study of the primary correlators used to characterize chiral-magnetically-driven charge separation
• An extended $R_{{\Psi }_m}^{(2)}(\Delta S_2)$ correlator for detecting and characterizing the Chiral Magnetic Wave
• Parton collisional effect on the conversion of geometry eccentricities into momentum anisotropies in relativistic heavy-ion collisions
• Beam Energy Dependence of the Linear and Mode-Coupled Flow Harmonics Using the A Multi-Phase Transport Model
• Measuring differential particle correlations in relativistic nuclear collisions
• The impact of nuclear deformation on relativistic heavy-ion collisions: assessing consistency in nuclear physics across energy scales