Measurements of mass-dependent azimuthal anisotropy in central $p$$+$Au, $d$$+$Au, and ${}^3$He$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV

Abstract

We present measurements of the transverse-momentum dependence of elliptic flow $v_2$ for identified pions and (anti)protons at midrapidity ($|\eta |<0.35$), in 0%--5% central $p$$+$Au and ${}^3$He$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV. When taken together with previously published measurements in $d$$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV, the results cover a broad range of small-collision-system multiplicities and intrinsic initial geometries. We observe a clear mass-dependent splitting of $v_2(p_T)$ in $d$$+$Au and ${}^3$He$+$Au collisions, just as in large nucleus-nucleus ($A$$+$$A$) collisions, and a smaller splitting in $p$$+$Au collisions. Both hydrodynamic and transport model calculations successfully describe the data at low $p_T$ ($<1.5$ GeV/$c$), but fail to describe various features at higher $p_T$. In all systems, the $v_2$ values follow an approximate quark-number scaling as a function of the hadron transverse kinetic energy per constituent quark($K{E}_T/n_q$), which was also seen previously in $A$$+$$A$ collisions.

arXiv comment353 authors, 12 pages, 7 figures, 3 tables. v2 is version accepted for publication in Phys. Rev. C. Data tables are included in the Appendix. Plain text data tables for points plotted in figures for other PHENIX publications are publicly available at http://www.phenix.bnl.gov/papers.html

References in corpus (51)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Collective flow and viscosity in relativistic heavy-ion collisions
• Methods for analyzing anisotropic flow in relativistic nuclear collisions
• Radial and elliptic flow at RHIC: further predictions
• Observation of Long-Range Near-Side Angular Correlations in Proton-Proton Collisions at the LHC
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• 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
• Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• 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
• Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au+Au collisions at s(NN)**(1/2) = 200-GeV
• Formation of superdense hadronic matter in high energy heavy-ion collisions
• Evidence for collectivity in pp collisions at the LHC
• Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV
• Long-range angular correlations of $\pi$, K and p in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Observation of long-range elliptic anisotropies in $\sqrt{s}=$13 and 2.76 TeV $pp$ collisions with the ATLAS detector
• Identified Particle Elliptic Flow in Au+Au Collisions at $\sqrt{s_{{}_{NN}}}=130$ GeV}
• Quadrupole Anisotropy in Dihadron Azimuthal Correlations in Central $d$$+$Au Collisions at $\sqrt{s_{{}_{NN}}}$=200 GeV
• One fluid to rule them all: viscous hydrodynamic description of event-by-event central p+p, p+Pb and Pb+Pb collisions at $\sqrt{s}=5.02$ TeV
• Color reconnection and flow-like patterns in pp collisions
• Coalescence Models For Hadron Formation From Quark Gluon Plasma
• Scaling properties of proton and anti-proton production in sqrt(s_NN) = 200 GeV Au + Au collisions
• Measurement of long-range near-side two-particle angular correlations in pp collisions at sqrt(s) = 13 TeV
• Azimuthal collimation of long range rapidity correlations by strong color fields in high multiplicity hadron-hadron collisions
• A fully dynamical simulation of central nuclear collisions
• Measurement of long-range angular correlation and quadrupole anisotropy of pions and (anti)protons in central $d$$+$Au collisions at $\sqrt{s_{{}_{NN}}}$=200 GeV
• Measurements of elliptic and triangular flow in high-multiplicity ${}^3$He$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Spectra and ratios of identified particles in Au+Au and d+Au collisions at sqrt(s_NN)=200 GeV
• Determining Fundamental Properties of Matter Created in Ultrarelativistic Heavy-Ion Collisions
• Evidence for flow in pPb collisions at 5 TeV from v2 mass splitting
• Exploiting Intrinsic Triangular Geometry in Relativistic He3+Au Collisions to Disentangle Medium Properties
• Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies
• Collectivity and electromagnetic radiation in small systems
• Mass ordering of spectra from fragmentation of saturated gluon states in high multiplicity proton-proton collisions
• Transverse energy production and charged-particle multiplicity at midrapidity in various systems from $\sqrt{s_{NN}}=7.7$ to 200 GeV
• Centrality categorization for R_{p(d)+A} in high-energy collisions
• Predictions for $\sqrt{s_{NN}}=5.02$ TeV Pb+Pb Collisions from a Multi-Phase Transport Model
• Particle spectra and HBT radii for simulated central nuclear collisions of C+C, Al+Al, Cu+Cu, Au+Au, and Pb+Pb from Sqrt(s)=62.4-2760 GeV
• Deviation from quark-number scaling of the anisotropy parameter v_2 of pions, kaons, and protons in Au+Au collisions at sqrt(s_NN) = 200 GeV
• Long-range azimuthal correlations in proton-proton and proton-nucleus collisions from the incoherent scattering of partons
• Measurement of long-range angular correlations and azimuthal anisotropies in high-multiplicity $p$$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• 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
• Single electron yields from semileptonic charm and bottom hadron decays in Au$+$Au collisions at $\sqrt{s_{NN}}=200$ GeV
• The PHENIX Forward Silicon Vertex Detector
• Exploring the Beam Energy Dependence of Flow-Like Signatures in Small System $d+$Au Collisions
• Measurements of directed, elliptic, and triangular flow in Cu$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Pre-Equilibrium Radial Flow from Central Shock-Wave Collisions in AdS5
• Collective effects in light-heavy ion collisions
• Origin of the mass splitting of elliptic anisotropy in a multiphase transport model

Cited by in corpus (16)

• Estimating initial state and quark-gluon plasma medium properties using a hybrid model with nucleon substructure calibrated to $p$-Pb and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Shrinking the Quark Gluon Plasma
• Relativistic Fluid Dynamics In and Out of Equilibrium -- Ten Years of Progress in Theory and Numerical Simulations of Nuclear Collisions
• ${}^{16}{\mathrm{O}}^{16}\mathrm{O}$ at RHIC and the LHC comparing $\alpha$ clustering vs substructure
• System size scan of D meson $R_{\text{AA}}$ and $v_n$ using PbPb, XeXe, ArAr, and OO collisions at LHC
• Kinematic dependence of azimuthal anisotropies in $p$$+$Au, $d$$+$Au, ${}^3$He+Au at $\sqrt{s_{{}_{NN}}}$ = 200 GeV
• Causal, stable first-order viscous relativistic hydrodynamics with ideal gas microphysics
• Two-particle angular correlations in pp and p-Pb collisions at LHC energies from a multi-phase transport model
• Probing QGP with flow: An experimental overview
• Study of $\varphi$-meson production in $p$$+$Al, $p$$+$Au, $d$$+$Au, and ${}^3$He$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Observation of $\Lambda$ hyperon local polarization in pPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• Effect of temperature gradient on heavy quark anti-quark potential using gravity dual model
• Observation of long-range collective flow in OO and NeNe collisions and implications for nuclear structure studies
• Ultracentral Collisions of Small and Deformed Systems at RHIC: $UU$, $dAu$, ${}^{9}BeAu$, ${}^{9}Be{}^{9}Be$, ${}^{3}He{}^{3}He$, and ${}^{3}HeAu$ Collisions
• PHENIX results on collectivity in small systems
• Latest results from RHIC + Progress on determining $\hat{q}L$ in RHI collisions using di-hadron correlations