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Title: Measurements of directed, elliptic, and triangular flow in Cu + Au collisions at s NN = 200 GeV

Journal Article · · Physical Review. C
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Measurements of anisotropic flowFourier coefficients (vn) for inclusive charged particles and identified hadrons π ±, K ±, p, and ¯p produced at midrapidity in Cu + Au collisions at √ sNN = 200 GeV are presented. The data were collected in 2012 by the PHENIX experiment at the Relativistic Heavy-Ion Collider (RHIC). The particle azimuthal distributions with respect to different-order symmetry planes n, for n = 1, 2, and 3 are studied as a function of transverse momentum pT over a broad range of collision centralities. Mass ordering, as expected from hydrodynamic flow, is observed for all three harmonics. The charged-particle results are compared with hydrodynamical and transport model calculations.We also compare these Cu + Au results with those in Cu + Cu and Au + Au collisions at the same √ sNN and find that the v2 and v3, as a function of transverse momentum, follow a common scaling with 1/(εnN 1/3 part ).

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC); Nuclear Science and Security Consortium; Univ. of California, Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
Contributing Organization:
PHENIX Collaboration
Grant/Contract Number:
SC0012704; NA0003180
OSTI ID:
1376094
Alternate ID(s):
OSTI ID: 1333609; OSTI ID: 1407969
Report Number(s):
BNL-113889-2017-JA
Journal Information:
Physical Review. C, Vol. 94, Issue 5; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

References (65)

New forms of QCD matter discovered at RHIC journal March 2005
Erratum: Energy and charged particle flow in 10.8 A GeV/ c Au+Au collisions [Phys. Rev. C 55 , 1420 (1997)] journal October 1997
Collision-geometry fluctuations and triangular flow in heavy-ion collisions journal May 2010
The RHIC zero degree calorimeters
  • Adler, C.; Denisov, A.; Garcia, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 470, Issue 3 https://doi.org/10.1016/s0168-9002(01)00627-1
journal September 2001
Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at s NN = 2.76 TeV journal April 2014
Glauber Modeling in High Energy Nuclear Collisions text January 2007
Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration text January 2004
A combinatorial Hough transform journal March 1990
Phase transition from hadron gas to quark-gluon plasma: influence of the stiffness of the nuclear equation of state journal February 1988
Measurement of the higher-order anisotropic flow coefficients for identified hadrons in Au + Au collisions at s N N = 200 GeV journal May 2016
Experimental and theoretical challenges in the search for the quark–gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions journal August 2005
The PHOBOS perspective on discoveries at RHIC journal August 2005
Beam fragmentation in heavy ion collisions with realistically correlated nuclear configurations journal April 2011
Formation of dense partonic matter in relativistic nucleus–nucleus collisions at RHIC: Experimental evaluation by the PHENIX Collaboration journal August 2005
Deviation from quark number scaling of the anisotropy parameter v 2 of pions, kaons, and protons in Au + Au collisions at s N N = 200 GeV journal June 2012
Beam Fragmentation in Heavy Ion Collisions with Realistically Correlated Nuclear Configurations text January 2010
Fate of the initial state perturbations in heavy ion collisions. III. The second act of hydrodynamics journal October 2011
Measurement of the elliptic anisotropy of charged particles produced in PbPb collisions at s N N = 2.76 TeV journal January 2013
Fluctuation Probes of Early-Time Correlations in Nuclear Collisions text January 2011
Measurement of the higher-order anisotropic flow coefficients for identified hadrons in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV text January 2014
Higher Harmonic Anisotropic Flow Measurements of Charged Particles in Pb-Pb Collisions at s N N = 2.76 TeV journal July 2011
PHENIX detector overview
  • Adcox, K.; Adler, S. S.; Aizama, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3 https://doi.org/10.1016/S0168-9002(02)01950-2
journal March 2003
Energy and charged particle flow in 1 0 . 8 A GeV/ c Au+Au collisions journal March 1997
The RHIC zero-degree calorimeters
  • Adler, C.; Denisov, A.; Garcia, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3 https://doi.org/10.1016/j.nima.2003.08.112
journal March 2003
Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions journal April 2014
The RHIC zero-degree calorimeters
  • Adler, C.; Denisov, A.; Garcia, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 461, Issue 1-3 https://doi.org/10.1016/s0168-9002(00)01238-9
journal April 2001
Methods for analyzing anisotropic flow in relativistic nuclear collisions journal September 1998
Initial fluctuation effect on harmonic flows in high-energy heavy-ion collisions journal December 2011
System Size, Energy, Pseudorapidity, and Centrality Dependence of Elliptic Flow journal June 2007
Fluctuation probes of early-time correlations in nuclear collisions journal January 2012
Higher flow harmonics from ( 3 + 1 ) D event-by-event viscous hydrodynamics journal February 2012
Event-by-event viscous hydrodynamics for Cu-Au collisions at 200GeV text January 2012
Translation of collision geometry fluctuations into momentum anisotropies in relativistic heavy-ion collisions journal December 2010
Flow study in relativistic nuclear collisions by Fourier expansion of azimuthal particle distributions journal May 1996
Event-by-event viscous hydrodynamics for Cu–Au collisions at <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">NN</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mtext> </mml:mtext><mml:mtext>GeV</mml:mtext></mml:math> journal October 2012
New Forms of QCD Matter Discovered at RHIC text January 2004
Beam-energy dependence of the directed flow of protons, antiprotons, and pions in au+au collisions text January 2014
Event-by-event shape and flow fluctuations of relativistic heavy-ion collision fireballs journal August 2011
Directed Flow of Charged Particles at Midrapidity Relative to the Spectator Plane in Pb-Pb Collisions at s NN = 2.76 TeV journal December 2013
Energy Dependence of Directed Flow over a Wide Range of Pseudorapidity in Au + Au Collisions at the BNL Relativistic Heavy Ion Collider journal July 2006
Elliptic flow of identified hadrons in Au+Au collisions at s NN = 7.7 –62.4 GeV journal July 2013
PHENIX central arm particle ID detectors
  • Aizawa, M.; Akiba, Y.; Begay, R.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3 https://doi.org/10.1016/S0168-9002(02)01953-8
journal March 2003
What RHIC experiments and theory tell us about properties of quark–gluon plasma? journal March 2005
Measurements of Higher Order Flow Harmonics in Au + Au Collisions at s N N = 200 GeV journal December 2011
Measurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector text January 2011
Glauber Modeling in High-Energy Nuclear Collisions journal November 2007
Third harmonic flow of charged particles in Au + Au collisions at s NN = 200  GeV journal July 2013
Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions text January 2005
Erratum: Collision-geometry fluctuations and triangular flow in heavy-ion collisions [Phys. Rev. C 81 , 054905 (2010)] journal September 2010
Flow Study in Relativistic Nuclear Collisions by Fourier Expansion of Azimuthal Particle Distributions text January 1994
Scaling Properties of Azimuthal Anisotropy in Au + Au and Cu + Cu Collisions at s NN = 200 GeV journal April 2007
Anisotropic flow in Cu + Au collisions at s NN = 200 GeV journal January 2006
Directed and elliptic flow of charged pions and protons in Pb + Pb collisions at 4 0 A and 1 5 8 A GeV journal September 2003
Elliptic flow from two- and four-particle correlations in Au+Au collisions at s NN = 130 GeV journal September 2002
Systematic studies of elliptic flow measurements in Au + Au collisions at s NN = 200 GeV journal August 2009
Multiphase transport model for relativistic heavy ion collisions journal December 2005
Azimuthal anisotropy relative to the participant plane from a multiphase transport model in central p + Au , d + Au , and He 3 + Au collisions at s N N = 200 GeV journal November 2015
Systematic study of azimuthal anisotropy in Cu + Cu and Au + Au collisions at s NN = 62.4 and 200 GeV journal September 2015
Spectra and ratios of identified particles in Au+Au and d +Au collisions at s N N = 200 GeV journal August 2013
Directed flow at midrapidity in event-by-event hydrodynamics journal June 2011
Elliptic Flow of Charged Particles in Pb-Pb Collisions at s N N = 2.76 TeV journal December 2010
Measurement of the azimuthal anisotropy for charged particle production in s N N = 2.76 TeV lead-lead collisions with the ATLAS detector journal July 2012
Triangularity and dipole asymmetry in relativistic heavy ion collisions journal June 2011
The RHIC Zero Degree Calorimeter text January 2000
Measurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead–lead collisions at <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mi mathvariant="normal">NN</mml:mi></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>2.76</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math> with the ATLAS detector journal February 2012

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Global hyperon polarization at local thermodynamic equilibrium with vorticity, magnetic field, and feed-down journal May 2017
Charge-Dependent Directed Flow in Cu+Au Collisions at sNN =200 GeV text January 2017
Charge-Dependent Directed Flow in Cu + Au Collisions at s N N = 200 GeV journal January 2017
Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems journal December 2019
Rotation of the QCD Plasma and the Chiral Vortical Effect book August 2019
Constraints on rapidity-dependent initial conditions from charged-particle pseudorapidity densities and two-particle correlations journal October 2017
Azimuthal anisotropy in Cu+Au collisions at s NN = 200 GeV journal July 2018
Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems text January 2019
Constraints on rapidity-dependent initial conditions from charged particle pseudorapidity densities and two-particle correlations text January 2016
Measurements of mass-dependent azimuthal anisotropy in central p + Au, d + Au, and He 3 + Au collisions at s N N = 200 GeV journal June 2018