Investigation of the linear and mode-coupled flow harmonics in Au+Au collisions at sNN = 200 GeV

STAR Collaboration

doi:10.1016/j.physletb.2020.135728

Investigation of the linear and mode-coupled flow harmonics in Au+Au collisions at s_NN = 200 GeV

STAR Collaboration

Brookhaven National Laboratory
AGH University of Krakow
Ohio State University
University of Kentucky
Joint Institute for Nuclear Research
Panjab University
Variable Energy Cyclotron Centre India
Russian Research Centre Kurchatov Institute
Moscow Engineering Physics Institute
Texas A&M University
Central China Normal University
Kent State University
Universidad de Tarapacá
University of California at Riverside
Stony Brook University
University of Houston
University of Jammu
Czech Technical University in Prague
Czech Academy of Sciences
Shandong University
Rice University
Yale University
University of California at Davis
University of California at Los Angeles
National Cheng Kung University
Fudan University
University of Science and Technology of China
Tsinghua University
Creighton University

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Flow harmonics (v_n) of the Fourier expansion for the azimuthal distributions of hadrons are commonly employed to quantify the azimuthal anisotropy of particle production relative to the collision symmetry planes. While lower order Fourier coefficients (v₂ and v₃) are more directly related to the corresponding eccentricities of the initial state, the higher-order flow harmonics (v_n>3) can be induced by a mode-coupled response to the lower-order anisotropies, in addition to a linear response to the same-order anisotropies. These higher-order flow harmonics and their linear and mode-coupled contributions can be used to more precisely constrain the initial conditions and the transport properties of the medium in theoretical models. The multiparticle azimuthal cumulant method is used to measure the linear and mode-coupled contributions in the higher-order anisotropic flow, the mode-coupled response coefficients, and the correlations of the event plane angles for charged particles as functions of centrality and transverse momentum in Au+Au collisions at nucleon-nucleon center-of-mass energy s_NN= 200 GeV. The results are compared to similar LHC measurements as well as to several viscous hydrodynamic calculations with varying initial conditions.

Original language	English
Article number	135728
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	809
DOIs	https://doi.org/10.1016/j.physletb.2020.135728
State	Published - Oct 10 2020

Keywords

Collectivity
Correlation
Shear viscosity

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10.1016/j.physletb.2020.135728

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@article{573edd0360d543359bb1faf619bfc9d6,

title = "Investigation of the linear and mode-coupled flow harmonics in Au+Au collisions at sNN = 200 GeV",

abstract = "Flow harmonics (vn) of the Fourier expansion for the azimuthal distributions of hadrons are commonly employed to quantify the azimuthal anisotropy of particle production relative to the collision symmetry planes. While lower order Fourier coefficients (v2 and v3) are more directly related to the corresponding eccentricities of the initial state, the higher-order flow harmonics (vn>3) can be induced by a mode-coupled response to the lower-order anisotropies, in addition to a linear response to the same-order anisotropies. These higher-order flow harmonics and their linear and mode-coupled contributions can be used to more precisely constrain the initial conditions and the transport properties of the medium in theoretical models. The multiparticle azimuthal cumulant method is used to measure the linear and mode-coupled contributions in the higher-order anisotropic flow, the mode-coupled response coefficients, and the correlations of the event plane angles for charged particles as functions of centrality and transverse momentum in Au+Au collisions at nucleon-nucleon center-of-mass energy sNN= 200 GeV. The results are compared to similar LHC measurements as well as to several viscous hydrodynamic calculations with varying initial conditions.",

keywords = "Collectivity, Correlation, Shear viscosity",

author = "\{STAR Collaboration\} and J. Adam and L. Adamczyk and Adams, \{J. R.\} and Adkins, \{J. K.\} and G. Agakishiev and Aggarwal, \{M. M.\} and Z. Ahammed and I. Alekseev and Anderson, \{D. M.\} and A. Aparin and Aschenauer, \{E. C.\} and Ashraf, \{M. U.\} and Atetalla, \{F. G.\} and A. Attri and Averichev, \{G. S.\} and V. Bairathi and K. Barish and A. Behera and R. Bellwied and A. Bhasin and J. Bielcik and J. Bielcikova and Bland, \{L. C.\} and Bordyuzhin, \{I. G.\} and Brandenburg, \{J. D.\} and Brandin, \{A. V.\} and J. Butterworth and H. Caines and \{Calder{\'o}n de la Barca S{\'a}nchez\}, M. and D. Cebra and I. Chakaberia and P. Chaloupka and Chan, \{B. K.\} and Chang, \{F. H.\} and Z. Chang and N. Chankova-Bunzarova and A. Chatterjee and D. Chen and Chen, \{J. H.\} and X. Chen and Z. Chen and J. Cheng and M. Cherney and M. Chevalier and S. Choudhury and W. Christie and X. Chu and R. Esha and J. Jia and R. Lacey",

note = "Publisher Copyright: {\textcopyright} 2020 The Author(s)",

year = "2020",

month = oct,

day = "10",

doi = "10.1016/j.physletb.2020.135728",

language = "English",

volume = "809",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

}

TY - JOUR

T1 - Investigation of the linear and mode-coupled flow harmonics in Au+Au collisions at sNN = 200 GeV

AU - STAR Collaboration

AU - Adam, J.

AU - Adamczyk, L.

AU - Adams, J. R.

AU - Adkins, J. K.

AU - Agakishiev, G.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Alekseev, I.

AU - Anderson, D. M.

AU - Aparin, A.

AU - Aschenauer, E. C.

AU - Ashraf, M. U.

AU - Atetalla, F. G.

AU - Attri, A.

AU - Averichev, G. S.

AU - Bairathi, V.

AU - Barish, K.

AU - Behera, A.

AU - Bellwied, R.

AU - Bhasin, A.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Bland, L. C.

AU - Bordyuzhin, I. G.

AU - Brandenburg, J. D.

AU - Brandin, A. V.

AU - Butterworth, J.

AU - Caines, H.

AU - Calderón de la Barca Sánchez, M.

AU - Cebra, D.

AU - Chakaberia, I.

AU - Chaloupka, P.

AU - Chan, B. K.

AU - Chang, F. H.

AU - Chang, Z.

AU - Chankova-Bunzarova, N.

AU - Chatterjee, A.

AU - Chen, D.

AU - Chen, J. H.

AU - Chen, X.

AU - Chen, Z.

AU - Cheng, J.

AU - Cherney, M.

AU - Chevalier, M.

AU - Choudhury, S.

AU - Christie, W.

AU - Chu, X.

AU - Esha, R.

AU - Jia, J.

AU - Lacey, R.

PY - 2020/10/10

Y1 - 2020/10/10

N2 - Flow harmonics (vn) of the Fourier expansion for the azimuthal distributions of hadrons are commonly employed to quantify the azimuthal anisotropy of particle production relative to the collision symmetry planes. While lower order Fourier coefficients (v2 and v3) are more directly related to the corresponding eccentricities of the initial state, the higher-order flow harmonics (vn>3) can be induced by a mode-coupled response to the lower-order anisotropies, in addition to a linear response to the same-order anisotropies. These higher-order flow harmonics and their linear and mode-coupled contributions can be used to more precisely constrain the initial conditions and the transport properties of the medium in theoretical models. The multiparticle azimuthal cumulant method is used to measure the linear and mode-coupled contributions in the higher-order anisotropic flow, the mode-coupled response coefficients, and the correlations of the event plane angles for charged particles as functions of centrality and transverse momentum in Au+Au collisions at nucleon-nucleon center-of-mass energy sNN= 200 GeV. The results are compared to similar LHC measurements as well as to several viscous hydrodynamic calculations with varying initial conditions.

AB - Flow harmonics (vn) of the Fourier expansion for the azimuthal distributions of hadrons are commonly employed to quantify the azimuthal anisotropy of particle production relative to the collision symmetry planes. While lower order Fourier coefficients (v2 and v3) are more directly related to the corresponding eccentricities of the initial state, the higher-order flow harmonics (vn>3) can be induced by a mode-coupled response to the lower-order anisotropies, in addition to a linear response to the same-order anisotropies. These higher-order flow harmonics and their linear and mode-coupled contributions can be used to more precisely constrain the initial conditions and the transport properties of the medium in theoretical models. The multiparticle azimuthal cumulant method is used to measure the linear and mode-coupled contributions in the higher-order anisotropic flow, the mode-coupled response coefficients, and the correlations of the event plane angles for charged particles as functions of centrality and transverse momentum in Au+Au collisions at nucleon-nucleon center-of-mass energy sNN= 200 GeV. The results are compared to similar LHC measurements as well as to several viscous hydrodynamic calculations with varying initial conditions.

KW - Collectivity

KW - Correlation

KW - Shear viscosity

UR - https://www.scopus.com/pages/publications/85090403270

U2 - 10.1016/j.physletb.2020.135728

DO - 10.1016/j.physletb.2020.135728

M3 - Article

AN - SCOPUS:85090403270

SN - 0370-2693

VL - 809

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135728

ER -

Investigation of the linear and mode-coupled flow harmonics in Au+Au collisions at s_NN = 200 GeV

Abstract

Keywords

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