Particle-Type Dependence of Azimuthal Anisotropy and Nuclear Modification of Particle Production in Au + Au Collisions at √SNN= 200 GeV

STAR Collaboration

doi:10.1103/PhysRevLett.92.052302

Particle-Type Dependence of Azimuthal Anisotropy and Nuclear Modification of Particle Production in Au + Au Collisions at √S_NN= 200 GeV

STAR Collaboration

Physics and Astronomy

University of Birmingham
Goethe University Frankfurt
Panjab University
Variable Energy Cyclotron Centre India
Kent State University
University of California at Davis
Joint Institute for Nuclear Research
University of Jammu
Indiana University Bloomington
Purdue University
Institut de Recherches Subatomiques
Ohio State University
Wayne State University
Yale University
University of Rajasthan
University of Washington
Brookhaven National Laboratory
Rice University
National Institute for Subatomic Physics
SUBATECH
Moscow Engineering Physics Institute
Argonne National Laboratory
Academia Sinica - Shanghai Institute of Nuclear Research
Lawrence Berkeley National Laboratory
Czech Academy of Sciences
University of Science and Technology of China
University of California at Los Angeles
Creighton University
University of Texas at Austin

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

577 Scopus citations

Abstract

We present STAR measurements of the azimuthal anisotropy parameter ν₂ and the binary-collision scaled centrality ratio R_CP for kaons and lambdas (Λ + Λ) at midrapidity in Au + Au collisions at √s_NN = 200 GeV. In combination, the ν₂ and R_CP particle-type dependencies contradict expectations from partonic energy loss followed by standard fragmentation in vacuum We establish p_T ≈ 5 GeV/c as the value where the centrality dependent baryon enhancement ends. The K0 and Λ + Λ¯ ν₂ values are consistent with expectations of constituent-quark-number scaling from models of hadron formation by parton coalescence or recombination.

Original language	English
Article number	052302
Pages (from-to)	523021-523026
Number of pages	6
Journal	Physical Review Letters
Volume	92
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.92.052302
State	Published - Feb 6 2004

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10.1103/PhysRevLett.92.052302

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@article{43cd568264e940c8a1301b8462d0005e,

title = "Particle-Type Dependence of Azimuthal Anisotropy and Nuclear Modification of Particle Production in Au + Au Collisions at √SNN= 200 GeV",

abstract = "We present STAR measurements of the azimuthal anisotropy parameter ν2 and the binary-collision scaled centrality ratio RCP for kaons and lambdas (Λ + Λ) at midrapidity in Au + Au collisions at √sNN = 200 GeV. In combination, the ν2 and RCP particle-type dependencies contradict expectations from partonic energy loss followed by standard fragmentation in vacuum We establish pT ≈ 5 GeV/c as the value where the centrality dependent baryon enhancement ends. The K0 and Λ + Λ¯ ν2 values are consistent with expectations of constituent-quark-number scaling from models of hadron formation by parton coalescence or recombination.",

author = "\{STAR Collaboration\} and J. Adams and C. Adler and Aggarwal, \{M. M.\} and Z. Ahammed and J. Amonett and Anderson, \{B. D.\} and M. Anderson and D. Arkhipkin and Averichev, \{G. S.\} and Badyal, \{S. K.\} and J. Balewski and O. Barannikova and Barnby, \{L. S.\} and J. Baudot and S. Bekele and Belaga, \{V. V.\} and R. Bellwied and J. Berger and Bezverkhny, \{B. I.\} and S. Bhardwaj and P. Bhaskar and Bhati, \{A. K.\} and H. Bichsel and A. Billmeier and Bland, \{L. C.\} and Blyth, \{C. O.\} and Bonner, \{B. E.\} and M. Botje and A. Boucham and A. Brandin and A. Bravar and Cadman, \{R. V.\} and Cai, \{X. Z.\} and H. Caines and \{Calder{\'o}n De La Barca S{\'a}nchez\}, M. and J. Carroll and J. Castillo and M. Castro and D. Cebra and P. Chaloupka and S. Chattopadhyay and Chen, \{H. F.\} and Y. Chen and Chernenko, \{S. P.\} and M. Cherney and A. Chikanian and B. Choi and W. Christie and Coffin, \{J. P.\} and J. Kiryluk",

note = "Publisher Copyright: {\textcopyright} 2004 The American Physical Society.",

year = "2004",

month = feb,

day = "6",

doi = "10.1103/PhysRevLett.92.052302",

language = "English",

volume = "92",

pages = "523021--523026",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "5",

}

TY - JOUR

T1 - Particle-Type Dependence of Azimuthal Anisotropy and Nuclear Modification of Particle Production in Au + Au Collisions at √SNN= 200 GeV

AU - STAR Collaboration

AU - Adams, J.

AU - Adler, C.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Amonett, J.

AU - Anderson, B. D.

AU - Anderson, M.

AU - Arkhipkin, D.

AU - Averichev, G. S.

AU - Badyal, S. K.

AU - Balewski, J.

AU - Barannikova, O.

AU - Barnby, L. S.

AU - Baudot, J.

AU - Bekele, S.

AU - Belaga, V. V.

AU - Bellwied, R.

AU - Berger, J.

AU - Bezverkhny, B. I.

AU - Bhardwaj, S.

AU - Bhaskar, P.

AU - Bhati, A. K.

AU - Bichsel, H.

AU - Billmeier, A.

AU - Bland, L. C.

AU - Blyth, C. O.

AU - Bonner, B. E.

AU - Botje, M.

AU - Boucham, A.

AU - Brandin, A.

AU - Bravar, A.

AU - Cadman, R. V.

AU - Cai, X. Z.

AU - Caines, H.

AU - Calderón De La Barca Sánchez, M.

AU - Carroll, J.

AU - Castillo, J.

AU - Castro, M.

AU - Cebra, D.

AU - Chaloupka, P.

AU - Chattopadhyay, S.

AU - Chen, H. F.

AU - Chen, Y.

AU - Chernenko, S. P.

AU - Cherney, M.

AU - Chikanian, A.

AU - Choi, B.

AU - Christie, W.

AU - Coffin, J. P.

AU - Kiryluk, J.

PY - 2004/2/6

Y1 - 2004/2/6

N2 - We present STAR measurements of the azimuthal anisotropy parameter ν2 and the binary-collision scaled centrality ratio RCP for kaons and lambdas (Λ + Λ) at midrapidity in Au + Au collisions at √sNN = 200 GeV. In combination, the ν2 and RCP particle-type dependencies contradict expectations from partonic energy loss followed by standard fragmentation in vacuum We establish pT ≈ 5 GeV/c as the value where the centrality dependent baryon enhancement ends. The K0 and Λ + Λ¯ ν2 values are consistent with expectations of constituent-quark-number scaling from models of hadron formation by parton coalescence or recombination.

AB - We present STAR measurements of the azimuthal anisotropy parameter ν2 and the binary-collision scaled centrality ratio RCP for kaons and lambdas (Λ + Λ) at midrapidity in Au + Au collisions at √sNN = 200 GeV. In combination, the ν2 and RCP particle-type dependencies contradict expectations from partonic energy loss followed by standard fragmentation in vacuum We establish pT ≈ 5 GeV/c as the value where the centrality dependent baryon enhancement ends. The K0 and Λ + Λ¯ ν2 values are consistent with expectations of constituent-quark-number scaling from models of hadron formation by parton coalescence or recombination.

UR - https://www.scopus.com/pages/publications/3843147624

U2 - 10.1103/PhysRevLett.92.052302

DO - 10.1103/PhysRevLett.92.052302

M3 - Article

AN - SCOPUS:3843147624

SN - 0031-9007

VL - 92

SP - 523021

EP - 523026

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 052302

ER -

Particle-Type Dependence of Azimuthal Anisotropy and Nuclear Modification of Particle Production in Au + Au Collisions at √S_NN= 200 GeV

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