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

STAR Collaboration

Research output: Contribution to journalArticle

485 Citations (Scopus)

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.

Original languageEnglish
Article number052302
Pages (from-to)523021-523026
Number of pages6
JournalPhysical Review Letters
Volume92
Issue number5
StatePublished - Feb 6 2004

Fingerprint

Elementary Particles
Anisotropy
particle production
Vacuum
Genetic Recombination
anisotropy
collisions
kaons
partons
coalescing
baryons
fragmentation
energy dissipation
quarks
scaling
vacuum
augmentation

All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • Physics and Astronomy(all)

Cite this

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

In: Physical Review Letters, Vol. 92, No. 5, 052302, 06.02.2004, p. 523021-523026.

Research output: Contribution to journalArticle

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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 Cherney, {Michael G.} and A. Chikanian and B. Choi and W. Christie and Coffin, {J. P.} and Seger, {Janet E.}",
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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, Michael G.

AU - Chikanian, A.

AU - Choi, B.

AU - Christie, W.

AU - Coffin, J. P.

AU - Seger, Janet E.

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.

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JO - Physical Review Letters

JF - Physical Review Letters

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