Adams, J;
Adler, C;
Aggarwal, MM;
Ahammed, Z;
Amonett, J;
Anderson, BD;
Anderson, M;
... STAR Collaboration, .; + view all
(2004)
Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au plus Au collisions at root s(NN)=200 GeV.
PHYS REV LETT
, 92
(5)
, Article 052302. 10.1103/PhysRevLett.92.052302.
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Abstract
We present STAR measurements of the azimuthal anisotropy parameter v(2) and the binary-collision scaled centrality ratio R-CP for kaons and lambdas (Lambda+(Lambda) over bar) at midrapidity in Au+Au collisions at roots(NN)=200 GeV. In combination, the v(2) and R-CP particle-type dependencies contradict expectations from partonic energy loss followed by standard fragmentation in vacuum. We establish p(T)approximate to5 GeV/c as the value where the centrality dependent baryon enhancement ends. The K-S(0) and Lambda+(Lambda) over bar v(2) values are consistent with expectations of constituent-quark-number scaling from models of hadron formation by parton coalescence or recombination.
| Type: | Article |
|---|---|
| Title: | Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au plus Au collisions at root s(NN)=200 GeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.92.052302 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.92.052302 |
| Language: | English |
| Additional information: | © 2004 The American Physical Society |
| Keywords: | LARGE TRANSVERSE-MOMENTUM, ELLIPTIC FLOW, QCD, SIGNATURE, HADRONS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1324893 |
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