UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au plus Au collisions at root s(NN)=200 GeV

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. Green open access

[img]
Preview
PDF
1324893.pdf

Download (158kB)

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 > 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
Downloads since deposit
37Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item