2005/04/22 by J. R. Adams, STAR Collaboration, M. M. Aggarwal +99 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.1103/physrevlett.95.122301
published as Phys.Rev.Lett.95:122301,2005 · 6 pages, 3 figures, submitted to PRL
arxiv created 2005/04/22 · openalex publication_date 2005/09/13 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/07/30
We report on the first measurement of elliptic flow \ensuremathν2(pT) of multistrange baryons \ensuremathΞ^\ensuremath-+\ensuremathΞ+ and \ensuremathΩ^\ensuremath-+\ensuremathΩ+ in heavy-ion collisions. In minimum-bias Au+Au collisions at √sNN=200 GeV, a significant amount of elliptic flow, comparable to other nonstrange baryons, is observed for multistrange baryons which are expected to be particularly sensitive to the dynamics of the partonic stage of heavy-ion collisions. The pT dependence of \ensuremathν2 of the multistrange baryons confirms the number of constituent quark scaling previously observed for lighter hadrons. These results support the idea that a substantial fraction of the observed collective motion is developed at the early partonic stage in ultrarelativistic nuclear collisions at the Relativistic Heavy Ion Collider.