Published in Physical Review Letters, Volume 95, Issue 12, September 13, 2005, pages 122301-1-122301-6.
STAR is composed of 63 institutions from 13 countries, with a total of 611 collaborators. A variety of personnel participate in the collaboration, including students, university faculty and staff, national laboratory staff, and engineers.
For more information on the STAR Collaboration, visit https://www.star.bnl.gov
The definitive version is available at https://doi.org/10.1103/PhysRevLett.95.122301.
We report on the first measurement of elliptic flow ν2(pT) of multistrange baryons Ξ−+Ξ+ and Ω−+Ω+ 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 ν2 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.
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NOTE: At the time of publication, the author Thomas Gutierrez was not yet affiliated with Cal Poly.