Multistrange Baryon Elliptic Flow in Au+Au Collisions at √s_NN=200 GeV

Author Info

STAR Collaboration
T.D. Gutierrez, University of California, DavisFollow

Recommended Citation

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.

Abstract

We report on the first measurement of elliptic flow ν₂(p_T) of multistrange baryons Ξ⁻+Ξ⁺ and Ω⁻+Ω⁺ in heavy-ion collisions. In minimum-bias Au+Au collisions at √s_NN=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 p_T 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.

Disciplines

Physics

Copyright

2005 American Physical Society.

Number of Pages

6

Publisher statement

This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Society.

NOTE: At the time of publication, the author Thomas Gutierrez was not yet affiliated with Cal Poly.