Abstract
The azimuthal anisotropy coefficients and of and mesons are measured in Au + Au collisions at GeV as a function of transverse momentum (1–14 GeV/) and centrality. The extracted coefficients are found to be consistent between the two meson species over the measured range. The ratio of for mesons is found to be independent of for 1–9 GeV/, implying a lack of sensitivity of the ratio to the change of underlying physics with . Furthermore, the ratio of is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
2 More- Received 18 September 2013
DOI:https://doi.org/10.1103/PhysRevC.88.064910
©2013 American Physical Society