Abstract
Event-by-event correlations between and for different collision centralities are studied with hydrodynamics. For the more central collisions is better correlated with defined with relatively larger radial weight power , like . For the more peripheral collisions, prefers with relatively smaller , like . When the fluid viscosity is large, is better correlated with with large . For the most central collisions and for odd harmonics, since anisotropy is solely due to fluctuations, the scaled probability distributions of are universal. For noncentral collisions, the scaled probability distributions of with different radial weight power deviate from one another. defined with smaller has a wider scaled distribution and a larger scaled standard deviation, and is more consistent with the scaled distribution after hydrodynamic evolution in peripheral collisions. Hadronic rescattering widens the distribution in noncentral collisions, which contributes to the observed inconsistency between and distributions.
- Received 2 April 2015
- Revised 15 July 2015
DOI:https://doi.org/10.1103/PhysRevC.92.024904
©2015 American Physical Society