This paper presents v4β/v22β ratio as a function of transverse
momentum (ptβ), pseudorapidity (Ξ·) and collision centrality in Au+Au
collisions at sNNββ=200 GeV using the STAR detector at the
Relativistic Heavy Ion Collider (RHIC). It is found that v4β/v22β is
larger than Hydrodynamic calculations, the centrality and transverse dependence
of this ratio can not be fully described by Hydrodynamics, and the
pseudorapidity dependence is opposite to what one expects from Hydrodynamics.
The ptβ dependence of v1β is also presented. It is found that
v1β(ptβ) for β£Ξ·β£<1.3 changes sign, and two possible explanations of
the sign change are discussed.Comment: 4 pages, 3 figures. CIPANP 06 proceedin