Flow measurement
•Expectation:
¨Asymmetry in initial-state collision geometry
Þ ellipsoidal distribution in final state momentum distribution
•Estimate reaction
plane
•Clear signal
observed in |h|<2
•Currently extending
analysis to
use full coverage |h| < 5
¨Look for directed flow at large h
x
y
Reaction Plane
Particle Flow
Py’
Px’
