Measurement of the Centrality Dependence of Charge Particle Pseudorapidity Density with the PHOBOS Detector

April 29, 2001

APS Meeting: Washington, DC

Page 3

The BIG Picture

•Entropy Production

•Thermal Equilibration

•Hadro-Chemistry

Charged Particle Density

C. Vale J12.004

Event Anisotropy - Flow

Particle Ratios

C. Henderson Q12.003

• Energy Dependence (vs. AGS/SPS Data)

• System Size (p+p, Npart Dependence)

Context: