First page Back Continue Last page Overview Graphics
Global Results 2: Particle Multiplicity vs. centrality
[PRL 86, 3500 (2001), and QM2002]
dNch/dy constraints mechanisms of initial multi-particle production.
dNch/dy increases faster than linearly with centrality (Npart ):
- "Soft + hard" (HIJING, “minijet”): increased hard contribution (prop. to Ncoll )
- Initial-state gluon saturation (KLN): dNch/dy ~ dNgluon/dy ~ 1/as ~ NpartlnNpart
- Final-state gluon saturation (EKRT)
Notes: