Centrality dependence of suppression (1)

• p0 suppression vs Npart:

• Peripheral (60-92%) consistent with collision scaling.

• Gradual or abrupt suppression pattern not conclusive at this point.

• RAA < 1 (2sigma) for 50-60% centrality: Npart ~ 50 ± 15 (ball-park of parton percolation predictions ?)

• p0 suppression vs eBjorken:

• (t0 = 1 fm/c)

• ET measured in EMCal. Overlap area from Glauber.

• Suppression at 50-60% centrality:

• eBjorken~ 1.2 GeV/fm3

Notes: