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Overview

PHENIX high pT measurements :
- Charged hadrons, p0, and p,pbar in Au+Au, d+Au, p+p.

Au+Au vs p+p ― “hot & dense medium” vis-à-vis “vacuum”

2 most significant “discoveries” at RHIC:

“High pT hadron suppression” & “anomalous” baryon/meson ratio

sNN dependence of suppression

Magnitude and pT (and xT) dependence

Centrality dependence

Particle species dependence

d+Au vs p+p ― “cold” medium vis-à-vis “vacuum”

Role of “conventional” nuclear effects: Cronin, shadowing.

Data vs theory ― properties of underlying QCD matter:

Dense partonic medium (FSI): Parton energy loss + recombination.
Dense partonic medium (ISI): Gluon saturation.
Dense hadronic medium (FSI): Hadronic energy loss.

Summary & conclusions

Notes: