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Summary (II)

Peripheral Au+Au collisions:
Behave effectively as p+p collisions plus Ncoll scaling (expected pQCD behaviour) for all species and for all observables !

d+Au collisions:

No suppression observed (min.bias, nor central d+Au).
Cronin-like enhancement for p0 (small) and h± (larger).
Opposite behaviour of the centrality dependence of high pT production compared to Au+Au.
No dissapearance of away-side dijet correlations.
No “cold” nuclear matter effects (strong saturation of nuclear PDFs) seem to explain high pT Au+Au suppression.

Data vs. theory:

pQCD-based final-state parton energy loss models (“QGP” models) seem to reproduce more aspects of the data (Au+Au, d+Au) than other approaches (though non-perturbative effects, e.g. q recombination, needed at interm. pT).

Final evidence of QGP @ RHIC requires yet to see medium effects on 2 other hard QCD probes: J/ψ & (thermal) photon signals. Stay tuned !

Notes: