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Summary (II)

Peripheral Au+Au collisions:
Within errors, 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, central d+Au, “p”+Au) at y = 0.
Cronin-like enhancement for p0 (small) and h± (larger) at y = 0.
Opposite behaviour of the centrality dependence of high pT production compared to Au+Au (y=0).
No dissapearance of away-side dijet correlations.
Factor ~2 suppression observed at forward rapidities y ≈ 3.

Data vs. theory:

pQCD-based final-state parton energy loss (“QGP”) models are clearly consistent with Au+Au, d+Au data at y=0 (though non-perturbative effects, e.g. quark recombination, are needed at intermediate pT).
Gluon saturation (“CGC”) effects may start to show up clearly at forward rapidities in d+Au (first insight of pQCD factorization breakdown at small-x ?)

Notes: