Summary (II)

• High pT data in central Au+Au collisions:

  • Strong suppression (factor ~ 4-5) of p0 and h± above pT~ 4 GeV/c (compared to p+p collisions).
  • No apparent suppression of (anti)protons in ~1-4 GeV/c: “anomalous” p/p ~ 0.8 ratio >> than in p+p and e+e- jet fragmentation.
  • Disappeareance of jet-like away-side azimuthal correlations.
  • Peripheral Au+Au collisions behave effectively as p+p collisions (i.e. as pQCD) for all species and for all observables.
  • High pT data in d+Au collisions:
    • No suppression observed in min. bias d+Au reactions.
    • Cronin-like enhancement for p0 (small) and h± (larger).
    • Opposite behaviour of the centrality dependence of high pT production compared to Au+Au.
    • No “cold” nuclear matter effects (strong saturation of nuclear PDFs) seem to explain high pT Au+Au suppression.
  • (Personal) Corollary: “We've got ~1/3 of QGP evidence at RHIC. Let's wait (not very long !) for the J/ψ and the photons ...”

Notes: