Conclusions

• We’ve studied dN/dh (entropy) up to ?sNN = 200 GeV

  • We see more entropy/Npart at RHIC than in pp
  • Entropy increase with energy is modest (and logarithmic?)…
  • The entropy increase is concentrated at mid-rapidity
    • “Feynman scaling” works over a broad range of h

• Other measurements:

  • Elliptic flow: Strong and h-dependent
  • Particle ratios are approaching small mB
  • Centrality dependence of dN/dh.

• Theoretical models are assimilating new data

  • None simultaneously describe full set of systematics!

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