1. Nuclear Effects in Au-Au Colliding and Monte-Carlo Simulation Weitian Deng High Energy Physics Group Shandong University

2. Hard Probes hadrons leading particle suppressed q q ?

3. /  inel p+p nucleon-nucleon cross section Nuclear Modification Factor: If R = 1 here, nothing new going on Experiment Tools

4. Initial or Final ? Initial state? Final state?

5. Initial or Final ? Turn off final state  d+Au collisions  Central Vs. Peripheral

6. Pedestal&flow subtracted 090180  Degrees d+Au

7. Central Vs. Peripheral 200 GeV |  | < 0.5 62 GeV |  | < 0.5 62 GeV 0.5 < |  | < 0.9

8. R CP : Centrality dependence 62 GeV |  | < 0.5 62 GeV 0.5 < |  | < 0.9 200 GeV |  | < 0.5

9. Monte-Carlo Initial Effect Cronin Effect Pt broadening due to multi-scattering Final Effect Quenching Jet quenching due to Corrected splitting function

10. Multi-Scattering Participants Spectators pA collisions b

11. Corrected Splitting Function

15. Is Cronin effect only a initial effect? Direct Photon

16. Diffracmentation or Coalescence?