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Nuclear Effects in Au-Au Colliding and Monte-Carlo Simulation

Nuclear Effects in Au-Au Colliding and Monte-Carlo Simulation. Weitian Deng High Energy Physics Group Shandong University. leading particle suppressed. hadrons. q. q. ?. Hard Probes. Experiment Tools. Nuclear Modification Factor:. nucleon-nucleon cross section.

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Nuclear Effects in Au-Au Colliding and Monte-Carlo Simulation

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

  2. leading particle suppressed hadrons q q ? Hard Probes

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

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

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

  6. Pedestal&flow subtracted d+Au 0 90 180  Degrees

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

  8. RCP : Centrality dependence 62 GeV |h| < 0.5 62 GeV 0.5 < |h| < 0.9 200 GeV |h| < 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. pA collisions Spectators Participants Spectators Multi-Scattering b

  11. Corrected Splitting Function

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

  13. Diffracmentation or Coalescence?

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