Collective Flow in Heavy Ion Collisions at CERN-SPS WA98

• Motivation
  • Softening of EOS
  • Flow in Single Particle Spectra
    • Feature of Transverse Distr.
    • Interpretation with Flow
    • Random Walk Approach
  • Definition of Flow
  • Geometrical Features of Flow
  • What is different at higher energy?
• Flow observed at AGS
  • Correlation between f & b calorimeters
  • Charged Particle Anisotropy
  • Proton vs Pion
  • Slope vs Flow angle
  • Results from E866
• Flow analysis at WA98
  • WA98 Collaboration
  • Plastic Ball
  • Two Arm spectrometer
    • Arm II Spectrometer
      • Phenix TOF at WA98
      • PID w TOF
  • Analysis of Plastic Ball
    • Direction of b
    • Sub-event analysis
      • Resolution of the Reaction Plane
    • Mixed-Event analysis
    • Proton Flow
    • Anti-flow of pions
    • Centrality Dependence
      • Comparison between AGS and SPS
    • Absorption Model
      • Centrality dep. of Ab. Model
    • Directed flow at target region
    • Beam energy dependence of Directed Flow
      • Smaller Directed Flow at SPS than AGS
  • Analysis of mid-rapidity spectrometer
    • Single particle spectra
    • Azimuthal angle distribution
      • Fourier Analysis
    • Beam energy dependence of Elliptic Flow
    • Intuitive Picture
    • Elliptic nucleon distribution at freeze out
    • HBT w.r.t. Reaction Plane
• Summary