DESY 15 – 16 May

Monday 15 May

• Multiple interactions and non-linear screening effects in high energy hadronic collisions (S. Ostapchenko, FZ Karlsruhe)

Tuesday 16 May 

• Overview of experimental evidence for Multiple Interactions (H. Jung, DESY)

1. Some remarks on AGK rules (J. Bartels, Uni Hamburg)

2. summary of MI approach in Jimmy/HERWIG (S. Gieseke, Uni Karlsruhe)

3. Next Steps and Milestones

   1. Phenomenology: Data – MC comparisons
      x,Q2,eta grid: Multiplicity, Energy flow (Data/MC)
      Correlations of transverse energy over eta range
      diffraction: jet closest to rapidity gap (low beta, large Mx)
      CDF-like studies: transverse region – multiplicity and energy flow (Lluis Marti)

   2. Phenomenology of Multiple Interactions
      dependence on pt_cut (Agustin Sabio Vera)
      kt-factorization (Hannes Jung)
      soft and hard multiple interactions

      soft region (Serguei Ostapchenko)
      hard region: <n> -> Poisson distribution -> AGK rules

      studies with Jimmy (Stefan Gieseke)
      color connection and correlations between ladders (J. Bartels, Stefan Gieseke, Serguei Ostapchenko)
      jet production in Multiple Interactions (Michele Salvatore)