Approved Plots for DØ Photon Analyses

• Inclusive Photon Cross section

  Cross Section paper as approved for publication in PRL; hep-ex/9912017, Fermilab-Conf-99/354-E.
  • Figure 1: discriminant
  • Figure 2: purity vs ET
  • Figure 3: cross section
  • Figure 4: (data-theory)/theory

• Event Displays

  Run 52557, Event 6264 - a central photon with forward jet

  • Calorimeter end-side view
  • Calorimeter lego plot
  • Calorimeter/tracker side view, E
  • Calorimeter/tracker side view, ET

  ---

• Diphoton Cross section and soft gluon resummation

  Final results from Wei Chen. The PRL is in preparation. Note that the NLO calculation best explains the data at high pT of the diphoton system (small delta phi) where events tend to have a hard jet. At small pT (large delta phi) the resummed calculation and PYTHIA both do a good job of describing the data.