2010.04.17 Pythia/BFC gamma-filter accaptance vs. gamma candidate pt, energy, and eta

Data sample used:
Pythia prompt photon Monte-Carlo (partonic pt bins are combined without weights)

Common event cuts:
reconstruct at least one gamma candidate, |v_z| <120, !=0 l2e-gamma-trigger=fired

Figure 1:

• upper panel:
  Number of candidates vs. gamma candidate pt for specific filter/trigger fired.
• lower panel:
  Pythia/bfc filter false rejection vs. gamma candidate pt
• left panel:
  Pythis (bfc) filter configured with seed=2.6 (3.4) and cluster=3.6 (4.5)
• right panel:
  Pythis (bfc) filter configured with seed=2.4 (2.8) and cluster=3.3 (3.8)

Figure 2: Same as Fig. 1 vs. gamma candidate energy

Figure 3: Same as Fig. 1 vs. gamma candidate pseudo-rapidity