Related links

• L2e-gamma trigger effect: Py-CDF-Tune-A, Py-Perugia0, and pp2006 data comparison
• http://www.star.bnl.gov/HyperNews-star/get/emc2/3531/1.html
• http://www.star.bnl.gov/HyperNews-star/protected/get/phana/499.html

Monte-Carlo configuration

• Single photon in the EEMC (flat in eta, pt, phi)
• Narrow vertex distribution with sigma=1cm
• 10 muons thrown in Barrel (|eta|<0.5) to reconstruct vertex
• 3 muons thrown in each BBC (|eta|~4) to fire the trigger
• Run 6 L2e-gamma-trigger id = 137641
• STAR geometry tag: y2006h
• Photon cuts:
  1.1 < eta < 1.95
  3 < pt < 15 GeV
  0 < phi < 2pi

Trigger effect vs. thrown photon pt, eta, and energy

Figure 1:
Yields vs. thrown photon pt
left: Yields with (red) and without (black) L2e-gamma trigger condition
right: Yield ratio (with/without trigger)

Figure 2: Same as Fig. 1 vs. thrown eta

Figure 3: Same as Fig. 1 vs. thrown energy

Trigger effect vs. reconstructed energy in the EEMC (high tower, 2x1, 3x3, energy and total E_T)

Figure 4: Same as Fig. 1 vs. total reconstructed transverse energy

Figure 5: Same as Fig. 1 vs. reconstructed high tower energy

Figure 6: Same as Fig. 1 vs. reconstructed energy of the 2x1 tower cluster

Figure 7: Same as Fig. 1 vs. reconstructed energy of the 3x3 tower cluster