From:

http://drupal.star.bnl.gov/STAR/blog-entry/rjreed/2008/sep/10/upsilon-trigger-efficiency-calculation-pp2006-triggers-l0-trigger

Figure 1: L0 Trigger Efficiencies

L2 trigger algorithim: 3 tower cluster with E > 2.5 GeV, Max cos(q) = 0.5 ,Min inv mass = 6 GeV, Max inv mass = 15 GeV

There are 237 events where the L2 trigger is fired.   Efficiency = 237/392 = 60.5% +/- 5%

There are 236 events where the L2 trigger is fired with upsilon |y| < 1.  Efficiency = 61.8&% +/- 5.1%

There are 200 events where the L2 trigger fired for trigger ID 117602.  Efficiency = 200/313 = 63.9% +/- 5.8%

There are 200 events where the L2 trigger fired for trigger ID 117602 with upsilon |y|<1.  Efficiency = 200/307 = 65.1% +/- 5.9%

There are 109 events where the L2 trigger fired for trigger ID 137602.  Efficiency = 109/160 = 68.1% +/- 8.5%

There are 109 events where the L2 trigger fired for trigger ID 137602 with upsilon |y|<1.  Efficiency = 109/157 = 68.4% +/- 8.7%

Figure 2: L2 trigger efficiency statistics

Figure 3: Efficiency Trigger 117602

Figure 4: Efficiency trigger 117602

Figure 5: Efficiency trigger 137602

Figure 6: Efficiency trigger 137602

Figure 7: Both triggers plotted on top of each other

Figure 8: Both triggers plotted on top of each other