2010.06.18 L2e-gamma trigger effect: Py-CDF-Tune-A, Py-Perugia0, and pp2006 data comparison

Related posts

• Pythia and BFC filter QA vs. gamma candidate pt and eta
• L2e-gamma trigger effect with old Monte-Carlo (before EEMC geometry fix)

Data samples and colour coding

1. black circles: pp2006 data
2. open green: MC-QCD-TuneA, partonic pt 4-35
3. solid green:  MC-QCD-Perugia0, partonic pt 4-35
4. open red MC-prompt-photon-TuneA, partonic pt 3-35
5. solid red MC-prompt-photon-Perugia0, partonic pt 3-35

Event selection

1. di-jets from the cone jet-finder algorithm
2. photon and jet are opposite in phi:
      cos (phi_gamma-phi_jet) < -0.8
3. pt away side jet > 5GeV
4. detector eta of the away side jet: |eta_jet_det| < 0.8
5. data: L2e-gamma triggered events
6. No trigger emulation in Monte-Carlo yet
7. MC scaled to 3.164^pb based on Pythia luminosity (no fudge factors)

Figure 1: Reconstructed photon candidate pt, pt_gamma (no cut on pt_gamma, pt_jet > 5GeV)

Figure 2: Same as Fig. 1 with L2e-gamma condition simulated in Monte-Carlo

Figure 3: Same as Fig. 1, added distribution for photon pt from geant record (prompt photon MC only)

Figure 4: raw jet pt from jet trees: QCD pt=6-9
upper plot: mit0043 M. Betancourt simulations (MIT Simulation Productions)
bottom plot: new filtered MC