2010.06.18 L2e-gamma trigger effect: Py-CDF-Tune-A, Py-Perugia0, and pp2006 data comparison
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Data samples and colour coding
- black circles: pp2006 data
- open green: MC-QCD-TuneA, partonic pt 4-35
- solid green: MC-QCD-Perugia0, partonic pt 4-35
- open red MC-prompt-photon-TuneA, partonic pt 3-35
- solid red MC-prompt-photon-Perugia0, partonic pt 3-35
Event selection
- di-jets from the cone jet-finder algorithm
- photon and jet are opposite in phi:
cos (phi_gamma-phi_jet) < -0.8
- pt away side jet > 5GeV
- detector eta of the away side jet: |eta_jet_det| < 0.8
- data: L2e-gamma triggered events
- No trigger emulation in Monte-Carlo yet
- 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)
![](/STAR/files/userfiles/133/image/2010/06/16/20100617_20100615_19_noPt1Cutpt2gt5_counts_ptGamma_logy1.png)
Figure 2: Same as Fig. 1 with L2e-gamma condition simulated in Monte-Carlo
![](/STAR/files/userfiles/133/image/2010/06/18/20100618_20100615_22_noPt1Cutpt2gt5_counts_ptGamma_logy1.png)
Figure 3: Same as Fig. 1, added distribution for photon pt from geant record (prompt photon MC only)
![](/STAR/files/userfiles/133/image/2010/06/21/20100621_20100615_19_noPt1Cutpt2gt5_counts_ptGammaGeant_vs_ptGammaReco_logy1.png)
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
![](/STAR/files/userfiles/133/image/2010/06/23/20100623_ConeJets12_mJets_jetPt_pp200_p6410EemcGammaFilter_QCD_y2006g_SL08c_mit0043.png)
![](/STAR/files/userfiles/133/image/2010/06/23/20100623_ConeJets12_mJets_mPt_20100518_QCD_pt6_9_pytune100.png)