Pythia vs Alpgen jets.
1) CTEQ5L (Pythia Default)
2) CTEQ5L (Alpgen Generator)
Normalized to LUMI = 1 pb-1
Pythia: QCD_Pt_0_1000 samples for CMSSW_1_5_2 were used.
Alpgen: All Njets_0_5600 samples for CMSSW_1_6_7 were used.
Inclusive jets cross section:
Pythia - Alpgen on single plot:
Pythia - Alpgen RATIO: Pythia is 2 times larger!
Pythia vs Alpgen by RUTGERS
alpen on twiki