Run 9 200GeV Endcap Jet Pt Correction Test: New Production

First look at jet pt corrections in the Endcap using the new production and analysis trigger scheme ...

The plots below were created from the FF 05point simulation sample.

Figure 1: This figure shows the detector level jet Pt / particle level jet Pt ratio Vs the detector level jet detector eta for the JP2 trigger. The six pannels show different detector level jet Pt ranges: [5,10), [10,15),[15,20),[20,25),[25,30), and 30+.

 

Figure 2: Same as figure 1 but for JP1Lo trigger. Note that the JP1Lo trigger only looks at jets below 8.4 GeV so only the [5,10) pannel is filled.

Figure 3: Same as figure 1 but for JP1Hi trigger.

Figure 4: Same as figure 1 but for the UnJP2 trigger.

Figure 5: Same as figure 1 but for the UnJP1Lo trigger.

Figure 6: Same as figure 1 but for the UnJP1Hi trigger.

 

The above plots show some odd features. The first is that we see little drop off as the jets move into the endcap for many of the triggers and pt bins. The second is that the ratio in the barrel is systematically below 1 for several of the trigger configurations and pt bins.

To explore these issues, I have created plots using the 05 and 12 point branches. I have also created seperate samples using the RFF, FF, and RFF+FF field configurations.

The plots from the RFF+FF field configurations and 05 point branch is here.
The plots from the RFF+FF field configurations and 12 point branch is here.
The plots from the RFF field configuration and 05 point branch is here.
The plots from the RFF field configuration and 12 point branch is here.
The plots from the FF field configuration and 05 point branch is here.
The plots from the FF field configuration and 12 point branch is here.

 

In the pdfs, the first page shows the detector / particle jet pt ratio vs eta for each of the 6 trigger categories and a plot showing all trigger categories combined for all jet pt. The next pages show the detector level RT, the particle level RT, and the detector and particle level average RTs. The fifth page shows the det / par jet pt ratio vs eta for all trigger configurations combined split into 6 detector level jet pt bins. The next three pages again show the RT information. Page 9 shows the det / par jet pt ratio vs eta for the JP2 trigger configuration split into 6 detector level jet pt bins. The subsequent pages follow the same pattern for the JP1Lo, JP1Hi, UnJP2, UnJP1Lo, and UnJP1Hi triggers. The final seven pages show the det / par jet pt ratio vs eta for the 6 trigger configurations and all triggers combined but now divided into 6 particle level pt bins.

Notes:

The plots which combine all trigger categories show more dip as the jets move into the endcap. These plots (Page 5 of pdfs) can be compared to the plots in Figure 1 on this page which show the 12 and 5 point plots from the old simulation.

The 12 point branch ratio shows more dip than the 05 point branch for pretty much all categories as expected. The fact that we see more dip in the endcap in the 12 point branch seems to indicate that the lack of dip in the 05 point branch may not be due to a code bug. There appear to be large neutral fraction biases as the jets move into the endcap.

I still don't understand the reason for the low ratio in the barrel for some of the pt bins and triggers.