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Run 9 200GeV Dijet Cross Section Test

Updated on Wed, 2013-03-27 19:19. Originally created by pagebs on 2013-03-12 12:14.

First look at the dijet cross section ...

Here I look at the dijet cross section for events which had an L2JetHigh jet triggered (JP2-JP2, JP2-JP1Lo, JP2-UnJP2). The idea was to find the cross section for the easiest possible case, so I looked only at L2JetHigh triggers in the barrel (-0.8 to 0.8 in eta) correcting using only the Bin-by-Bin correction factor method.

 

Figure 1: This figure shows the data / simu comparisons for the jet pt spectrum, jet eta spectrum, and dijet mass spectrum.



Further data / simulation plots can be seen here.


Comparisons of the detector level, particle level, and truth level quantities can be seen here.

 
Figure 2: This figure shows the detector level, truth level, and raw data dijet mass spectra
 
 
Figure 3: This figure shows the correction factors (truth level / detector level) which will be applied to the raw data

Figure 4: This figure shows the particle level vs detector level dijet mass (response matrix). The only difference between the plots is the binning
 
 
 

Figure 5: The dijet cross section, data is in black and theory is in red. The data/theory ratio is shown below. Here I have assumed a integrated luminosity of 25 pb^-1. This is the 'best case' matching.

 

Figure 6: Same as figure 5, but now I use a better guess of the total integrated luminosity of my sample. The value I use is ~17.7 pb^-1.


 
 
Figure 7: Same as figure 6, but now an error in the application of the asymmetric pt cut to the theory curve has been fixed.

 
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