Difference: AVFedotovLogA001 (1 vs. 6)

Revision 62009-12-04 - AlexanderFedotov

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META TOPICPARENT name="AVFedotovLogA"
-- AlexanderFedotov - 24-Nov-2009
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 Puprose of this study: try to see the jet scale recovery for probe jets as going from barrel region to HF, by looking at the evolution of the ET(probe jet) distribution.
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Input sample: 2009 PThat>30, 10 TeV Version 1, one root file QCD_Pt30_10TeV.hi_100.root with 70946 evs
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Input sample: 2009 PThat>30, 10 TeV Version 1 , one root file QCD_Pt30_10TeV.hi_100.root with 70946 evs
  Plots were made interactively with the script .

Revision 52009-11-25 - AlexanderFedotov

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META TOPICPARENT name="AVFedotovLogA"
-- AlexanderFedotov - 24-Nov-2009
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  eps
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Peak values are collectied in the table:
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Peak values are collected in the table:
 

Revision 42009-11-25 - AlexanderFedotov

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META TOPICPARENT name="AVFedotovLogA"
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 -- AlexanderFedotov - 24-Nov-2009

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It was found in in the Hcal Dijet Logbook page 1
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<!-- ########################  Section 1 #########################  -->

1. Intro

It was found in the Hcal Dijet Logbook page 1

 ( Sec.4.2.1 ) from the ET_peak / Pthat_threshold for tag jets in 2009 sample (PThat > 30) that the the uncorrected tag jet energy is underestimated by factor ~2. And the "unbiased" HF correction was found to be 0.50 (Sec.5.5). => It looks like the jet energy scale in HF is roughly correct.
Changed:
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Puprose of this study: try to see here the jet scale recovery for probe jets as going from barrel region to HF,
>
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Puprose of this study: try to see the jet scale recovery for probe jets as going from barrel region to HF,
 by looking at the evolution of the ET(probe jet) distribution.

Input sample: 2009 PThat>30, 10 TeV Version 1, one root file QCD_Pt30_10TeV.hi_100.root with 70946 evs

Changed:
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Plots made interactively with the script .
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Plots were made interactively with the script .

<!-- ########################  Section 2 #########################  -->

2. Probe jet only

  The < ET > vs iEta plot:
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  • ET growth in HF as |iEta| increases, stops at |iEta| ~34, and changes to a fall off. This must be a reflection of boudary condition E(true probe jet) < E(beam), thus only the lowest values of ET(probe) get allowed in this region. For the same reason, a third jet contribution may become more important near this boundary.

The ET distributions are shown below for 7 bins in |iEta|. The peak positions as found by the standard root peak finder (function ShowPeaks ) are marked with red triangles.

 
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  eps
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The ET peak values from the above plots are tabulated below:

 
iEta range Peak ET / GeV peak(1-9) /
peak(iEta)
1-9 14.5 1.000
Line: 55 to 90
 
36-40 24.1 0.602
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  • ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif:
    ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif
 
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  • we do not get .50 , rather .60 only
  • are numerous cutoffs applied in the calibrtion, important? May well be...

<!-- ########################  Section 3 #########################  -->

3. Selecting η(tag) < 1 . Zooming HF region. Use tag jet directly for a probe in HF.

Now we add cutoff η(tag jet) < 1, used in calibration normally.

Probe jet ET :


Original size: gif , eps

  • In HF region, the average ET is only few percent bigger than on the plot w/o η cutoff . This seems to be insignificant.

Tag jet ET but still vs probe jet iEta:


Original size: gif , eps

  • The average ET( tag jet) in HF region (~20 GeV) is ~10% lower than ET( probe ) on the very first plot ( ~22 GeV at |iEta| <=12 ) .
  • What about the shape of the ET(tag) distribution relative to the ET(probe) one:
    • does it shrink?
    • does the peak value move?

Let us see:


Original size: gif , eps

Peak values are collectied in the table:

iEta range Peak ET(tag) / GeV Peak ET(probe) / GeV peak_tag /
peak_probe
31-35 15.3 24.1 0.635
36-40 14.4 24.3 0.593

  • Nothing good! We still get ~0.6 but not 0.5
  • Peak method seems to be quite imprecise.
  • Other cuts may be much more important than η < 1 ( e.g. ET(third jet) < 5 is a very stong one!)


 
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  • TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif:
    TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif
 
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META FILEATTACHMENT attachment="ProbeJet.Mean_ET_vs_iEta.gif" attr="" comment="" date="1259092394" name="ProbeJet.Mean_ET_vs_iEta.gif" path="ProbeJet.Mean_ET_vs_iEta.gif" size="13582" stream="ProbeJet.Mean_ET_vs_iEta.gif" tmpFilename="/usr/tmp/CGItemp13931" user="fedotov" version="1"
META FILEATTACHMENT attachment="ProbeJet.Mean_ET_vs_iEta.eps" attr="" comment="" date="1259092440" name="ProbeJet.Mean_ET_vs_iEta.eps" path="ProbeJet.Mean_ET_vs_iEta.eps" size="19504" stream="ProbeJet.Mean_ET_vs_iEta.eps" tmpFilename="/usr/tmp/CGItemp13921" user="fedotov" version="1"
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META FILEATTACHMENT attachment="ProbeJet.ET_in_iEta_bins.eps" attr="" comment="" date="1259092847" name="ProbeJet.ET_in_iEta_bins.eps" path="ProbeJet.ET_in_iEta_bins.eps" size="53869" stream="ProbeJet.ET_in_iEta_bins.eps" tmpFilename="/usr/tmp/CGItemp13954" user="fedotov" version="1"
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META FILEATTACHMENT attachment="rd_tree2.C" attr="" comment="" date="1259119793" name="rd_tree2.C" path="rd_tree2.C" size="6440" stream="rd_tree2.C" tmpFilename="/usr/tmp/CGItemp13822" user="fedotov" version="1"
 
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META FILEATTACHMENT attachment="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" attr="" comment="" date="1259120097" name="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" path="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" size="19804" stream="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" tmpFilename="/usr/tmp/CGItemp13861" user="fedotov" version="1"
META FILEATTACHMENT attachment="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" attr="" comment="" date="1259120139" name="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" path="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" size="15672" stream="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" tmpFilename="/usr/tmp/CGItemp13842" user="fedotov" version="1"
META FILEATTACHMENT attachment="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" attr="" comment="" date="1259120225" name="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" path="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" size="19183" stream="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" tmpFilename="/usr/tmp/CGItemp13753" user="fedotov" version="1"
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META FILEATTACHMENT attachment="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.gif" attr="" comment="" date="1259127208" name="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.gif" path="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.gif" size="38335" stream="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.gif" tmpFilename="/usr/tmp/CGItemp13870" user="fedotov" version="1"
META FILEATTACHMENT attachment="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.eps" attr="" comment="" date="1259127331" name="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.eps" path="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.eps" size="33074" stream="etaTag_lt_1.Tag_And_Probe_ET_in_HF_bins.eps" tmpFilename="/usr/tmp/CGItemp13881" user="fedotov" version="1"

Revision 32009-11-25 - AlexanderFedotov

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META TOPICPARENT name="AVFedotovLogA"
Deleted:
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 -- AlexanderFedotov - 24-Nov-2009

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Average and Peak ET
of probe jet vs iEta

Deleted:
<
<
 
Added:
>
>
It was found in in the Hcal Dijet Logbook page 1 ( Sec.4.2.1 ) from the ET_peak / Pthat_threshold for tag jets in 2009 sample (PThat > 30) that the the uncorrected tag jet energy is underestimated by factor ~2. And the "unbiased" HF correction was found to be 0.50 (Sec.5.5). => It looks like the jet energy scale in HF is roughly correct.

Puprose of this study: try to see here the jet scale recovery for probe jets as going from barrel region to HF, by looking at the evolution of the ET(probe jet) distribution.

Input sample: 2009 PThat>30, 10 TeV Version 1, one root file QCD_Pt30_10TeV.hi_100.root with 70946 evs

Plots made interactively with the script .

The < ET > vs iEta plot:


Original size: gif , eps
 
Deleted:
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Deleted:
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Deleted:
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Original size: gif , eps
 
Added:
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Changed:
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iEta range Peak ET / GeV
1-9 14.5
10-16 13.5
17-19 12.4
20-25 16.4
26-29 19.2
30-35 23.1
36-40 24.1
>
>
iEta range Peak ET / GeV peak(1-9) /
peak(iEta)
1-9 14.5 1.000
10-16 13.5 1.074
17-19 12.4 1.169
20-25 16.4 0.884
26-29 19.2 0.755
30-35 23.1 0.628
36-40 24.1 0.602

  • ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif:
    ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif

  • TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif:
    TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif

 
META FILEATTACHMENT attachment="ProbeJet.Mean_ET_vs_iEta.gif" attr="" comment="" date="1259092394" name="ProbeJet.Mean_ET_vs_iEta.gif" path="ProbeJet.Mean_ET_vs_iEta.gif" size="13582" stream="ProbeJet.Mean_ET_vs_iEta.gif" tmpFilename="/usr/tmp/CGItemp13931" user="fedotov" version="1"
META FILEATTACHMENT attachment="ProbeJet.Mean_ET_vs_iEta.eps" attr="" comment="" date="1259092440" name="ProbeJet.Mean_ET_vs_iEta.eps" path="ProbeJet.Mean_ET_vs_iEta.eps" size="19504" stream="ProbeJet.Mean_ET_vs_iEta.eps" tmpFilename="/usr/tmp/CGItemp13921" user="fedotov" version="1"
META FILEATTACHMENT attachment="ProbeJet.ET_in_iEta_bins.gif" attr="" comment="" date="1259092484" name="ProbeJet.ET_in_iEta_bins.gif" path="ProbeJet.ET_in_iEta_bins.gif" size="41462" stream="ProbeJet.ET_in_iEta_bins.gif" tmpFilename="/usr/tmp/CGItemp14028" user="fedotov" version="1"
META FILEATTACHMENT attachment="ProbeJet.ET_in_iEta_bins.eps" attr="" comment="" date="1259092847" name="ProbeJet.ET_in_iEta_bins.eps" path="ProbeJet.ET_in_iEta_bins.eps" size="53869" stream="ProbeJet.ET_in_iEta_bins.eps" tmpFilename="/usr/tmp/CGItemp13954" user="fedotov" version="1"
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META FILEATTACHMENT attachment="rd_tree2.C" attr="" comment="" date="1259092929" name="rd_tree2.C" path="rd_tree2.C" size="5819" stream="rd_tree2.C" tmpFilename="/usr/tmp/CGItemp13813" user="fedotov" version="1"
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META FILEATTACHMENT attachment="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif" attr="" comment="" date="1259120040" name="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif" path="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif" size="15752" stream="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif" tmpFilename="/usr/tmp/CGItemp13844" user="fedotov" version="1"
META FILEATTACHMENT attachment="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" attr="" comment="" date="1259120097" name="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" path="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" size="19804" stream="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps" tmpFilename="/usr/tmp/CGItemp13861" user="fedotov" version="1"
META FILEATTACHMENT attachment="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" attr="" comment="" date="1259120139" name="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" path="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" size="15672" stream="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" tmpFilename="/usr/tmp/CGItemp13842" user="fedotov" version="1"
META FILEATTACHMENT attachment="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" attr="" comment="" date="1259120225" name="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" path="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" size="19183" stream="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps" tmpFilename="/usr/tmp/CGItemp13753" user="fedotov" version="1"

Revision 22009-11-25 - AlexanderFedotov

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META TOPICPARENT name="AVFedotovLogA"
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Deleted:
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 -- AlexanderFedotov - 24-Nov-2009
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Average and Peak ET
of probe jet vs iEta

 
Line: 15 to 23
 
Added:
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iEta range Peak ET / GeV
1-9 14.5
10-16 13.5
17-19 12.4
20-25 16.4
26-29 19.2
30-35 23.1
36-40 24.1
 
META FILEATTACHMENT attachment="ProbeJet.Mean_ET_vs_iEta.gif" attr="" comment="" date="1259092394" name="ProbeJet.Mean_ET_vs_iEta.gif" path="ProbeJet.Mean_ET_vs_iEta.gif" size="13582" stream="ProbeJet.Mean_ET_vs_iEta.gif" tmpFilename="/usr/tmp/CGItemp13931" user="fedotov" version="1"
META FILEATTACHMENT attachment="ProbeJet.Mean_ET_vs_iEta.eps" attr="" comment="" date="1259092440" name="ProbeJet.Mean_ET_vs_iEta.eps" path="ProbeJet.Mean_ET_vs_iEta.eps" size="19504" stream="ProbeJet.Mean_ET_vs_iEta.eps" tmpFilename="/usr/tmp/CGItemp13921" user="fedotov" version="1"
META FILEATTACHMENT attachment="ProbeJet.ET_in_iEta_bins.gif" attr="" comment="" date="1259092484" name="ProbeJet.ET_in_iEta_bins.gif" path="ProbeJet.ET_in_iEta_bins.gif" size="41462" stream="ProbeJet.ET_in_iEta_bins.gif" tmpFilename="/usr/tmp/CGItemp14028" user="fedotov" version="1"

Revision 12009-11-24 - AlexanderFedotov

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META TOPICPARENT name="AVFedotovLogA"

-- AlexanderFedotov - 24-Nov-2009

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