(r3) AVFedotovLogA001 < Main

Main Web>TWikiUsers>AlexanderFedotov>AVFedotovLogA>AVFedotovLogA001 (revision 3) (raw view)~~EditAttachPDF~~

-- Main.AlexanderFedotov - 24-Nov-2009

<center> 

              |  <h1> Average and Peak ET <br> of probe jet vs iEta </h1>  |

</center> 

It was found in
 in  the [[CMS.HcalCalibrDiJetsLogbookEntry01][ Hcal !Dijet Logbook page 1  ]]
( [[CMS.HcalCalibrDiJetsLogbookEntry01#SecN4d2d1 ][ 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  [[%ATTACHURL%/rd_tree2.C][ script ]] .

The < ET > vs iEta plot:

<center>     
   <img src="%ATTACHURLPATH%/ProbeJet.Mean_ET_vs_iEta.gif"  width='400'  />
   <br>
   Original size:          [[%ATTACHURLPATH%/ProbeJet.Mean_ET_vs_iEta.gif ][ gif ]] , \
                                  [[%ATTACHURLPATH%/ProbeJet.Mean_ET_vs_iEta.eps ][ eps ]] 
</center> 




<center>     
   <img src="%ATTACHURLPATH%/ProbeJet.ET_in_iEta_bins.gif"  width='600'  />
   <br>
   Original size:          [[%ATTACHURLPATH%/ProbeJet.ET_in_iEta_bins.gif ][ gif ]] , \
                                  [[%ATTACHURLPATH%/ProbeJet.ET_in_iEta_bins.eps ][ eps ]] 
</center> 

</center> 
%TABLE{ tablerules="all"  databg="#ffffff" }%
|  *iEta range*  |  *Peak ET / GeV*  | *peak(1-9) / <br> 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 |
</center> 

   * ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif: <br />
     <img src="%ATTACHURLPATH%/ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif" alt="ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif" width='696' height='472' />

   * [[%ATTACHURL%/ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps][ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps]]: ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps

   * TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif: <br />
     <img src="%ATTACHURLPATH%/TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" alt="TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif" width='696' height='472' />

   * [[%ATTACHURL%/TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps][TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps]]: TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who
eps	ProbeJet.ET_in_iEta_bins.eps	r1	manage	52.6 K	2009-11-24 - 21:00	AlexanderFedotov
gif	ProbeJet.ET_in_iEta_bins.gif	r1	manage	40.5 K	2009-11-24 - 20:54	AlexanderFedotov
eps	ProbeJet.Mean_ET_vs_iEta.eps	r1	manage	19.0 K	2009-11-24 - 20:54	AlexanderFedotov
gif	ProbeJet.Mean_ET_vs_iEta.gif	r1	manage	13.3 K	2009-11-24 - 20:53	AlexanderFedotov
eps	ProbeJet_ET_vs_iEta_at_etaTag_lt_1.eps	r1	manage	19.3 K	2009-11-25 - 04:34	AlexanderFedotov
gif	ProbeJet_ET_vs_iEta_at_etaTag_lt_1.gif	r1	manage	15.4 K	2009-11-25 - 04:34	AlexanderFedotov
eps	TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.eps	r1	manage	18.7 K	2009-11-25 - 04:37	AlexanderFedotov
gif	TagJet_ET_vs_ProbeJet_iEta_at_etaTag_lt_1.gif	r1	manage	15.3 K	2009-11-25 - 04:35	AlexanderFedotov
c	rd_tree2.C	r1	manage	6.3 K	2009-11-25 - 04:29	AlexanderFedotov

Topic revision: r3 - 2009-11-25 - AlexanderFedotov

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