2010 Spring Log

Jet Shape Analysis

  • Jet Analysis

  • Get sells information.
    • getTowerIndices()
      • ieta()
      • iphi()

How to get calotower in jet?

CaloTower position

ieta eta range
1-21 0.00-1.83
22 1.83-1.93
23 1.93-2.04
24 2.04-2.17
25 2.17-2.32
26 2.32-2.50
27 2.50-2.65
28 2.65-3.00
29-40 3.00-5.00

Inclusive Jet Plots of Run 124120 at 2.36TeV

  • Inclusive Jet Plots of Run 124120 at 2.36TeV
  • Jet Algorithm : Iterative Cone 0.5
  • Jet pT cut : 10GeV/C

Jet Vertex




Jet Multiplicity

Jet pT Distribution

Jet eta Distribution

Jet eta-phi Distribution

Di-jet Events

Jet Shapes

  • Jet Consitituents
  • delta R

2.36TeV Jet Plot with MC

  • Inclusive Jet Plots of Run 124120 at 2.36TeV
  • Jet Algorithm : Iterative Cone 0.5
  • Jet pT cut : 10GeV/C
  • 2.36TeV minbias MC : STARTUP3X_V80_2360GeV-v1

Jet Multiplicity (mc normalized to data/1.0)

Jet pT Distribution (mc normalized to data/1.0)

Jet eta Distribution (mc normalized to data/0.5)

Jet Shapes

9 Mar 2010

Study of Jet shapes

  • main systematic errors
    • Strong magnetic -> charged particle
    • Non linear and non uniform calorimeter response to hadron
    • Transverse sizes of hadron showers and calorimeter towers led to smearing of jet transverse structure
    • Quark-jet and Gluon-jet

12 Mar 2010

MC Study Plan

Parton Shower Fragmentation #
Angular Ordering Frag. Model
ON String 1
ON Independent 2
OFF String 3
OFF Independent 4

4 Case MC data sample generated.

Di-Jet Events Selection

  • Selection 1 : selct 2 jet event
  • selcetion 2 : calculate angle of 2 jets, select event which is angle of 2 jets lager than 170degree

15 Mar 2010

Generation info.

  • pT min : 500GeV
  • pT max : 500GeV
  • Parton Shower : Angular Ordering ON
  • Fragmentation : String Model
  • 100,000 Events

Analysis info.

  • Iterative Cone 0.5 Gen Jet
  • pT cut : 10GeV

No Selection

2 Jet

Delta phi mean value is about 179.3

Delta phi cut

Result

Method Entries Efficiency Delta phi
No Selection 547,710 - -
2 Jet 9,658 1.76% over 170
Delta phi cut 69,326 12.66% over 170

25 Mar 2010

Jet constituents

this profile histogram presents average jet constituents of all inclusive jet.

Jet Transverse Angle

The Jet transvers angle is a angle between major axis of jet and eta axis on the eta-phi map

-- HyunYongKim - 07 Feb 2010

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng deltaphi.png r1 manage 10.9 K 2010-03-09 - 04:48 UnknownUser  
PNGpng dijetpt.png r1 manage 13.6 K 2010-03-09 - 04:48 UnknownUser  
PNGpng dr1_500.png r1 manage 12.6 K 2010-03-15 - 15:11 UnknownUser  
PNGpng dr2_500.png r1 manage 14.1 K 2010-03-15 - 15:12 UnknownUser  
PNGpng dr_500.png r1 manage 14.3 K 2010-03-15 - 15:11 UnknownUser  
PNGpng dr_phi.png r1 manage 9.5 K 2010-03-15 - 15:12 UnknownUser  
PNGpng etaphimap.png r1 manage 13.2 K 2010-03-09 - 04:47 UnknownUser  
PNGpng jet_consti.png r1 manage 13.7 K 2010-03-25 - 18:28 UnknownUser  
PNGpng jeteta.png r1 manage 11.5 K 2010-03-09 - 04:47 UnknownUser  
PNGpng jetpt.png r1 manage 12.8 K 2010-03-09 - 04:47 UnknownUser  
PNGpng jetshape.png r1 manage 14.8 K 2010-03-09 - 04:48 UnknownUser  
GIFgif jta.gif r1 manage 6.5 K 2010-03-25 - 18:18 UnknownUser  
PNGpng mc_dr.png r1 manage 14.4 K 2010-03-09 - 11:58 UnknownUser  
PNGpng mc_jeteta.png r1 manage 12.7 K 2010-03-09 - 11:58 UnknownUser  
PNGpng mc_jetpt.png r1 manage 14.4 K 2010-03-09 - 11:58 UnknownUser  
PNGpng mc_mul.png r1 manage 12.3 K 2010-03-09 - 11:57 UnknownUser  
PNGpng multi.png r1 manage 12.6 K 2010-03-09 - 04:47 UnknownUser  
PNGpng nut.png r1 manage 13.0 K 2010-03-09 - 04:48 UnknownUser  
PNGpng plane.png r1 manage 10.7 K 2010-03-25 - 18:19 UnknownUser  
PNGpng pvx.png r1 manage 7.2 K 2010-03-09 - 04:44 UnknownUser  
PNGpng pvy.png r1 manage 8.1 K 2010-03-09 - 04:45 UnknownUser  
PNGpng pvz.png r1 manage 7.2 K 2010-03-09 - 04:46 UnknownUser  
PNGpng vx.png r1 manage 12.5 K 2010-03-09 - 04:46 UnknownUser  
PNGpng vxy.png r1 manage 11.7 K 2010-03-09 - 04:46 UnknownUser  
PNGpng vy.png r1 manage 12.6 K 2010-03-09 - 04:46 UnknownUser  
PNGpng vz.png r1 manage 12.0 K 2010-03-09 - 04:46 UnknownUser  
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Topic revision: r7 - 2010-03-25 - HyunYongKim
 
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