Difference: AtlasMeeting_29_10_08 (1 vs. 8)

Revision 82008-11-11 - KennyWraight

Line: 1 to 1
 
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08

Line: 54 to 54
 
META FILEATTACHMENT attachment="AOD_analysis.ppt" attr="" comment="Kenny's talk in powerpoint format (should work on Linux)" date="1225305498" name="AOD_analysis.ppt" path="C:\Documents and Settings\Kené\Desktop\Talks\AOD_update.ppt" size="1020928" stream="C:\Documents and Settings\Kené\Desktop\Talks\AOD_update.ppt" tmpFilename="/usr/tmp/CGItemp33382" user="KennyWraight" version="2"
META FILEATTACHMENT attachment="cdf9402_HWW_30_V2.pdf" attr="" comment="CDF 3.0 fb dilepton higgs WW analysis" date="1225297611" name="cdf9402_HWW_30_V2.pdf" path="cdf9402_HWW_30_V2.pdf" size="5313708" stream="cdf9402_HWW_30_V2.pdf" tmpFilename="/usr/tmp/CGItemp37125" user="RichardStDenis" version="1"
Added:
>
>
META FILEATTACHMENT attachment="AOD_best.ppt" attr="" comment="better triggers and selection (but not right yet)" date="1226414243" name="AOD_best.ppt" path="C:\Documents and Settings\Kené\Desktop\Talks\AOD_best.ppt" size="1120256" stream="C:\Documents and Settings\Kené\Desktop\Talks\AOD_best.ppt" tmpFilename="/usr/tmp/CGItemp28704" user="KennyWraight" version="1"

Revision 72008-11-07 - KennyWraight

Line: 1 to 1
 
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08

Line: 10 to 10
 
14TeV 138.22 ± 0.16% 233.81 ± 1.0%
12TeV 98.18 ± 0.15% (0.74) 154.23 ± 0.99% (0.66)
10TeV 64.29 ± 0.16% (0.47) 92.09 ± 0.94% (0.39)
Changed:
<
<
1.96TeV    
>
>
1.96TeV (LHC pp) 0.37 ± 0.13% 0.15 ± 0.32%
1.96TeV (TeV ppbar) 1.47 ± 0.14% 0.44 ± 0.34%
  Problems I can think of so far with the analysis.

Revision 62008-11-06 - KennyWraight

Line: 1 to 1
 
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08

Line: 21 to 21
 -- KennyWraight - 29 Oct 2008


CDF Note on dilepton analysis. Cross sections on page 10.
Changed:
<
<
Modesigma x Br (Pb)
K Factor
FilterEffic
Wgamma->e nu Gamma 13.6 x 1.36
1.36 1
Wgamma->mu nu Gamma 13.6 x 1.36
1.36 1
Wgamma->tau nu Gamma
13.6x1.36
136 1
WW 1.27 1.0 1
WW@NLO 1.27 1.0 1
WZ0.365
1.0 0.76
ZZ
1.511 1.0 0.23
ttbar 6.7x0.1026 1.0 1
Z->ee355
1.4 1
Z->mumu 355 1.41
Z->tautau (mll>10)
1272 1.4 0.00713
Z->ee (mll<20)
>
>
Modesigma x Br (Pb)
K Factor
FilterEffic
Wgamma->e nu Gamma 13.6 x 1.36
1.36 1
Wgamma->mu nu Gamma 13.6 x 1.36
1.36 1
Wgamma->tau nu Gamma
13.6x1.36
136 1
WW 1.27 1.0 1
WW@NLO 1.27 1.0 1
WZ0.365
1.0 0.76
ZZ
1.511 1.0 0.23
ttbar 6.7x0.1026 1.0 1
Z->ee355
1.4 1
Z->mumu 355 1.41
Z->tautau (mll>10)
1272 1.4 0.00713
Z->ee (mll<20)
  920
1.4 0.0156
Z->ee(mll<20)
920 1.4 0.0156
Line: 30 to 30
  Wgamma produces a lepton plus a conversion lepton and the third lepton in the conversion is lost. This has a rapidity dependence since material increases with increasing |eta|. Same sign leptons are a good monitor of this background.
Changed:
<
<
The Drell Yan has a section below mll< 20 added to the mll>20 to get reasonable statistics for the spectrum down to mll of order 10-12 GeV. This is relevant for Higgs but perhaps not top.
>
>
The Drell Yan has a section below mll< 20 added to the mll>20 to get reasonable statistics for the spectrum down to mll of order 10-12 GeV. This is relevant for Higgs but perhaps not top.
  Cross sections taken at NLO are just given and those at LO with a k factor are indicated.
Line: 45 to 45
 
Total 130+-15
Data 139
Changed:
<
<
It is interesting to compare the 70 ttbar events in 3fb-1 at 1960 GeV to the 140 that Kenny has in his talk with 14000 GeV. It will be interesting to compare the background to those shown above.
>
>
It is interesting to compare the 70 ttbar events in 3fb-1 at 1960 GeV to the 140 that Kenny has in his talk with 14000 GeV. It will be interesting to compare the background to those shown above.
  The W+jet background is estimated from the data by taking dijet events, identifying one jet and asking how often the other passes loose lepton cuts compared to how often it passes full lepton id. This defines the fake probability. The single lepton sample is then searched and events with jets that are found to pass the loose lepton cuts are given a weight according to the measured probability. The kinematics and numbers of these events are then used in the analysis.

Revision 52008-10-29 - KennyWraight

Line: 1 to 1
 
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08

Line: 51 to 51
 
Changed:
<
<
META FILEATTACHMENT attachment="AOD_analysis.ppt" attr="" comment="Kenny's talk in powerpoint format (should work on Linux)" date="1225296878" name="AOD_analysis.ppt" path="C:\Documents and Settings\Kené\Desktop\Talks\AOD_analysis.ppt" size="1219584" stream="C:\Documents and Settings\Kené\Desktop\Talks\AOD_analysis.ppt" tmpFilename="/usr/tmp/CGItemp28602" user="KennyWraight" version="1"
>
>
META FILEATTACHMENT attachment="AOD_analysis.ppt" attr="" comment="Kenny's talk in powerpoint format (should work on Linux)" date="1225305498" name="AOD_analysis.ppt" path="C:\Documents and Settings\Kené\Desktop\Talks\AOD_update.ppt" size="1020928" stream="C:\Documents and Settings\Kené\Desktop\Talks\AOD_update.ppt" tmpFilename="/usr/tmp/CGItemp33382" user="KennyWraight" version="2"
 
META FILEATTACHMENT attachment="cdf9402_HWW_30_V2.pdf" attr="" comment="CDF 3.0 fb dilepton higgs WW analysis" date="1225297611" name="cdf9402_HWW_30_V2.pdf" path="cdf9402_HWW_30_V2.pdf" size="5313708" stream="cdf9402_HWW_30_V2.pdf" tmpFilename="/usr/tmp/CGItemp37125" user="RichardStDenis" version="1"

Revision 42008-10-29 - KennyWraight

Line: 1 to 1
 
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08

Line: 12 to 12
 
10TeV 64.29 ± 0.16% (0.47) 92.09 ± 0.94% (0.39)
1.96TeV    
Added:
>
>
Problems I can think of so far with the analysis.

*charge veto implimented in AOD too soon.

*muon isolation implimented in AOD too soon before electron definition.

 -- KennyWraight - 29 Oct 2008


CDF Note on dilepton analysis. Cross sections on page 10.

Revision 32008-10-29 - RichardStDenis

Line: 1 to 1
 
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08

Line: 12 to 12
 
10TeV 64.29 ± 0.16% (0.47) 92.09 ± 0.94% (0.39)
1.96TeV    
Deleted:
<
<
 -- KennyWraight - 29 Oct 2008
Added:
>
>

CDF Note on dilepton analysis. Cross sections on page 10.
Modesigma x Br (Pb)
K Factor
FilterEffic
Wgamma->e nu Gamma 13.6 x 1.36
1.36 1
Wgamma->mu nu Gamma 13.6 x 1.36
1.36 1
Wgamma->tau nu Gamma
13.6x1.36
136 1
WW 1.27 1.0 1
WW@NLO 1.27 1.0 1
WZ0.365
1.0 0.76
ZZ
1.511 1.0 0.23
ttbar 6.7x0.1026 1.0 1
Z->ee355
1.4 1
Z->mumu 355 1.41
Z->tautau (mll>10)
1272 1.4 0.00713
Z->ee (mll<20)

920

1.4 0.0156
Z->ee(mll<20)
920 1.4 0.0156

For WZ the W decays inclusively and the simluation is filtered for at least 2 leptons.For ZZ the Z's decay inclusively and the sample is filtered for at least 2 leptons. The reason for this is that WZ and ZZ produce dileptons through inefficiencies in the detector where 1 or 2 leptons are lost. For WZ one lepton may come from W and one from Z with a lepton from Z lost.

Wgamma produces a lepton plus a conversion lepton and the third lepton in the conversion is lost. This has a rapidity dependence since material increases with increasing |eta|. Same sign leptons are a good monitor of this background.

The Drell Yan has a section below mll< 20 added to the mll>20 to get reasonable statistics for the spectrum down to mll of order 10-12 GeV. This is relevant for Higgs but perhaps not top.

Cross sections taken at NLO are just given and those at LO with a k factor are indicated.

Section 11 has top analysis, with yields in table 31 on page 74. Here they are reproduced:

ttbar 70+-13
DY 28+-6
WW 16+-2
WZ 3+-0.5
ZZ 1.4+-0.2
W+jet 8.4+-2
Wgamma 1.8+-.5
Total 130+-15
Data 139

It is interesting to compare the 70 ttbar events in 3fb-1 at 1960 GeV to the 140 that Kenny has in his talk with 14000 GeV. It will be interesting to compare the background to those shown above.

The W+jet background is estimated from the data by taking dijet events, identifying one jet and asking how often the other passes loose lepton cuts compared to how often it passes full lepton id. This defines the fake probability. The single lepton sample is then searched and events with jets that are found to pass the loose lepton cuts are given a weight according to the measured probability. The kinematics and numbers of these events are then used in the analysis.

 
META FILEATTACHMENT attachment="AOD_analysis.ppt" attr="" comment="Kenny's talk in powerpoint format (should work on Linux)" date="1225296878" name="AOD_analysis.ppt" path="C:\Documents and Settings\Kené\Desktop\Talks\AOD_analysis.ppt" size="1219584" stream="C:\Documents and Settings\Kené\Desktop\Talks\AOD_analysis.ppt" tmpFilename="/usr/tmp/CGItemp28602" user="KennyWraight" version="1"
Added:
>
>
META FILEATTACHMENT attachment="cdf9402_HWW_30_V2.pdf" attr="" comment="CDF 3.0 fb dilepton higgs WW analysis" date="1225297611" name="cdf9402_HWW_30_V2.pdf" path="cdf9402_HWW_30_V2.pdf" size="5313708" stream="cdf9402_HWW_30_V2.pdf" tmpFilename="/usr/tmp/CGItemp37125" user="RichardStDenis" version="1"

Revision 22008-10-29 - KennyWraight

Line: 1 to 1
 
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08


Some information on the top meeting...
Added:
>
>
Table of Sherpa numbers for fully leptonic ttbar cross-section:

CoM energy
<-- -->
Sorted ascending
ttbar (ratio to 14TeV) ttbar + 1jet (ratio to 14TeV)
1.96TeV    
10TeV 64.29 ± 0.16% (0.47) 92.09 ± 0.94% (0.39)
12TeV 98.18 ± 0.15% (0.74) 154.23 ± 0.99% (0.66)
14TeV 138.22 ± 0.16% 233.81 ± 1.0%
 

-- KennyWraight - 29 Oct 2008

Changed:
<
<
META FILEATTACHMENT attachment="AOD_analysis.ppt" attr="" comment="Kenny's slides in powerpoint format" date="1225278179" name="AOD_analysis.ppt" path="AOD_analysis.ppt" size="1296896" stream="AOD_analysis.ppt" tmpFilename="/usr/tmp/CGItemp12177" user="KennyWraight" version="1"
>
>
META FILEATTACHMENT attachment="AOD_analysis.ppt" attr="" comment="Kenny's talk in powerpoint format (should work on Linux)" date="1225296878" name="AOD_analysis.ppt" path="C:\Documents and Settings\Kené\Desktop\Talks\AOD_analysis.ppt" size="1219584" stream="C:\Documents and Settings\Kené\Desktop\Talks\AOD_analysis.ppt" tmpFilename="/usr/tmp/CGItemp28602" user="KennyWraight" version="1"

Revision 12008-10-29 - KennyWraight

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="InternalPages"

AtlasMeeting_29_10_08


Some information on the top meeting...

-- KennyWraight - 29 Oct 2008

META FILEATTACHMENT attachment="AOD_analysis.ppt" attr="" comment="Kenny's slides in powerpoint format" date="1225278179" name="AOD_analysis.ppt" path="AOD_analysis.ppt" size="1296896" stream="AOD_analysis.ppt" tmpFilename="/usr/tmp/CGItemp12177" user="KennyWraight" version="1"
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2020 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback