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Search for doubly charged Higgs bosons in e- μ channel at CMS. Feb. 23, 2013 Jongseok Lee (Sungkyunkwan University). Contents. 7TeV Samples Lepton cut variables Data driven background estimation Comparison with Mario Systematic uncertainties Effect of tau 8TeV analysis - PowerPoint PPT Presentation
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Search for doubly charged Higgs bosons in e-μ channel
at CMS
1
Feb. 23, 2013 Jongseok Lee(Sungkyunkwan University)
Contents• 7TeV Samples
• Lepton cut variables
• Data driven background estimation
• Comparison with Mario
• Systematic uncertainties
• Effect of tau
• 8TeV analysis
• Summary and Plan 2
Samples• Used CMSSW version : 4_4_2
• MC signal samples (√s=7TeV) : full simulation data → H++H-- to l+l+l-l-
→ M(H±±) = 150, 170, 200, 250, 300, 400, 500GeV • MC background samples : full simulation data → ZZJetsTo4L, WZJetsTo3LNu TTTo2L2Nu2B, DYJetsToLL
• Data samples : 2011 data, Lint(μμ)= 4.75 fb-1 , Lint(ee)= 4.98 fb-1 ,
Lint (eμ)= 4.98 fb-1
3
calculated by Michael Spira
Mμμ
4
nm>=2, pt>10, |η|<2.4, global, good, mu_hits_val>20, mu_nstation>0, relIso<0.2, 60<Mμμ<120
lumi : 4.983 fb-1
cross section of DY: 3048 fb
lumi : 4.753 fb-1
cross section of DY : 3048 fb
lumi : 4.753 fb-1
cross section of DYfor 60<Mll<120 : 2916 fb
Standard model cross sections for CMS at 7TeV : https://twiki.cern.ch/twiki/bin/viewauth/CMS/StandardModelCrossSections
Muon cut variables
5
nm>=2, pt>10, |η|<2.4, global, good, nhits_val>20, nsation>=1, relIso<0.2, 60<Mμμ<120
7TeV, 4.753 fb-1
7TeV, 4.753 fb-1
7TeV, 4.753 fb-1
7TeV, 4.753 fb-1
7TeV, 4.753 fb-1
7TeV, 4.753 fb-1
Mee
6
ne>=2, pt>10, |η|<2.5, charge consistent, eidLoose, relIso<0.2, 60<Mμμ<120
lumi : 4.983 fb-1
cross section of DY: 3048 fb
lumi : 4.983 fb-1
cross section of DYfor 60<Mll<120 : 2916 fb
Standard model cross sections for CMS at 7TeV : https://twiki.cern.ch/twiki/bin/viewauth/CMS/StandardModelCrossSections
Electron cut variables
7
ne>=2, pt>10, |η|<2.5, eidLoose, relIso<0.2
7TeV, 4.983 fb-1
7TeV, 4.983 fb-1 7TeV, 4.983
fb-1
7TeV, 4.983 fb-1 7TeV, 4.983
fb-1
7TeV, 4.983 fb-1
Sideband method
8
yuncertaint lstatistica N assumed isit then y,uncertaint lstatistica N If
sidebands. in the events data of # total theis N
data, from estimatedregion signal in the events background of # theis N where
,1 N
1 oferror relative a and
,1 N N
yuncertaint lstatistica N assumed isit then y,uncertaint lstatistica N if
, N assumed isit then 0, N if
MC. by the prediced as regions sideband and signal in the events theare N and N where
,N
N
region. signal in theon contributi background theestimate toused is method sidebandA
BGSRBGSR
DataSB
BGSR
DataSB
DataSBBGSR
SRSR
SRSB
SBSR
SB
SR
# of events at 7TeV & 4.753fb-1
9
mmmmMass of H++
(GeV)In signal region
(MC background)In signal region
by sideband method
In signal region(Data)
150 0.879±0.019
1.50±0.18±0.27
0
170 0.855±0.017
1.46±0.18±0.26
0
200 0.486±0.013
0.815±0.098±0.144
0
250 0.296±0.010
0.491±0.059±0.087
0
300 0.118±0.006
0.194±0.024±0.034
0
350 0.109±0.006
0.179±0.023±0.032
0
400 0.072±0.005
0.118±0.016±0.021
0
500 0.025±0.003
0.040±0.007±0.007
0
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10, in signal region (5σ)
± statistical error ± α error ± relative error
# of events at 7TeV & 4.983fb-1
10
eeeeMass of H++
(GeV)In signal region
(MC background)In signal region
by sideband method
In signal region(Data)
150 0.451±0.013
0.889±0.052 ±0.216
0
170 0.381±0.012
0.745±0.044 ±0.181
0
200 0.309±0.011
0.600±0.036 ±0.145
0
250 0.072±0.006
0.136±0.013 ±0.033
0
300 0.049±0.004
0.092±0.009 ±0.022
0
350 0.017±0.002
0.031±0.005 ±0.008
0
400 0.017±0.002
0.031±0.005 ± 0.008
0
500 0.0014±0.0007
0.0025±0.0013 ±0.0006
0
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10, in signal region (5σ)
± statistical error ± α error ± relative error
# of events at 7TeV & 4.983fb-1
11
ememMass of H++
(GeV)In signal region
(MC background)In signal region
by sideband method
In signal region(Data)
150 1.40±0.02
2.39±0.10 ±0.36
4.0±2.0
170 1.20±0.02
2.09±0.09 ±0.31
3.0±1.7
200 0.642±0.015
1.14±0.05 ±0.168
1.0±1.0
250 0.334±0.011
0.599±0.030 ±0.087
0
300 0.203±0.009
0.363±0.021 ±0.053
0
350 0.114±0.006
0.203±0.013 ±0.030
0
400 0.068±0.005
0.120±0.010 ±0.017
0
500 0.012±0.002
0.022±0.004 ±0.003
0
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10, in signal region (5σ)
± statistical error ± α error ± relative error
ABCD method
12
signal
backgound
A
C
B
D
A B C D : regionsnA nB nC nD : event counts
relIso<0.2 relIso>0.2
M4l>200
M4l<200
Background is independent for relIso & m4 :
The estimated number of background events in A :
This can be done completely without MC information-> Data driven background estimation
D
B
C
A
n
n
n
n
D
CBestA n
nnn
# of events at 7TeV & 4.983fb-1
13
mmmmregion B region C region D region A A-estimated
data 19.0±4.4
17.0±4.1
142.0±11.9
9.0±3.0
2.3±0.8
MC 13.9±1.3
2.56±0.04
49.0±3.6
11.8±0.1
singnal(150GeV)
33.0±1.2
0 0.048±0.048
241±2
nlep+>=2, nlep->=2, m(H±±)>10
± statistical error
# of events at 7TeV & 4.983fb-1
14
eeeeregion B region C region D region A A-estimated
data 5.0±2.2
7.0±2.6
5.0±2.2
5.0±2.2
7.0±5.2
MC 3.8±0.9
1.6±0.4
8.8±3.3
5.81±0.05
singnal(150GeV)
21.3±1.0
0 0 133±2
nlep+>=2, nlep->=2, m(H±±)>10
± statistical error
# of events at 7TeV & 4.983fb-1
15
ememregion B region C region D region A A-estimated
data 16.0±4.0
14.0±3.7
86.0±9.3
21.0±4.6
2.6±1.0
MC 19.3±1.5
3.8±0.4
57.3±4.7
16.7±0.1
singnal(150GeV)
26.6±1.1
0 0 180±2
nlep+>=2, nlep->=2, m(H±±)>10
± statistical error
Comparison with Mario for 4μ channel
at 7TeV & 4.753fb-1
16
4μ & event selection(case 1)
17
• Muon selectionpT>10 GeV, |η|<2.4, global muon, good muon, hits_val>20, nstation>=1
• Preselection : nlep+>=2, nlep->=2, Mll>10 GeV
• Event selection - mass dependent cut- quad-lepton mass : M4l > cut value
- relative isolation : (IsoPttrack + IsoPtcalorimeter)/pt < cut value
- minimum one event for backgrounds
4μ & event selection(case 2)
18
• Muon selectionpT>10 GeV, |η|<2.4, global muon, good muon, hits_val>20, nstation>=1
• Preselection : nlep+>=2, nlep->=2,
pT,1st>20 GeV, pT,2nd>10 GeV,
Mll>12 GeV,
relIsoworst + relIsonext to worst < 0.35
• Event selection - mass dependent cut- sumpt : ∑pT > 0.6mΦ + 130GeV
- mass window : [0.9mΦ ; 1.1mΦ]
- minimum one event for backgrounds
19
# of expected eventsM(H++) H++H– to
μμμμBkg.(MC) ScL Data
150GeV 247±2
4.45±0.16
39.2 2.0±1.4
170GeV 151±1
3.19±0.16
29.9 2.0±1.4
200GeV 76.6±0.7
1.78±0.15
21.0 2±1.4
250GeV 30.4±0.3
1.02±0.15
12.4 0
300GeV 12.8±0.2
0.688±0.153
7.39 0
350GeV 6.01±0.07
0.557±0.153
4.52 0
400GeV 3.02±0.03
0.488±0.153
2.80 0
500GeV 0.849±0.013
0.415±0.153
1.06 0
preselection, sumpt, mass window (case 2)
# of expected eventspreselection, M4l, relIso (case 1)
# of expected eventsM(H++) H++H– to
μμμμBkg.(MC) ScL Data
150GeV 220±2
0.494±0.166
47.5 0
170GeV 132±2
0.477±0.166
35.0 0
200GeV 69.0±0.7
0.457±0.166
23.7 0
250GeV 28.0±0.3
0.425±0.166
13.5 0
300GeV 11.1±0.2
0.419±0.166
7.38 0
350GeV 5.15±0.08
0.416±0.166
4.31 0
400GeV 3.03±0.04
0.413±0.166
2.92 0
500GeV 0.700±0.014
0.411±0.166
0.90 0
Exclusion limit for 4μ at 7TeV
20
Expected Limit : 385 GeVObserved Limit : 399 GeV
preselection, sumpt, mass window (case 2)preselection, M4l, relIso (case 1)
Expected Limit : 375 GeVObserved Limit : 399 GeV
4μ & event selectionby Mario (case 3)
21
• Muon selectionpT>5 GeV, |η|<2.4, global muon, tight muon id
• Preselection : pT,1st>20 GeV, pT,2nd>10 GeV,
Mll>12 GeV,
relIsoworst + relIsonext to worst < 0.35,
sip<4
• Event selection - mass dependent cut- sumpt : ∑pT > 0.6mΦ + 130GeV
- mass window : [0.9mΦ ; 1.1mΦ]
- minimum one event for backgrounds
22
# of expected eventsM(H++) H++H– to
μμμμBkg.(MC) ScL Data
150GeV 247±2
4.45±0.16
39.2 2.0±1.4
170GeV 151±1
3.19±0.16
29.9 2.0±1.4
200GeV 76.6±0.7
1.78±0.15
21.0 2±1.4
250GeV 30.4±0.3
1.02±0.15
12.4 0
300GeV 12.8±0.2
0.688±0.153
7.39 0
350GeV 6.01±0.07
0.557±0.153
4.52 0
400GeV 3.02±0.03
0.488±0.153
2.80 0
500GeV 0.849±0.013
0.415±0.153
1.06 0
Mario’s result at 7TeV & 4.93fb-1 (case 3)
# of expected eventspreselection, M4l, relIso (case 1)
# of expected eventsM(H++) H++H– to
μμμμBkg.(MC) ScL Data
150GeV 215±2
0.53±0.43
46.5 0
170GeV 131±2
0.51±0.43
34.5 0
200GeV 66.9±0.7
0.48±0.43
23.1 0
250GeV 26.0±0.3
0.46±0.43
12.7 0
300GeV 10.7±0.2
0.46±0.43
7.06 0
350GeV 4.87±0.08
0.46±0.43
4.05 0
400GeV 2.41±0.04
0.46±0.43
2.39 0
500GeV 0.65±0.02
0.46±0.43
0.91 0
Exclusion limit for 4μ at 7TeV
23
Mario’s result at 7TeV & 4.93fb-1 (case 3)
Result for pair production only : 395GeV
Expected Limit : 385 GeVObserved Limit : 399 GeV
preselection, M4l, relIso (case 1)
24
# of expected eventsM(H++) H++H– to
μμμμBkg.(MC) ScL Data
150GeV 220±2
0.494±0.166
47.5 0
170GeV 132±2
0.477±0.166
35.0 0
200GeV 69.0±0.7
0.457±0.166
23.7 0
250GeV 28.0±0.3
0.425±0.166
13.5 0
300GeV 11.1±0.2
0.419±0.166
7.38 0
350GeV 5.15±0.08
0.416±0.166
4.31 0
400GeV 3.03±0.04
0.413±0.166
2.92 0
500GeV 0.700±0.014
0.411±0.166
0.90 0
preselection, sumpt, mass window (case 2)
# of expected events
# of expected eventsM(H++) H++H– to
μμμμBkg.(MC) ScL Data
150GeV 215±2
0.53±0.43
46.5 0
170GeV 131±2
0.51±0.43
34.5 0
200GeV 66.9±0.7
0.48±0.43
23.1 0
250GeV 26.0±0.3
0.46±0.43
12.7 0
300GeV 10.7±0.2
0.46±0.43
7.06 0
350GeV 4.87±0.08
0.46±0.43
4.05 0
400GeV 2.41±0.04
0.46±0.43
2.39 0
500GeV 0.65±0.02
0.46±0.43
0.91 0
Mario’s result at 7TeV & 4.93fb-1 (case 3)
Exclusion limit for 4μ at 7TeV
25
Mario’s result at 7TeV & 4.63fb-1 (case 3)
Result for pair production only : 395GeV
preselection, sumpt, mass window (case 2)
Expected Limit : 375 GeVObserved Limit : 399 GeV
Comparison with Mario for 4e channel
at 7TeV & 4.983fb-1
26
4e & event selection (case 1)
27
• Electron selectionpT>10 GeV, |η|<2.5, |dxy|<0.02, eidLoose
• Preselection : nlep+>=2, nlep->=2, Mll>10 GeV
• Event selection - mass dependent cut- quad-lepton mass : M4l > cut value
- relative isolation : (IsoPttrack + IsoPtcalorimeter)/pt < cut value
- minimum one event for backgrounds
4e & event selection(case 2)
28
• Electron selection pT>10 GeV, |η|<2.5, |dxy|<0.02, eidLoose
• Preselection : nlep+>=2, nlep->=2,
pT,1st>20 GeV, pT,2nd>10 GeV,
Mll>12 GeV,
relIsoworst + relIsonext to worst < 0.35
• Event selection - mass dependent cut- sumpt : ∑pT > 0.6mΦ + 130GeV
- mass window : [0.9mΦ ; 1.1mΦ]
- minimum one event for backgrounds
29
# of expected eventsM(H++) H++H– to
eeeeBkg.(MC) ScL Data
150GeV 150±2
2.67±0.18
30.6 0
170GeV 94.0±1.6
1.95±0.18
23.7 0
200GeV 48.3±0.8
1.32±0.18
16.2 0
250GeV 19.7±0.3
0.808±0.174
9.67 0
300GeV 7.88±0.17
0.607±0.174
5.39 0
350GeV 3.57±0.08
0.516±0.174
3.13 0
400GeV 1.74±0.04
0.481±0.174
1.82 0
500GeV 0.476±0.015
0.448±0.174
0.621 0
preselection, sumpt, mass window at 7TeV & 4.983fb-1
(case 2)
# of expected eventspreselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1)
# of expected eventsM(H++) H++H– to
eeeeBkg.(MC) ScL Data
150GeV 132±2
0.474±0.174
35.0 0
170GeV 83.5±1.5
0.461±0.174
26.6 0
200GeV 42.5±0.8
0.455±0.174
17.5 0
250GeV 17.6±0.3
0.445±0.174
9.91 0
300GeV 7.10±0.17
0.435±0.174
5.36 0
350GeV 3.25±0.08
0.433±0.174
3.05 0
400GeV 1.89±0.05
0.431±0.174
2.01 0
500GeV 0.433±0.015
0.431±0.174
0.579 0
Exclusion limit
30
Expected Limit : 346 GeVObserved Limit : 364 GeV
preselection, sumpt, mass window at 7TeV & 4.983fb-1 (case 2)
preselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1)
Expected Limit : 341 GeVObserved Limit : 356 GeV
4e & event selectionby Mario (case 3)
31
• Electron selectionpT>15 GeV, |η|<2.5, CiCid, ipT <2mm
• Preselection : pT,1st>20 GeV, pT,2nd>10 GeV,
Mll>12 GeV,
relIsoworst + relIsonext to worst < 0.35,
sip<4
• Event selection - mass dependent cut- sumpt : ∑pT > 0.6mΦ + 130GeV
- mass window : [0.9mΦ ; 1.1mΦ]
- minimum one event for backgrounds
32
# of expected eventsM(H++) H++H– to
eeeeBkg.(MC) ScL Data
150GeV 150±2
2.67±0.18
30.6 2
170GeV 94.0±1.6
1.95±0.18
23.7 0
200GeV 48.3±0.8
1.32±0.18
16.2 0
250GeV 19.7±0.3
0.808±0.174
9.67 0
300GeV 7.88±0.17
0.607±0.174
5.39 0
350GeV 3.57±0.08
0.516±0.174
3.13 0
400GeV 1.74±0.04
0.481±0.174
1.82 0
500GeV 0.476±0.015
0.448±0.174
0.621 0
# of expected events
# of expected eventsM(H++) H++H– to
eeeeBkg.(MC) ScL Data
150GeV 144±2
0.50±0.43
36.7 0
170GeV 92.5±1.47
0.48±0.43
28.2 0
200GeV 47.8±0.7
0.47±0.43
18.7 0
250GeV 19.2±0.3
0.46±0.43
10.5 0
300GeV 8.10±0.17
0.46±0.43
5.82 0
350GeV 3.72±0.08
0.46±0.43
3.32 0
400GeV 1.79±0.04
0.46±0.43
1.89 0
500GeV 0.480±0.015
0.46±0.43
0.62 0
preselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1) Mario’s result at 7TeV & 4.93fb-1 (case 3)
Exclusion limit for 4e at 7TeV
33
Result for pair production only : 384GeV
Expected Limit : 346 GeVObserved Limit : 364 GeV
preselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1) Mario’s result at 7TeV & 4.93fb-1 (case 3)
34
# of expected eventsM(H++) H++H– to
eeeeBkg.(MC) ScL Data
150GeV 132±2
0.474±0.174
35.0 0
170GeV 83.5±1.5
0.461±0.174
26.6 0
200GeV 42.5±0.8
±0.4550.174
17.5 0
250GeV 17.6±0.3
0.445±0.174
9.91 0
300GeV 7.10±0.17
0.435±0.174
5.36 0
350GeV 3.25±0.08
0.433±0.174
3.05 0
400GeV 1.89±0.05
0.431±0.174
2.01 0
500GeV 0.433±0.015
0.431±0.174
0.579 0
# of expected events
# of expected eventsM(H++) H++H– to
eeeeBkg.(MC) ScL Data
150GeV 144±2
0.50±0.43
36.7 0
170GeV 92.5±1.47
0.48±0.43
28.2 0
200GeV 47.8±0.7
0.47±0.43
18.7 0
250GeV 19.2±0.3
0.46±0.43
10.5 0
300GeV 8.10±0.17
0.46±0.43
5.82 0
350GeV 3.72±0.08
0.46±0.43
3.32 0
400GeV 1.79±0.04
0.46±0.43
1.89 0
500GeV 0.480±0.015
0.46±0.43
0.62 0
Mario’s result at 7TeV & 4.93fb-1 (case 3)preselection, sumpt, mass window at 7TeV & 4.983fb-1
(case 2)
Exclusion limit for 4e at 7TeV
35
Expected Limit : 341 GeVObserved Limit : 356 GeV
Result for pair production only : 384GeV
Mario’s result at 7TeV & 4.93fb-1 (case 3)
preselection, sumpt, mass window at 7TeV & 4.983fb-1 (case 2)
Comparison with Mario for eμeμ channel
at 7TeV & 4.983fb-1
36
37
# of expected eventsM(H++) H++H– to
eμeμBkg.(MC) ScL Data
150GeV 186±2
5.40±0.18
31.6 4.0±2.0
170GeV 116±2
4.02±0.18
24.1 5±2.2
200GeV 61.7±0.8
2.60±0.18
17.0 0
250GeV 25.4±0.4
1.37±0.18
10.4 0
300GeV 10.3±0.2
0.889±0.174
6.02 0
350GeV 4.77±0.08
0.657±0.174
3.66 0
400GeV 2.85±0.05
0.575±0.174
2.55 0
500GeV 0.703±0.015
0.470±0.174
0.861 0
# of expected events
# of expected eventsM(H++) H++H– to
eμeμBkg.(MC) ScL Data
150GeV 173±2
0.550±0.174
40.6 0
170GeV 106±2
0.529±0.174
30.3 0
200GeV 56.4±0.8
0.486±0.174
20.7 0
250GeV 22.7±0.4
0.454±0.174
11.7 0
300GeV 9.34±0.18
0.442±0.174
6.48 0
350GeV 4.31±0.08
0.437±0.174
3.74 0
400GeV 2.47±0.05
0.434±0.174
2.47 0
500GeV 0.605±0.015
0.431±0.174
0.779 0
preselection, sumpt, mass window at 7TeV & 4.983fb-1
(case 2)preselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1)
Exclusion limit
38
preselection, sumpt, mass window at 7TeV & 4.983fb-1 (case 2)
preselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1)
Expected Limit : 363 GeVObserved Limit : 381 GeV
Expected Limit : 370 GeVObserved Limit : 393 GeV
39
# of expected eventsM(H++) H++H– to
eμeμBkg.(MC) ScL Data
150GeV 186±2
5.40±0.18
31.6 4.0±2.0
170GeV 116±2
4.02±0.18
24.1 5±2.2
200GeV 61.7±0.8
2.60±0.18
17.0 0
250GeV 25.4±0.4
1.37±0.18
10.4 0
300GeV 10.3±0.2
0.889±0.174
6.02 0
350GeV 4.77±0.08
0.657±0.174
3.66 0
400GeV 2.85±0.05
0.575±0.174
2.55 0
500GeV 0.703±0.015
0.470±0.174
0.861 0
# of expected events
# of expected eventsM(H++) H++H– to
eμeμBkg.(MC) ScL Data
150GeV 176±2
0.57±0.43
40.9 0
170GeV 109±2
0.55±0.43
30.7 0
200GeV 56.9±0.8
0.50±0.43
20.8 0
250GeV 21.7±0.3
0.47±0.43
11.3 0
300GeV 9.32±0.18
0.46±0.43
6.42 0
350GeV 4.29±0.08
0.46±0.43
3.69 0
400GeV 2.01±0.04
0.46±0.43
2.07 0
500GeV 0.580±0.015
0.46±0.43
0.733 0
preselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1) Mario’s result at 7TeV & 4.93fb-1 (case 3)
Exclusion limit
40
Result for pair production only : 391GeV
Expected Limit : 370 GeVObserved Limit : 393 GeV
preselection, M4l, relIso at 7TeV & 4.983fb-1 (case 1) Mario’s result at 7TeV & 4.93fb-1 (case 3)
41
# of expected eventsM(H++) H++H– to
eμeμBkg.(MC) ScL Data
150GeV 173±2
0.550±0.174
40.6 0
170GeV 106±2
0.529±0.174
30.3 0
200GeV 56.4±0.8
0.486±0.174
20.7 0
250GeV 22.7±0.4
0.454±0.174
11.7 0
300GeV 9.34±0.18
0.442±0.174
6.48 0
350GeV 4.31±0.08
0.437±0.174
3.74 0
400GeV 2.47±0.05
0.434±0.174
2.47 0
500GeV 0.605±0.015
0.431±0.174
0.779 0
# of expected events
# of expected eventsM(H++) H++H– to
eμeμBkg.(MC) ScL Data
150GeV 176±2
0.57±0.43
40.9 0
170GeV 109±2
0.55±0.43
30.7 0
200GeV 56.9±0.8
0.50±0.43
20.8 0
250GeV 21.7±0.3
0.47±0.43
11.3 0
300GeV 9.32±0.18
0.46±0.43
6.42 0
350GeV 4.29±0.08
0.46±0.43
3.69 0
400GeV 2.01±0.04
0.46±0.43
2.07 0
500GeV 0.580±0.015
0.46±0.43
0.733 0
Mario’s result at 7TeV & 4.93fb-1 (case 3)preselection, sumpt, mass window at 7TeV & 4.983fb-1
(case 2)
Exclusion limit
42
Result for pair production only : 391GeV
Expected Limit : 363 GeVObserved Limit : 381 GeV
Mario’s result at 7TeV & 4.93fb-1 (case 3)
preselection, sumpt, mass window at 7TeV & 4.983fb-1 (case 2)
Systematic uncertainties
• Trigger and primary vertex finding : 1.5%
• Signal cross section : 10~15%
• Luminosity (for signal only) : 4.5%
43
Effect of tau
44
45
# of events VS channel(m200)
Gen2 channels are separated by gen leptons matched 4 final reco leptons.
No cut
nlep+>=2, nlep-
>=2
nlep+>=2, nlep-
>=2nlep+>=2, nlep->=2,|mp-mn|/(mp+mn)<0.1
46
# of events VS channel(ZZJetsTo4L)
nlep+>=2, nlep-
>=2
nlep+>=2, nlep-
>=2
nlep+>=2, nlep->=2,|mp-mn|/(mp+mn)<0.1
Gen2 channels are separated by gen leptons matched 4 final reco leptons.
47
# of events VS channel(TTTo2L2Nu2B)
Gen2 channels are separated by gen leptons matched 4 final reco leptons.
nlep+>=2, nlep-
>=2
nlep+>=2, nlep-
>=2
nlep+>=2, nlep->=2,|mp-mn|/(mp+mn)<0.1
48
Cut variables(ZZJetsTo4L)
nlep+>=2, nlep-
>=2
recoch(eeee) &&gen2ch(eeee)
recoch(eeee) &&gen2ch(etet)
recoch(eeee) &&gen2ch(eeee)
recoch(eeee) &&gen2ch(etet)
49
Cut variables(m200)
nlep+>=2, nlep-
>=2
recoch(eeee) &&gen2ch(eeee)
recoch(eeee) &&gen2ch(eeee)
recoch(eeee) &&(gen2ch(eeet)||gen2ch(eett)||gen2ch(etet)||gen2ch(ettt)||gen2ch(tttt))
recoch(eeee) &&(gen2ch(eeet)||gen2ch(eett)||gen2ch(etet)||gen2ch(ettt)||gen2ch(tttt))
effciencygen2ch recoch
M(H++)presel presel &&
|mp-mn|/(mp+mn)<0.1
presel&&
m4>300
presel && |mp-mn|/
(mp+mn)<0.1&& m4>300
etet
eeee
150GeV 0.727%
0.279% 0.388% 0.170%
300GeV 1.09% 0.239% 1.02% 0.205%
500GeV 1.63% 0.260% 1.63% 0.260%
ZZJetsTo4L
0.085%
0.0155% 0.0067%
0.00084%
eeem
150GeV 1.61% 0.569% 0.788% 0.303%
300GeV 2.42% 0.820% 2.36% 0.820%
500GeV 1.82% 0.390% 1.82% 0.390%
ZZJetsTo4L
0.204%
0.0376% 0.0166%
0.00304%
emem
150GeV 0.933%
0.424% 0.594% 0.303%
300GeV 1.16% 0.307% 1.13% 0.307%
500GeV 2.54% 0.975% 2.54% 0.975%
ZZJetsTo4L
0.113%
0.0212% 0.0079%
0.00076% 50
Cut efficiency
effciencygen2ch recoch
M(H++)presel presel &&
|mp-mn|/(mp+mn)<0.1
presel&&
m4>300
presel && |mp-mn|/
(mp+mn)<0.1&& m4>300
mtmt
mmmm
150GeV 1.11% 0.341% 0.584% 0.195%
300GeV 1.53% 0.477% 1.40% 0.443%
500GeV 2.34% 0.895% 2.34% 0.895%
ZZJetsTo4L
0.134%
0.0244% 0.0116%
0.00143%
emmm
150GeV 2.24% 1.06% 1.17% 0.669%
300GeV 3.37% 1.19% 3.17% 1.19%
500GeV 4.06% 1.10% 4.06% 1.10%
ZZJetsTo4L
0.246%
0.0490% 0.0201%
0.00270%
emem
150GeV 1.08% 0.389% 0.547% 0.182%
300GeV 0.988%
0.409% 0.954% 0.409%
500GeV 1.10% 0.344% 1.10% 0.344%
ZZJetsTo4L
0.113%
0.0199% 0.0109%
0.00135%51
Cut efficiency
Analysis at 8TeV & 5.098 fb-
1
52
Used samples/TTTo2L2Nu2B_8TeV-powheg-pythia6/jslee-v1-Summer12_TTTo2L2Nu2B-f16eeefb6ffa56020dc09a3f8c0db443/USER/ZZJetsTo4L_TuneZ2star_8TeV-madgraph-tauola/jslee-v1-Summer12_ZZJetsTo4L-f16eeefb6ffa56020dc09a3f8c0db443/USER/ZZJetsTo2L2Q_TuneZ2star_8TeV-madgraph-tauola/jslee-v1-Summer12_ZZJetsTo2L2Q-f16eeefb6ffa56020dc09a3f8c0db443/
USER/WZJetsTo3LNu_TuneZ2_8TeV-madgraph-tauola/jslee-v1-Summer12_WZJetsTo3LNu-f16eeefb6ffa56020dc09a3f8c0db443/
USER/WWJetsTo2L2Nu_TuneZ2star_8TeV-madgraph-tauola/jslee-v1-Summer12_WWJetsTo2L2Nu-
f16eeefb6ffa56020dc09a3f8c0db443/USER/DYJetsToLL_M-50_TuneZ2Star_8TeV-madgraph-tarball/jslee-v1-Summer12_DYJetsToLL_M-50-
f16eeefb6ffa56020dc09a3f8c0db443/USER/DYJetsToLL_M-10To50filter_8TeV-madgraph/jslee-v1-Summer12_DYJetsToLL_M-10To50-
f16eeefb6ffa56020dc09a3f8c0db443/USER/T_tW-channel-DR_TuneZ2star_8TeV-powheg-tauola/jslee-v1-Summer12_T_tW-channel-
f16eeefb6ffa56020dc09a3f8c0db443/USER/T_s-channel_TuneZ2star_8TeV-powheg-tauola/jslee-v1-Summer12_T_s-channel-f16eeefb6ffa56020dc09a3f8c0db443/USER/Tbar_tW-channel-DR_TuneZ2star_8TeV-powheg-tauola/jslee-v1-Summer12_Tbar_tW-channel-
f16eeefb6ffa56020dc09a3f8c0db443/USER/Tbar_t-channel_TuneZ2star_8TeV-powheg-tauola/jslee-v1-Summer12_Tbar_t-channel-f16eeefb6ffa56020dc09a3f8c0db443/
USER
/DoubleMu/jslee-v1-Summer12_DoubleMu_Run2012A_PromptReco_v1-0c6dd9aa6d8f92e3c92cf94d77ab8809/USER/DoubleMu/jslee-v1-Summer12_DoubleMu_Run2012B_PromptReco_v1-0c6dd9aa6d8f92e3c92cf94d77ab8809/USER/DoubleElectron/jslee-v1-Summer12_DoubleElectron_Run2012A_PromptReco_v1-cbcf422786c4af5101f9b073742156b8/USER/DoubleElectron/jslee-v1-Summer12_DoubleElectron_Run2012B_PromptReco_v1-cbcf422786c4af5101f9b073742156b8/USER
Cross sections : https://twiki.cern.ch/twiki/bin/viewauth/CMS/HZZSamples8TeV
53
HLT efficiencies(Nhlt/Ngen)
54
• Used paths (8TeV):HLT_Mu17_Mu8HLT_Ele17_Ele8HLT_Mu8_Ele17HLT_Mu17_Ele8
• Used paths (7TeV):HLT_DoubleMu7HLT_Mu13_Mu8HLT_Mu17_Mu8HLT_Ele17_Ele8HLT_Mu8_Ele17HLT_Mu17_Ele8
Skim efficiencies(Nskim/Nhlt)
55
• Skim conditions :firstpt>15 GeV && secondpt>10 GeVfor e, μ
Primary vertex
56
# of vertices8TeV, 5.098 fb-1
normalized chi2
8TeV, 5.098 fb-1
nlep>=2, relIso<0.2
# of vertices7TeV, 4.983 fb-1
normalized chi2
7TeV, 4.983 fb-1
# of events at 8TeV & 5.098fb-1
57
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10
Channel background(MC)
Data
mmmm 19.4±2.8
58.0±7.6
eeee 68.8±6.4
85.0±9.2
emem 105.3±7.7
145.0±12.0
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10, M4l>100
Channel background(MC)
Data
mmmm 16.5±2.6
25.0±5.0
eeee 60.2±6.0
61.0±7.8
emem 85.0±6.9
77.0±8.8
# of events at 8TeV & 5.098fb-1
58
mmmmMass of H++
(GeV)In signal region
(MC background)In signal region
by sideband method
In signal region(Data)
150 3.87±0.03
15.0±0.7
9.0±3
nlep+>=2, nlep->=2, m(H±±)>10, in signal region (relIso<0.2 && M4l >200)
± statistical error ± relative error
mmmmMass of H++
(GeV)In signal region
(MC background)In signal region
by sideband method
In signal region(Data)
150 5.76±1.60
22.4±1.0
12.0±3.5
nlep+>=2, nlep->=2, m(H±±)>10, in signal region (relIso<0.2 && |mp-mn|/(mp+mn)<0.2)
mmmmMass of H++
(GeV)In signal region
(MC background)In signal region
by sideband method
In signal region(Data)
150 4.69±1.60
18.4±0.8
5.0±2.2
nlep+>=2, nlep->=2, m(H±±)>10, in signal region (relIso<0.2 && |mp-mn|/(mp+mn)<0.1)
Mμμ
59
nm>=2, pt>10, |η|<2.4, global, good, mu_hits_val>20, mu_nstation>0, relIso<0.2, 60<Mμμ<120
lumi : 5.098 fb-1
cross section of DY: 3533 fb
lumi : 3.496 fb-1
cross section of DY : 3533 fb
lumi : 3.496 fb-1
cross section of DYfor 60<Mll<120 : 3352 fb
Standard model cross sections for CMS at 8TeV : https://twiki.cern.ch/twiki/bin/viewauth/CMS/StandardModelCrossSectionsat8TeV
Muon cut variables
60
nm>=2, pt>10, |η|<2.4, global, good, nhits_val>20, nchi2<10, nsation>=1, relIso<0.2, 60<Mμμ<120
Mee
61
ne>=2, pt>10, |η|<2.5, charge consistent, eidLoose, relIso<0.2, 60<Mμμ<120
lumi : 5.098 fb-1
cross section of DY: 3533 fb
lumi : 1.712 fb-1
cross section of DY : 3533 fb
lumi : 1.712 fb-1
cross section of DYfor 60<Mll<120 : 3352 fb
Standard model cross sections for CMS at 8TeV : https://twiki.cern.ch/twiki/bin/viewauth/CMS/StandardModelCrossSectionsat8TeV
Electron cut variables
62
ne>=2, pt>10, |η|<2.5, charge consistent, eidLoose, relIso<0.2, 60<Mμμ<120
Summary
• No signal excess is observed.
• 95% Confidence Level lower limits are set on the H++ mass of 364GeV in the eeee channel, of 393GeV in the eμeμ, of 399GeV in the μμμμ at 7TeV.
63
64
Plan per month
13.2 13.3 13.4 13.5 13.6 13.7 13.8
2012 data pat sample production
8TeV signal sampleproduction
MC VS 2012 data with Z->ll
Lepton ID study
Pileup study
Systematic Study
Paper writing
Defense
Plan
?
backup
65
• Primary vertex
• Cut variables for event selection
• Gen matching effciency for leptons
Primary vertex
66
z position8TeV, 5.098 fb-1
rho position8TeV, 5.098 fb-1
nlep>=2, relIso<0.2
z position7TeV, 4.983 fb-1
rho position7TeV, 4.983 fb-1
Cut variables for event selection(mmmm)
67
8TeV, 5.098 fb-1
8TeV, 5.098 fb-1
7TeV, 4.983 fb-1
7TeV, 4.983 fb-1
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10
68
8TeV, 5.098 fb-1
8TeV, 5.098 fb-1
7TeV, 4.983 fb-1
7TeV, 4.983 fb-1
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10
Cut variables for event selection(mmmm)
69
8TeV, 5.098 fb-1
8TeV, 5.098 fb-1
7TeV, 4.983 fb-1
7TeV, 4.983 fb-1
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10
Cut variables for event selection(eeee)
70
8TeV, 5.098 fb-1
8TeV, 5.098 fb-1
7TeV, 4.983 fb-1
7TeV, 4.983 fb-1
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10
Cut variables for event selection(eeee)
71
8TeV, 5.098 fb-1
8TeV, 5.098 fb-1
7TeV, 4.983 fb-1
7TeV, 4.983 fb-1
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10
Cut variables for event selection(emem)
72
8TeV, 5.098 fb-1
8TeV, 5.098 fb-1
7TeV, 4.983 fb-1
7TeV, 4.983 fb-1
nlep+>=2, nlep->=2, relIso<0.5, m(H±±)>10
Cut variables for event selection(emem)
Minimum one MC background event after cuts from Mario
• This comes from MC uncertainty.
• Basically it shows the upper bound on what amount of events could have survived if you had done more MC so the number comes from limiting MC.
• You cannot claim that you'd see 0 background.
• You overestimate the background strongly and your observed limit would drop far below -2 sigma.
73
74
eeee
M(H++)gench(eeee)
&& recoch(eeee)
gench(eeee)&&
recoch(eeee)&&gen2ch(eee
e)
effciency
150GeV
3832 3816 99.6%
250GeV
2317 2306 99.5%
350GeV
1495 1490 99.7%
500GeV
718 718 100%
Channel matching at 7TeV
mmmm
M(H++)gench(mmmm
)&&
recoch(mmmm)
gench(mmmm)&&
recoch(mmmm)&&gen2ch(mmm
m)
effciency
150GeV
5717 5715 99.9%
250GeV
3318 3316 99.9%
350GeV
2184 2183 99.9%
500GeV
1180 1179 99.9%emem
M(H++)gench(emem)
&& recoch(emem)
gench(emem)&&
recoch(emem)&&gen2ch(eme
m)
effciency
150GeV
4539 4520 99.6%
250GeV
2599 2593 99.8%
350GeV
1753 1751 99.9%
500GeV
957 956 99.9%
Genmatching effciency for leptons at 8TeV
75
Electron cut variables
76
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5
Electron cut variables
77
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5
Electron cut variables
78
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5
Electron cut variables
79
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5, chargeok, |d0|<0.02, eidLoose, nchi2<10, sip<4, relIso<0.2
Electron cut variables
80
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5, chargeok, |d0|<0.02, eidLoose, nchi2<10, sip<4, relIso<0.2
Electron cut variables
81
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5, chargeok, |d0|<0.02, eidLoose, nchi2<10, sip<4, relIso<0.2
Muon cut variables
82
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5, global muons
Muon cut variables
83
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.5, global muons
Muon cut variables
84
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.4, global muons
Muon cut variables
85
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.4, global muons, good muons, nchi2<10, nhits_val>20, nstation>=1, relIso<0.2
Muon cut variables
86
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.4, global muons, good muons, nchi2<10, nhits_val>20, nstation>=1, relIso<0.2
Muon cut variables
87
without gen matchingwith gen matching(ΔR<0.01, charge)
8TeV, m200 // pt>10, |η|<2.4, global muons, good muons, nchi2<10, nhits_val>20, nstation>=1, relIso<0.2