a comparison of different zbb datasetlacaprar/talks/azh_zbb... · 2014. 3. 4. · intromc vs mcdata...

A comparison of different Zbb datasetIntro MC vs MC Data vs MC Z2b Data vs MC Z1b
A comparison of different Zbb dataset
Stefano Lacaprara
INFN Padova
Stefano Lacaprara (INFN Padova) Hbb Padova 03/03/2014 1 / 64
Intro MC vs MC Data vs MC Z2b Data vs MC Z1b
Intro
Intro
We have a new Zbb dataset /Zbb 4F 8TeV madgraph/Summer12 DR53X-PU S10 START53 V19-v1/AODSIM:
I 7 551 580 events I generated with 4 Fermions (4F) pdf I with no threshold on B-partons
We have also the inclusive samples, from which we extracted the Z + bb contribution
I they have a threshold of 10 GeV on b-partons
Can we use them both?
if not, which one is better? I Compare MC vs MC to see how different they are for our studies; I Compare them with data to see which agrees better.
MC vs MC
Comparing distribution at reco level for the two MC I Zbb (black dots): new dataset; I Z+bb (dark green histo): inclusive DY+jets with events with 2
b-partons selected;
for leptonic, hadronic, and lep+had part of the events.
L pt
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
Z+bb
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
Z+bb
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
Z
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
410 Zbb
Z+bb
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 904.3/982χK-S = 0.000, 0.002±Ratio = 1.000
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
410 Zbb
Z+bb
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
Z+bb
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
D at
a/ M
Jet pt
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
Z+bb
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
Z+bb
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
Jet eta
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
410 Zbb
Z+bb
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
2 /ndf = 1246.3/982χK-S = 0.000, 0.002±Ratio = 1.000
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
410 Zbb
Z+bb
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
bb
[GeV] T
h p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
Z+bb
[GeV] T
h p 0 50 100 150 200 250 300 350 400
D at
a/ M
2 /ndf = 1114.8/982χK-S = 0.000, 0.002±Ratio = 1.000
h mass [GeV] 0 50 100 150 200 250 300 350 400
E ve
nt s/
2 G
410 Zbb
Z+bb
h mass [GeV] 0 50 100 150 200 250 300 350 400
D at
a/ M
bb
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
410 Zbb
Z+bb
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 961.9/982χK-S = 0.000, 0.002±Ratio = 1.000
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
410 Zbb
Z+bb
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
2 /ndf = 586.4/982χK-S = 0.000, 0.002±Ratio = 1.000
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
410 Zbb
Z+bb
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
A
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
410 Zbb
Z+bb
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 5158.9/982χK-S = 0.000, 0.002±Ratio = 1.000
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
410 Zbb
Z+bb
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
A
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
E ve
nt s/
6 G
410 Zbb
Z+bb
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
D at
a/ M
[GeV] T
A p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
Z+bb
[GeV] T
A p 0 50 100 150 200 250 300 350 400
D at
a/ M
Angular
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
Z+bb
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
2 /ndf = 4298.9/982χK-S = 0.000, 0.002±Ratio = 1.000
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
Z+bb
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
Data vs MC Z2b CR
Comparing distribution at reco level for each MC vs Data
Showing comparison for Zbb control region I Zbb (New dataset): left column I Z+bb (inclusive DY+jets dataset): right column
DY+jets is normalized via contro region fit (as usual);
Zbb is normalized to expected yield of DY+jets;
for leptonic, hadronic, and lep+had part of the events.
hL1pt Z2b
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
1
10
210
310
Data SM~Zh VV W+jets Single~Top tt~(+V) Z+bb Z+b Z+jets QCD
=250GeVAm =300GeVAm =350GeVAm =600GeVAm
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
1
10
210
310
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hL2pt Z2b
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
1
10
210
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
1
10
210
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hZdR Z2b
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
310 Data SM~Zh VV W+jets Single~Top tt~(+V) Z+bb Z+b Z+jets QCD
Z2b
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 46.0/982χK-S = 0.997, 0.013±Ratio = 0.998
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
Z2b
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
hZeta Z2b
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z2b
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
2 /ndf = 71.5/982χK-S = 0.587, 0.013±Ratio = 0.998
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z2b
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
hZpt Z2b
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
D at
a/ M
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
D at
a/ M
hJ1pt Z2b
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
210
310
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
210
310
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hJ2pt Z2b
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
10
210
310
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
10
210
310
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hJ2eta Z2b
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z2b
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
2 /ndf = 60.9/982χK-S = 0.240, 0.013±Ratio = 0.998
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z2b
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
hJ1eta Z2b
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z2b
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
2 /ndf = 68.6/982χK-S = 0.145, 0.013±Ratio = 0.998
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z2b
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
hhdEta Z2b
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
1
10
210
Z2b
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
2 /ndf = 85.5/982χK-S = 0.000, 0.013±Ratio = 0.998
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
1
10
210
Z2b
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
hhdR Z2b
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
Z2b
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 69.7/982χK-S = 0.003, 0.013±Ratio = 0.998
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
Z2b
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
hheta Z2b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z2b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
2 /ndf = 59.8/982χK-S = 0.540, 0.013±Ratio = 0.998
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z2b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
hhmass Z2b
h mass [GeV] 0 50 100 150 200 250 300 350 400
E ve
nt s/
2 G
eV
1
10
210
Z2b
h mass [GeV] 0 50 100 150 200 250 300 350 400
D at
a/ M
2 /ndf = 78.1/982χK-S = 0.006, 0.013±Ratio = 0.998
h mass [GeV] 0 50 100 150 200 250 300 350 400
E ve
nt s/
2 G
eV
1
10
210
Z2b
h mass [GeV] 0 50 100 150 200 250 300 350 400
D at
a/ M
hhpt Z2b
[GeV] T
h p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
[GeV] T
h p 0 50 100 150 200 250 300 350 400
D at
a/ M
[GeV] T
h p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
[GeV] T
h p 0 50 100 150 200 250 300 350 400
D at
a/ M
hAdEta Z2b
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
10
210
Z2b
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
2 /ndf = 88.9/982χK-S = 0.000, 0.013±Ratio = 0.998
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
10
210
Z2b
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
hAdR Z2b
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
310
Z2b
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 98.3/982χK-S = 0.001, 0.013±Ratio = 0.998
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
310
Z2b
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
hAeta Z2b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
10
210
Z2b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
2 /ndf = 80.7/982χK-S = 0.545, 0.013±Ratio = 0.998
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
10
210
Z2b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
hAmass Z2b
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
E ve
nt s/
6 G
eV
1
10
210
Z2b
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
D at
a/ M
2 /ndf = 91.2/982χK-S = 0.000, 0.013±Ratio = 0.998
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
E ve
nt s/
6 G
eV
1
10
210
Z2b
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
D at
a/ M
hApt Z2b
[GeV] T
A p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
A p 0 50 100 150 200 250 300 350 400
D at
a/ M
[GeV] T
A p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
A p 0 50 100 150 200 250 300 350 400
D at
a/ M
hCosTheta1 Z2b
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
Z2b
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
2 /ndf = 67.9/982χK-S = 0.998, 0.013±Ratio = 0.998
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
Z2b
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
hCosTheta2 Z2b
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
E ve
nt s
210
Z2b
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
D at
a/ M
2 /ndf = 90.3/982χK-S = 0.203, 0.013±Ratio = 0.998
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
E ve
nt s
210
Z2b
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
D at
a/ M
hCosThetaStar Z2b
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
Z2b
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
2 /ndf = 89.6/982χK-S = 0.070, 0.013±Ratio = 0.998
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
Z2b
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
hPhi1 Z2b
1 φ
E ve
nt s
210
D at
a/ M
1 φ
E ve
nt s
210
D at
a/ M
hPhi Z2b
E ve
nt s
210
D at
a/ M
φ -3 -2 -1 0 1 2 3
E ve
nt s
210
D at
a/ M
Data vs MC Z1b CR
Comparing distribution at reco level for each MC vs Data
Showing comparison for Z1b control region I Zbb (New dataset): left column I Z+bb (inclusive DY+jets dataset): right column
DY+jets is normalized via contro region fit (as usual);
Zbb is normalized to expected yield of DY+jets;
Normalization as before, but too much MC in Zbb!
I suspect double counting for MC Z1b due to different B-partons thresholds
hL1pt Z1b
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
10
210
310
Data SM~Zh VV W+jets Single~Top tt~(+V) Zbb Z+b Z+jets QCD
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
10
210
310
[GeV] T
p1L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hL2pt Z1b
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
1
10
210
310 Data SM~Zh VV W+jets Single~Top tt~(+V) Zbb Z+b Z+jets QCD
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
1
10
210
[GeV] T
p2L 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hZdR Z1b
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
310
Z1b
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 24.6/982χK-S = 0.523, 0.007±Ratio = 0.772
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
310
Z1b
ll{R}Z 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
hZeta Z1b
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z1b
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
2 /ndf = 121.7/982χK-S = 0.003, 0.007±Ratio = 0.772
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z1b
ηZ -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
hZpt Z1b
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
D at
a/ M
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
Z p 0 50 100 150 200 250 300 350 400
D at
a/ M
hJ1pt Z1b
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
210
310
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
210
310
[GeV] T
p1J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hJ2pt Z1b
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
210
310
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
E ve
nt s/
1 G
eV
210
310
[GeV] T
p2J 0 10 20 30 40 50 60 70 80 90 100
D at
a/ M
hJ2eta Z1b
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z1b
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
2 /ndf = 75.0/982χK-S = 0.423, 0.007±Ratio = 0.772
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z1b
η 2J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
hJ1eta Z1b
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z1b
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
2 /ndf = 108.0/982χK-S = 0.028, 0.007±Ratio = 0.772
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
E ve
nt s
210
Z1b
η 1J -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5
D at
a/ M
hhdEta Z1b
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
1
10
210
Z1b
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
2 /ndf = 99.5/982χK-S = 0.000, 0.007±Ratio = 0.772
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
1
10
210
Z1b
bbηh 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
hhdR Z1b
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
Z1b
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 80.2/982χK-S = 0.004, 0.007±Ratio = 0.772
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
Z1b
bb{R}h 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
hheta Z1b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z1b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
2 /ndf = 72.7/982χK-S = 0.343, 0.007±Ratio = 0.772
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
1
10
210
Z1b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
hhmass Z1b
h mass [GeV] 0 50 100 150 200 250 300 350 400
E ve
nt s/
2 G
eV
1
10
210
310
Z1b
h mass [GeV] 0 50 100 150 200 250 300 350 400
D at
a/ M
2 /ndf = 75.6/982χK-S = 0.143, 0.007±Ratio = 0.772
h mass [GeV] 0 50 100 150 200 250 300 350 400
E ve
nt s/
2 G
eV
1
10
210
310
Z1b
h mass [GeV] 0 50 100 150 200 250 300 350 400
D at
a/ M
hhpt Z1b
[GeV] T
h p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
h p 0 50 100 150 200 250 300 350 400
D at
a/ M
[GeV] T
h p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
h p 0 50 100 150 200 250 300 350 400
D at
a/ M
hAdEta Z1b
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
210
310
Z1b
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
2 /ndf = 140.5/982χK-S = 0.000, 0.007±Ratio = 0.772
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
E ve
nt s
210
310
Z1b
ZhηA 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
D at
a/ M
hAdR Z1b
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
310
Z1b
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
2 /ndf = 162.0/982χK-S = 0.000, 0.007±Ratio = 0.772
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
E ve
nt s
1
10
210
310
Z1b
Zh{R}A 0 1 2 3 4 5 6 7 8 9 10
D at
a/ M
hAeta Z1b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
210
Z1b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
2 /ndf = 66.7/982χK-S = 0.064, 0.007±Ratio = 0.772
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
E ve
nt s
210
Z1b
ηh -5 -4 -3 -2 -1 0 1 2 3 4 5
D at
a/ M
hAmass Z1b
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
E ve
nt s/
6 G
eV
1
10
210
310
Z1b
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
D at
a/ M
2 /ndf = 95.7/982χK-S = 0.000, 0.007±Ratio = 0.772
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
E ve
nt s/
6 G
eV
1
10
210
310
Z1b
A mass [GeV] 0 100 200 300 400 500 600 700 800 900 1000
D at
a/ M
hApt Z1b
[GeV] T
A p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
A p 0 50 100 150 200 250 300 350 400
D at
a/ M
[GeV] T
A p 0 50 100 150 200 250 300 350 400
E ve
nt s/
4 G
eV
1
10
210
310
[GeV] T
A p 0 50 100 150 200 250 300 350 400
D at
a/ M
hCosTheta1 Z1b
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
Z1b
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
2 /ndf = 62.5/982χK-S = 0.208, 0.007±Ratio = 0.772
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
Z1b
1θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
hCosTheta2 Z1b
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
E ve
nt s
210
Z1b
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
D at
a/ M
2 /ndf = 71.1/982χK-S = 0.938, 0.007±Ratio = 0.772
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
E ve
nt s
210
Z1b
2θ#cos 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
D at
a/ M
hCosThetaStar Z1b
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
310
Z1b
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
2 /ndf = 132.2/982χK-S = 0.000, 0.007±Ratio = 0.772
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
E ve
nt s
210
310
Z1b
*θ#cos -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
D at
a/ M
hPhi1 Z1b
1 φ
E ve
nt s
210
D at
a/ M
1 φ
E ve
nt s
210
D at
a/ M
hPhi Z1b
E ve
nt s
210
D at
a/ M
φ -3 -2 -1 0 1 2 3
E ve
nt s
210
D at
a/ M
Conclusion
At preselection level, the difference of the two dataset is important, expecially for the lower part of the jets pT spectrum.
However, the comparison with data in the Zbb control region shows a very good agreement for both dataset
the selection for the Z2b CR reduces any difference in the Jet pt spectrum to a negligible amount;
on the other hand, any difference present at preselection level is hidden underneath the huge DY0b;
Same comparison on Z1B CR show no significan discrepancies in shape, either
but a problem innormalization, likely due to double counting in Z+1b sample definition, due to lack of b-parton threshold in Zbb sample
Conclusion (II)
In summary, we can use either dataset for the signal region as far as the distribution are concerned
the issue in normalization suggests to stay with the actual DY inclusive/exclusive dataset
Moreover, in the SR: Zbb has 18 988 events, DY+bb has 38 956
maybe use the new Zbb one to possibly study MC systematics which might be already under control from the comparison of data and MC in the Z2b CR.
Intro

a comparison of different zbb datasetlacaprar/talks/azh_zbb... · 2014. 3. 4. · intromc vs mcdata...

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