Recent Top/EW Results from CDF
June 25, 2005
TeV Connection
1
Introduction
&
% (→ ν)*
+,
!
-
"#$
.
%&
'
/
June 25, 2005
TeV Connection
2
Diboson Production
"#$
'
"
00 1*22
σ
DIL
σ WW
= 14.6+−55..81 (stat) +−13..80 (syst) ± 0.9(lum) pb
,34
/
536
7
LTRK
σ WW
= 24.2 ± 6.9(stat) +−55..72 (syst) ± 1.5(lum) pb
(%((
σ 8 39:*
,3
"#$
% (
ν 1 ; µ4
%(
→
<
#
)*
$
)
=
; >>±?@±6A 1=7 ; B34
= 8 A2
1B9C "D4
June 25, 2005
TeV Connection
3
Anomalous Couplings
,
,
0
E
F7
G
/
∆κ
λ
H
& 1ν4
II
H
B9C "D
J
,2:A* < ∆κ < 2:9@
,2:6* < λ < 2:69
June 25, 2005
TeV Connection
4
W Charge Asymmetry
/
!
!
A( yW ) =
dσ + / dyW − dσ − / dyW
dσ + / dyW + dσ − / dyW
7
7
H#$
H#$
<
<
.
CDF Run II Preliminary
I,
.
1"#$ ' 00
H'#4
<
AW
1
4
+
June 25, 2005
Alepton
TeV Connection
5
W Charge Asymmetry (2)
HG
θK
σ1
σ1 4
L
N
4
M
0
.
"
H#$
H
7
June 25, 2005
TeV Connection
6
Top Event Selection
1
4
5322C
7
,
→
b-tag efficiency
!
M
#
J
!
,H
&
SecVtx Tag Efficiency for Top b-Jets
0.6
Tight SecVtx
Loose SecVtx
0.5
0.4
0.3
0.2
Top MC scaled to match data
Only b-jets with ET>15 GeV
0.1
D
)
J
!
,H
&
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
jet η
%
,
0
/
&
5>2C
June 25, 2005
,
52:9C
/
/
,
,
TeV Connection
7
Top Cross Section with B-Tagging
Number of Events
)
!
J
≥3 ,
7%+ ; 32*%6>
–
Wbb
-1
≥* ,
CDF RunII Preliminary (318 pb )
2
Mtop = 178 GeV/c
500
Wcc
Wc
Mistags
Non-W
400
Single Top
Diboson+Z→ττ
t t ,σ=7.9pb
300
tt ± 1 σ
Data, 318 pb
-1
200
7%+ ; *B:?%6:6
HT > 200 GeV For Njets ≥ 3
100
≥6
7
0
1
2
4
≥5
Number of Jets
3
Wbb
Number of Events
-1
#
)
"
63@
σ ; ?:B ± 2:B ± 2:B
σ ; @:? ± 3:? ± 3:9
,3
J
1≥3
1≥*
4
4
CDF RunII Preliminary (318 pb )
22
2
Mtop = 178 GeV/c
20
Wcc
18
Non-W
16
Single Top
Wc
Mistags
Diboson+Z→ττ
14
t t ,σ=8.7pb
12
tt ± 1 σ
10
Data, 318 pb
-1
8
6
HT > 200 GeV For Njets ≥ 3
4
2
0
1
June 25, 2005
TeV Connection
2
3
4
≥5
Number of Jets
8
Top Cross Section with Kinematics
Arbitrary Units
NN Templates (Normalized to Unit Area)
)
,
!
7
%
0.2
t t signal (mTop = 178 GeV)
0.18
Electroweak backgrounds
0.16
QCD multijet backgrounds
0.14
Njets ≥ 3
0.12
0.1
0.08
.
0.06
)
0.04
. E&
)6
F
)3
0.02
)3
0
0
"
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
NN Output
-1
CDF Preliminary (347 pb )
7
multijet
W+jets
tt
combined
data
160
O"#
140
/
A:>C
events/ 0.04
120
Njets ≥ 3
100
signal: 148.2 ± 20.6 events
multijet: 43.2 ± 3.7 events
Wjets: 744.4 ± 32.8 events
80
60
40
20
0
0
0.1 0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
ANN output
June 25, 2005
TeV Connection
9
Top Cross Section Summary
$
10
; 3?9
0
Cacciari et al. JHEP 0404:068 (2004)
*
I%
52:*
; 3?@ I%
CDF Run 2 Preliminary
Dilepton:
Combined
-1
1.7
7.0 ± 2.4
2.1 ± 1.2
Dilepton:
MET, # jets
-1
1.1
8.6 ± 2.5
2.4 ± 1.1
Lepton+Jets:
Kinematic NN
-1
1.0
6.3 ± 0.8
±
0.8 1.0
Lepton+Jets:
Vertex Tag
-1
0.9
8.1 ± 0.9
0.9 ± 0.9
Lepton+Jets:
Double Vertex Tag
-1
1.5
9.0 ± 1.7
1.7 ± 1.5
Lepton+Jets:
Vertex Tag+Kinematic
-1
1.2
6.0 ± 1.6
1.6 ± 1.2
Lepton+Jets:
Jet Prob Tag
-1
1.3
5.8 ± 1.3
1.2 ± 1.3
Lepton+Jets:
Soft Muon Tag
-1
1.3
5.3 ± 3.3
3.3 ± 1.0
All Hadronic:
Vertex Tag
-1
4.7
7.8 ± 2.5
2.5 ± 2.3
(L= 200pb )
*
,
(L= 193pb )
(L= 347pb )
12
CDF Run 2 Preliminary
(L= 318pb )
10
2
mt=170
GeV/c
mt=175
GeV/c
mt=180
GeV/c
2
2
4
2
Lepton+Jets: Vertex Tag
6
(L= 162pb )
Dilepton: Combined
8
Combined
σ(pp → tt) (pb)
(L= 318pb )
CDF Run 1
2
Assume mt=175 GeV/c
Cacciari et al. JHEP 0404:068 (2004) mt =175 GeV/c
0
1800
June 25, 2005
1850
1900
1950
(L= 162pb )
(L= 193pb )
(L= 165pb )
2
2000
s (GeV)
0
0
TeV Connection
2
4
6
8
10
σ(pp → t t) (pb)
12
14
10
Anomalous Semileptonic Decays
0 "#$
)
/
,
E
1H
.
F
: ' : #>B 2?*22A4
/
'
,
.
0 3>*
00
Other backgrounds
5
QCD
W+HF, Z+HF
4
tt scaled to σt t = 5.3 pb
-1
Data L = 162 ± 10 pb
3
2
1
0
/
0
,
,3
/
20
40
60
80
P +'
100
Tagged Jet E T [GeV/c]
120
140
CDF II Preliminary
12
Number of tagged events
0 '
Number of tagged jet / 10 GeV/c
CDF II Preliminary
Other backgrounds
QCD
10
W+HF, Z+HF
tt scaled to σt t = 5.3 pb
8
-1
Data L = 162 ± 10 pb
6
4
2
0
1
2
3
Number of jets in W+jets
June 25, 2005
TeV Connection
11
Top Mass Measurements
80.5
7
80.4
mH [GeV]
114
300
150
Fractional systematic uncertainty
"
/
∆α
80.3
J'
/
LEP1, SLD data
−
LEP2 (prel.), pp data (CDF-II mt)
68% CL
"
D&H%7D# (,
.
<
mW [GeV]
7
!
J
G
=
1000
175
200
mt [GeV]
0.15
Systematic uncertainties in 0.2<η<0.6. Cone 0.4
Run II
0.1
Run I
Run II 2004
0.05
0
-0.05
-0.1
-0.15
20
40
60
80
100
120
140
160
180
200
Corrected jet PT (GeV)
June 25, 2005
TeV Connection
12
Lepton+Jets Template Method
All Events
2
RMS = 27 GeV/c
800
Corr. Comb (47%)
600
2
RMS = 13 GeV/c
400
200
0
Events/5 GeV/c
!
1000
1-tag(T)
2
2-tag
χ*
!
+,
Q
100 150 200 250 300 350
2
mreco
(GeV/c )
t
4
All Events
2
RMS = 31 GeV/c
Corr. Comb (18%)
2
RMS = 13 GeV/c
100 150 200 250 300 350
2
mreco
(GeV/c )
t
χ*
"
Events/5 GeV/c
1
700
600
500
400
300
200
100
0
2
1-tag(L)
Events/5 GeV/c2
"
≥A
)
Events/5 GeV/c2
D
#
CDF Run II Preliminary
2000
1800
1600
1400
1200
1000
800
600
400
200
0
900
800
700
600
500
400
300
200
100
0
All Events
2
RMS = 32 GeV/c
Corr. Comb (28%)
2
RMS = 13 GeV/c
100 150 200 250 300 350
2
mreco
(GeV/c )
t
0-tag
All Events
2
RMS = 37 GeV/c
Corr. Comb (20%)
2
RMS = 12 GeV/c
100 150 200 250 300 350
2
mreco
(GeV/c )
t
Reconstructed Top Mass
2
+
Events/(15 GeV/c )
-1
stat
JES
syst
mt = 173.5+−22..76 ± 2.5 ± 1.7 GeV/c 2
mt = 173.5+− 44..01 GeV/c 2
June 25, 2005
TeV Connection
40
35
30
25
20
15
10
5
0
CDF Run II Preliminary (318 pb )
2-tag
1-tag(T)
1-tag(L)
0-tag
Total Signal+Bkgd Fit
Total Bkgd Fit
100 150 200 250 300 350 400
2
mreco
(GeV/c )
t
13
,
M
Probability density
CDF II Preliminary
,
0.022
0.02
Mean
RMS
154
30.36
0.018
0.016
0.014
2
150 GeV/c
0.012
0.01
Probability density
Dilepton Template Method
0.008
0.012
2
170 GeV/c
0.01
0.008
0.002
100
150
200
250
300
Mtop (GeV/c )
Mean
RMS
0.016
178
32.41
0.014
0.012
2
0.01
0
350 2
190 GeV/c
0.008
100
150
200
250
300
RMS
0.014
350 2
Mtop (GeV/c )
Mean
0.016
190.1
34.58
0.012
0.01
2
210 GeV/c
0.008
0.006
0.006
0.004
0.004
0.002
0.002
η
0.014
0.004
Probability density
7
$
0
Probability density
17%+ ; 66%364
0.016
0.006
0.002
1η1ν4 φ1ν4 HG1 44
)
166.2
32.1
0.006
0.004
7
Mean
RMS
0.018
0
100
150
200
250
300
0
350 2
Mtop (GeV/c )
100
150
200
250
300
350 2
Mtop (GeV/c )
-1
CDF Run II Preliminary (358.6 pb )
ηR
0
"
'
)
/
Likelihood vs top mass
10
-ln(L/Lmax)
2
Events/(10 GeV/c )
,&
Data (45 evts)
8
Signal + Bkgd
Bkgd only
6
8
7
6
5
4
3
2
1
0
135 150 165 180 195
2
Mt (GeV/c )
4
2
mt = 170.6+−76..16 ( stat) ± 4.4( syst) GeV/c 2
June 25, 2005
0
80
TeV Connection
100
120
140
160
180
200
220
240 260
280
2
Reconstructed Mass (GeV/c )
14
Dynamical Likelihood Method
L ( M top ) =
i
M
E
,
F
It
Is
2π 4
F ( z a , zb , pT ) | M |2 w(x, y )dx
Flux
D ;
/
$;
:
;
G
)
/
;
7
,
/
M
/
5*
L
/
-1
CDF Run II Preliminary (318 pb )
I%
,
2
.
HG
G
Events/(10Gev/c )
/
%
*
)
1>6
18
Total MC Prediction
16
Signal Mtop = 175 GeV
14
Combined Background
12
Data 63 events
10
8
36@4
6
mt = 173.8+−22..75 ( stat) ± 3.3( syst) GeV/c 2
4
mt = 173.8+−44..13 GeV/c 2
0
June 25, 2005
TeV Connection
2
80
100 120 140 160 180 200 220 240 260
2
Per-Event Mass at Maximum Likelihood [GeV/c ]
15
Dilepton Matrix Element
2
P( y | mt ) ≈
/
F ( z a , zb , pT ) M (mt ) w( x, y )dx
7
7
0
1
4
"
/
DL,
53
I%
*
,
mt = 165.3 ± 6.3( stat ) ± 3.6( syst ) GeV/c 2
June 25, 2005
TeV Connection
20
-ln L
)
,
Probability density
S
"
#
CDF Run2 Prelim.
0.15
∫ L dt = 340 pb
-1
10
0
140
160
180
200
M t [GeV]
0.1
0.05
0
140
150
160
170
180
190
M t [GeV]
16
Top Mass Summary
8
&
δ
–
; 6:A
I%
*
1
A:6
'
04
"
Preliminary
Tevatron Average
Tevatron Preliminary
(June 24 2005)
(pending final CDF/D0 review)
World Average (CDF+D0)
(Run 1 + Run 2)
174.3 ± 2.0
2.0 ± 2.8
/
Run 1 D0 Lepton+Jets
(L= 100 pb -1)
1
'
"#$
04
Run 1 D0 Dilepton
-1
$
Q&7
' 00
(L= 100 pb )
δ
180.1 ± 3.6
3.6 ± 3.9
; *,6
I%
*
top
168.4 ±12.3
12.3 ± 3.6
Lepton+Jets: Mreco+W → jj
173.5 ± 2.7
2.6 ± 3.0
Dilepton: Matrix Element
165.3 ± 6.3
6.3 ± 3.6
(L= 318 pb -1)
Jet Energy Scale from W→jj
2
JES Uncertainty (GeV/c )
4
CDF Run II Preliminary
-1
3.5
(L= 339 pb )
Mtop Systematic Uncertainty
from W→jj Energy Scale Only
3
Lepton+Jets: DLM
2.5
(L= 318 pb -1)
173.8 ± 2.7
2.5 ± 3.3
2
1.5
Dilepton: ν weighting
(L= 358 pb -1)
1
0.5
0
0
June 25, 2005
1
2
3
4
5
6
7
-1
Integrated Luminosity (fb )
8
0
150
TeV Connection
160
170.6 ± 7.1
6.6 ± 4.4
170
180
Top mass (GeV/c2)
190
200
17
Top Mass Interpretation
6
Theory uncertainty
Mt
Run-I average
CDF-II preliminary
5
1
<
; BA)9A,69
<
8 *2@
I%
)
I%
*
4
*
4
∆χ2
"#$
T B9C "D
3
2
1
D&H,00 /
0
7
1
80.70
7
4
7 7S
500
experimental errors 68% CL:
LEP2/Tevatron (mt: world average)
LEP2/Tevatron (mt: CDF RunII)
80.60
MW [GeV]
<
100
mH [GeV]
/
77
Excluded
30
Tevatron (future)
80.50
80.30
77 4
Y
SUS
MSSM
SY
y SU
heav
80.40
1
light
MH =
eV
113 G
SM
MSSM
both models
SM
80.20
eV
400 G
MH =
Heinemeyer, Weiglein ’05
160
165
170
175
180
185
190
mt [GeV]
June 25, 2005
TeV Connection
18
Summary
"#$
'
00
%&
& J9
3
*
J9
6
B
.
G
,
1
7
*22,622
,3
,3
'4
,
7
.
%
M
June 25, 2005
TeV Connection
19