an eft interpretation of stxs measurements at cms
TRANSCRIPT
An EFT interpretation of STXS measurements at CMS
J. Langford, E. Scott, N. Wardle
Imperial College London
Pushing the Boundaries Workshop19 Sept 2019
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 0 / 18
IntroductionTheory: EFT increasingly popular tool to investigate BSM physicsI large interest in Higgs sector ⇒ substantial developments in recent yearsI in-light of no NP @ TeV scale, assume exists at Λ� mH
L = LSM +1
Λ2L6 +
1
Λ4L8 + ...
I dynamics: described through higher dim operators featuring SM fields
Experiment: Simplified Template Cross Section (STXS) frameworkI natural progression of per-production mode signal strengths, µi
I measure XS: increasingly granular regions of Higgs phase space
Bridging the gap: EFT interpretation of STXS measurementsI re-parametrize STXS bins in terms of EFT Wilson coefficients
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 1 / 18
Overview
1 Simplified Template Cross Sections (STXS)I IntroductionI StagesI Status of STXS measurements @ CMS
2 Re-interpretation in an EFT frameworkI Higgs Effective LagrangainI Deriving an EFT parametrization for STXS measurementsI Examples: EFT parametrization
3 Constraining EFT parameters: χ2 analysisI Results
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 2 / 18
STXS: introductionCoherent framework for increasingly granular Higgs measurementsI isolate mutually exclusive regions of Higgs phase space (bins)I split by production mode + kinematics
Aims: maximise experimental sensitivity whilst systematically reducing theorydependence folded into measurementsI design bins to have constant theory unc.I + isolate possible BSM physicsI coherence permits combinations across decay channels
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 3 / 18
StagesEvolution of framework (with increasing stats) defined in stages:I 0: SM production modesI 1: splitting by kinematic properties (pH
T , Njets,...)I 1.1: revision based on expected sensitivity of full Run 2 dataset
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 4 / 18
Status of STXS measurements @ CMS
2016 combination of Stage 0 measurements: [Eur. Phys. J. C (2019) 79: 421]
(EW qqH)
ggF bb̄H tHtt̄HVBF
(H+ leptonic V )
V H
qq̄ →WH
qq̄ → ZH
gg → ZH
VBF
H+ had. V
(Run1-like)
ρ
1−
0.8−
0.6−
0.4−
0.2−
0
0.2
0.4
0.6
0.8
1
-0.04 0.00 0.00 0.00 0.00 -0.02 0.02 0.00 0.03 0.03 1.00
-0.67 -0.30 -0.32 -0.31 -0.20 -0.38 0.31 0.40 0.58 1.00 0.03
-0.73 -0.26 -0.07 -0.31 -0.20 -0.45 0.33 0.28 1.00 0.58 0.03
-0.27 -0.27 -0.36 -0.18 -0.13 -0.32 0.21 1.00 0.28 0.40 0.00
-0.28 -0.13 -0.09 -0.63 -0.42 -0.52 1.00 0.21 0.33 0.31 0.02
0.38 0.17 0.11 0.37 0.24 1.00 -0.52 -0.32 -0.45 -0.38 -0.02
0.18 0.08 0.06 0.24 1.00 0.24 -0.42 -0.13 -0.20 -0.20 0.00
0.28 0.12 0.09 1.00 0.24 0.37 -0.63 -0.18 -0.31 -0.31 0.00
-0.05 0.13 1.00 0.09 0.06 0.11 -0.09 -0.36 -0.07 -0.32 0.00
0.13 1.00 0.13 0.12 0.08 0.17 -0.13 -0.27 -0.26 -0.30 0.00
1.00 0.13 -0.05 0.28 0.18 0.38 -0.28 -0.27 -0.73 -0.67 -0.04
ZZ
Bgg
Hσ
ZZ
BV
BF
σ
ZZ
BH
+V
(qq)
σ
ZZ
B )ν
H+
W(l
σ
ZZ
B )ν
νH
+Z
(ll/
σ
ZZ
BttHσ
ZZ
/Bbb
B
ZZ
/BττB
ZZ
/BW
WB
ZZ
/BγγB
ZZ
/Bµ
µB
ZZ/Bµµ
B
ZZ/Bγγ
B
ZZ/BWWB
ZZ/BττB
ZZ/BbbB
ZZBttHσ
ZZB)ννH+Z(ll/σ
ZZB)νH+W(lσ
ZZBH+V(qq)σ
ZZBVBFσ
ZZBggHσ
CMSSupplementary (13 TeV)-135.9 fb
(pb
)S
MZ
Z /
BZ
Z x
Biσ 1−10
1
10
210 H→gg
VBF
H+V(qq)
)νH+W(l
)ννH+Z(ll/
ttH+tH
Stage 0 Simplified Template Cross Sections| < 2.5
H|y
Observed syst)⊕ (stat σ1± syst)⊕ (stat σ2±
(syst)σ1±SM prediction
ZZ
/ B
iB
2−10
1−10
1
10
210 bbWW
ττ
γγµµ
(13 TeV)-135.9 fbCMS
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 5 / 18
Status of STXS measurements @ CMSStage 1 measurements in most decay channels: γγ, VH(bb), ττ
Run 2 Legacy: adhere to stage 1.1 binning schemeI public 1.1 measurements in 4` using full dataset
theoσ/procσ2− 0 2 4 6 8 -0.0
+1.7 0.0 qqH other -0.0
+0.7 0.0 qqH 3J-like -0.5
+0.6 1.3 qqH 2J-like -0.0
+0.5 0.0 ggH VBF-like -1.2
+1.1 2.8 ggH 2J BSM -0.6
+0.8 0.6 ggH 2J high -1.1
+1.0 2.7 ggH 2J med -0.3
+1.4 0.3 ggH 2J low -1.5
+1.6 1.8 ggH 1J BSM -0.7
+1.0 2.0 ggH 1J high -0.4
+0.5 0.5 ggH 1J med -0.6
+0.7 1.5 ggH 1J low-0.20+0.20 1.17 ggH 0J
profiledHm
Observation
SM Prediction
Preliminary CMS
γγ→H
TeV) (13-1 77.4 fb
Intermediate combination:I frankenstein of different stagesI direct STXS meas. not possible⇒ motivates interpretations...
SMσ/σ0 1 2 3 4 5 6 7 8 9 10
-0.07+0.90 0.07H,tHtt-0.57+1.20 0.57qqH-2j/mJJ[60-120]-0.00+1.57 0.00VH/pTV>150-1.85+2.49 3.21VH/pTV[0-150]-0.00+0.73 0.00qqH-2j/pT>200-0.00+2.43 0.00qqH-rest-2.89+2.88 2.89qqH-3j/mJJ>350-0.90+1.17 0.93qqH-2j/mJJ>700-1.71+1.91 1.71qqH-2j/mJJ[350,700]-0.47+0.51 0.47ggH/pT>200-0.00+3.28 0.00ggH-2j/mJJ>350-0.75+0.87 1.16ggH-2j/pT[120-200]-0.80+0.83 1.59ggH-2j/pT[60-120]-1.13+1.35 1.47ggH-2j/pT[0-60]-0.96+1.09 1.52ggH-1j/pT[120-200]-0.51+0.41 0.82ggH-1j/pT[60-120]-0.51+0.48 0.78ggH-1j/pT[0-60]-0.17+0.18 1.06ggH-0j/pT[10-200]-0.25+0.28 0.87ggH-0j/pT[0,10]
0.06
(fb)SMσ4l→ZZ→H
0.050.030.110.020.250.040.070.050.070.100.110.230.160.100.570.882.530.80
profiledHm
(13 TeV)-1137.1 fbCMS Preliminary
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 6 / 18
Re-interpretation in an EFT frameworkGoal: parametrize each STXS bin in terms of EFT parameters
Higgs Effective Lagrangian (HEL): 39 flavour independent dim-6 operators
LHEL = LSM +∑j
cjOj
I NP: deviations from zero in HEL parameters, cj
Require scaling functions: µi (cj) = σEFTi /σSM
iI for each STXS bin, i
σEFTi = σSM
i + σinti + σBSM
i
=⇒ µi (cj) = 1 +∑j
Ajcj +∑jk
Bjkcjck
Task: derive Aj and Bjk coefficients for STXS binsJ. Langford STXS to EFT Pushing the Boundaries 19.9.19 7 / 18
EFT parametrization: derivation
µi (cj) = 1 +∑j
Ajcj +∑jk
Bjkcjck
Scaling functions for stage 1 bins calc. previously: [LHCHXSWG-INT-2017-001]I use same approach to derive Aj/Bjk for stage 0, 1 & 1.1 binsI useful for validation: compare stage 1 coefficientsI also provide decay channel parametrization: Γf (cj)
1 Generate events per Higgs prod. mode (LO): Madgraph w/ Pythia showering
2 Import HEL (UFO): reweight events for different points in HEL param space⇒ SM: all cj = 0⇒ vary cj individually: (cj = w,0,...,0), (0,w,0,...,0), ...⇒ pairwise to calc. Bjk cross terms (j 6= k): (w,w,0,...0), (w,0,w,0,...,0), ...
3 Propagate events through Rivet tool: STXS classification (0, 1 and 1.1)
4 Extract dependence of STXS bin, i , on cj (or cjck): Aj & Bjk
⇒ comparing reweighted cross section to SM
WH Leptonic
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 8 / 18
EFT parametrization: stage 0
Varying cj individually...
H→gg Hqq→qq νHl→qq Hll→qq ttH→gg/qq
1−10
1
10
(a
.u.)
iσ
STXS Stage 0 HEL UFO
SM = 5e-05Gc
= 0.05HWc = 0.05Bc
= 0.01WWc = 0.5uc
OG = |H|2GAµνG
A,µνOHW = i(DµH)†σa(DνH)W a
µν OB = i(H†←→D H)∂νBµν
OWW = i(H†σa←→D H)DνW aµν Ou = yu |H2|Q̄LH
†uR + h.c.
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 9 / 18
EFT parametrization: stage 1.1 qqH
Beyond stage 0: account for shape effects as well as total rates
>25 GeV
HjjT
<200 GeV, p
HT
>700 GeV, pjj
2J, m≥
<25 GeV
HjjT
<200 GeV, p
HT
>700 GeV, pjj
2J, m≥
>25 GeV
HjjT
<200 GeV, p
HT
[350,700] GeV, p
∈jj
2J, m≥
<25 GeV
HjjT
<200 GeV, p
HT
[350,700] GeV, p
∈jj
2J, m≥
>200 GeV
HT
>350 GeV, pjj
2J, m≥
[120,350] GeV
∈jj
2J, m≥
[60,120] GeV
∈jj
2J, m≥
[0,60] GeV
∈jj
2J, m≥ 1J 0J
1−10
1
(a
.u.)
iσ
Hqq→STXS Stage 1.1 qq HEL UFO
SM = 0.05HWc = 0.2HBc = 0.03WWc
= 0.1Bc
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 10 / 18
Total scaling functionsTotal scaling: product of STXS and decay parametrizationFor signal (i ,f ):
µfi (cj) = σEFT
i /σSMi × BREFT(H→ f)/BRSM(H→ f)
I production: calculated Aj/Bjk ourselvesI decay: taken directly from [LHCHXSWG-INT-2017-001]
e.g. Stage 0
×H → γγ
10− 5− 0 5 10 15 20
)5 (10Gc
20−
15−
10−
5−
0
5
10)4 (
10Ac
2
4
6
8
10
12
) j(cf iµ
γγ → H, H →gg
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 11 / 18
Constraining the EFT parameters: χ2
Construct χ2 function: using 2016 combination stage 0 measurements
χ2 = (x − µ)TV −1(x − µ)
I x : vector of STXS measurements (cross-sections + ratios of BRs)I µ: vector of respective EFT parametrizations (functions of cj)I Vij = ρijσiσj : covariance matrix of STXS measurements (symmetrized errors)
Constraints: vary cj and extract χ2
(pb
)S
MZ
Z /
BZ
Z x
Biσ 1−10
1
10
210 H→gg
VBF
H+V(qq)
)νH+W(l
)ννH+Z(ll/
ttH+tH
Stage 0 Simplified Template Cross Sections| < 2.5
H|y
Observed syst)⊕ (stat σ1± syst)⊕ (stat σ2±
(syst)σ1±SM prediction
ZZ
/ B
iB
2−10
1−10
1
10
210 bbWW
ττ
γγµµ
(13 TeV)-135.9 fbCMS
ρ
1−
0.8−
0.6−
0.4−
0.2−
0
0.2
0.4
0.6
0.8
1
-0.04 0.00 0.00 0.00 0.00 -0.02 0.02 0.00 0.03 0.03 1.00
-0.67 -0.30 -0.32 -0.31 -0.20 -0.38 0.31 0.40 0.58 1.00 0.03
-0.73 -0.26 -0.07 -0.31 -0.20 -0.45 0.33 0.28 1.00 0.58 0.03
-0.27 -0.27 -0.36 -0.18 -0.13 -0.32 0.21 1.00 0.28 0.40 0.00
-0.28 -0.13 -0.09 -0.63 -0.42 -0.52 1.00 0.21 0.33 0.31 0.02
0.38 0.17 0.11 0.37 0.24 1.00 -0.52 -0.32 -0.45 -0.38 -0.02
0.18 0.08 0.06 0.24 1.00 0.24 -0.42 -0.13 -0.20 -0.20 0.00
0.28 0.12 0.09 1.00 0.24 0.37 -0.63 -0.18 -0.31 -0.31 0.00
-0.05 0.13 1.00 0.09 0.06 0.11 -0.09 -0.36 -0.07 -0.32 0.00
0.13 1.00 0.13 0.12 0.08 0.17 -0.13 -0.27 -0.26 -0.30 0.00
1.00 0.13 -0.05 0.28 0.18 0.38 -0.28 -0.27 -0.73 -0.67 -0.04
ZZ
Bgg
Hσ
ZZ
BV
BF
σ
ZZ
BH
+V
(qq)
σ
ZZ
B )ν
H+
W(l
σ
ZZ
B )ν
νH
+Z
(ll/
σ
ZZ
BttHσ
ZZ
/Bbb
B
ZZ
/BττB
ZZ
/BW
WB
ZZ
/BγγB
ZZ
/Bµ
µB
ZZ/Bµµ
B
ZZ/Bγγ
B
ZZ/BWWB
ZZ/BττB
ZZ/BbbB
ZZBttHσ
ZZB)ννH+Z(ll/σ
ZZB)νH+W(lσ
ZZBH+V(qq)σ
ZZBVBFσ
ZZBggHσ
CMSSupplementary (13 TeV)-135.9 fb
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 12 / 18
Stage 0 combination: χ2 resultsConsider variations in subset of HEL params:⇒ cG , cA, cu, cd , cl , cHW , cWW − cBI leading terms in measured processes + not tightly constrained by other dataI not including CP-odd operators: do not enter STXS observables at leading-orderI S = cWW + cB : precision EWK param, strong exp. constraintI fix other cj = 0
Solid: profile other HEL params. Dashed: fix other HEL params to 0
10 5 0 5 10
cG x 105
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
6
5
4
3
2
1
0
1
2
3
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cd_x01
cA_x04
cWWMinuscB_x02
cHW_x02
10 5 0 5 10
cA x 104
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
15
10
5
0
5
10
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cG_x05
cd_x01
cWWMinuscB_x02
cHW_x02
cG constraint primarily from ggH, cA from H→ γγ
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 13 / 18
Stage 0 combination: χ2 results
Solid: profile other HEL params. Dashed: fix other HEL params to 0
15 10 5 0 5 10 15 20
cHW x 102
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
8
6
4
2
0
2
4
6
8
10
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cA_x04
cd_x01
cWWMinuscB_x02
cG_x05
15 10 5 0 5 10 15
(cWW − cB) x 102
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
10
5
0
5
10
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cHW_x02
cA_x04
cd_x01
cG_x05
Both affect HVV vertices ⇒ constraints from VBF + VH
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 14 / 18
Stage 0 combination: χ2 results
Solid: profile other HEL params. Dashed: fix other HEL params to 0
Ou: affects Htt vertex ⇒ constraint from ttH
20 15 10 5 0 5 10
cu x 101
0
1
2
3
4
5
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
20 15 10 5 0 5 10
cu x 101
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
10
5
0
5
10
Pro
file
d E
FT c
oeff
.
cl
cG_x05
cA_x04
cd_x01
cWWMinuscB_x02
cHW_x02
Turning point in µ for ttH: two values of cu give µ = 1
Leads to double minimum in χ2 distribution
Rest of χ2 distributions + scaling functions in Back-up
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 15 / 18
Stage 0 combination: summary
20− 15− 10− 5− 0 5 10Parameter value
x 10uc
x 10lc
5 x 10G
c
4 x 10A
c
x 10d
c
2) x 10B
c− WW
(c
2 x 10HW
c
(13 TeV)-135.9 fb
Observed
σ1±
σ2±
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 16 / 18
CMS Higgs Combination: EFT interpretation
Run 2 Legacy: stage 1.1 combination of major H decay channelsI direct XS measurements + interpretation
Intermediate combinations: mixture of stage 0, 1 and 1.1 processesI binning schemes not backwards compatible: direct XS measurements not possibleI EFT interpretation is: now have complete set of µf
i (HEL)
For final results: χ2 ⇒ full maximum-likelihood fitI confine signal process (i ,f ) to scale according to relevant µf
i (cj)I likelihood scan over cj ⇒ extract constraints
Transition from HEL to SMEFT interpretation (SMEFTsim model)I change of basis (SILH → Warsaw)I permits combinations with other areas of HEP: VBS, top, SM
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 17 / 18
Summary
Summarised status of STXS measurements in CMS
EFT interpretation of STXSI derived µi (cj): describe how XS scales as function of HEL parameters
Presented results based on χ2 analysis of CMS 2016 Higgs combination
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18
χ2 results: cG
10 5 0 5 10
cG x 105
0.0
0.5
1.0
1.5
2.0
2.5
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
10 5 0 5 10
cG x 105
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
6
5
4
3
2
1
0
1
2
3
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cd_x01
cA_x04
cWWMinuscB_x02
cHW_x02
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18
χ2 results: cA
10 5 0 5 10
cA x 104
0.0
0.5
1.0
1.5
2.0
2.5
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
10 5 0 5 10
cA x 104
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
15
10
5
0
5
10
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cG_x05
cd_x01
cWWMinuscB_x02
cHW_x02
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18
χ2 results: cHW
15 10 5 0 5 10 15 20
cHW x 102
0
5
10
15
20
25
30
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
15 10 5 0 5 10 15 20
cHW x 102
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
8
6
4
2
0
2
4
6
8
10
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cA_x04
cd_x01
cWWMinuscB_x02
cG_x05
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18
χ2 results: cWW − cB
15 10 5 0 5 10 15
(cWW − cB) x 102
0
2
4
6
8
10
12
14
16
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
15 10 5 0 5 10 15
(cWW − cB) x 102
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
10
5
0
5
10
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cHW_x02
cA_x04
cd_x01
cG_x05
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18
χ2 results: cu
20 15 10 5 0 5 10
cu x 101
0
1
2
3
4
5
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
20 15 10 5 0 5 10
cu x 101
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
10
5
0
5
10
Pro
file
d E
FT c
oeff
.
cl
cG_x05
cA_x04
cd_x01
cWWMinuscB_x02
cHW_x02
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18
χ2 results: cd
20 15 10 5 0 5 10
cd x 101
0
1
2
3
4
5
6
7
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
20 15 10 5 0 5 10
cd x 101
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
15
10
5
0
5
10
15
Pro
file
d E
FT c
oeff
.
cu_x01
cl
cG_x05
cA_x04
cWWMinuscB_x02
cHW_x02
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18
χ2 results: c`
2.0 1.5 1.0 0.5 0.0 0.5 1.0 1.5 2.0
cl
0
2
4
6
8
10
12
14
16
µ
ggH_hzz_
qqH_hzz_
ttH_hzz_
ZH_lep_hzz_
WH_lep_hzz_
R_BR_hbbBR_hzz_
R_BR_httBR_hzz_
VH_had_hzz_
R_BR_hwwBR_hzz_
R_BR_hggBR_hzz_
2.0 1.5 1.0 0.5 0.0 0.5 1.0 1.5 2.0
cl
0
2
4
6
8
10
∆χ
2
Profile cj
Fix cj = 0
10
5
0
5
10
15
Pro
file
d E
FT c
oeff
.
cu_x01
cG_x05
cA_x04
cd_x01
cWWMinuscB_x02
cHW_x02
J. Langford STXS to EFT Pushing the Boundaries 19.9.19 18 / 18