Searches for Neutral 2HDM, MSSM and NMSSM Higgs Bosons at...

Searches for Neutral 2HDM, MSSM and NMSSMHiggs Bosons at the LHC

The Third Annual Large Hadron Collider Physics ConferenceSt. Petersburg

Matthias Schroder (KIT)on behalf of the ATLAS and CMS Collaborations

September 4, 2015

Matthias Schroder ([email protected]) September 4, 2015 1 / 22

Introduction

First New Particle at the LHC: First Sign of New Physics?

1) What are the properties of thenew boson?

I Couplings compatible withSM expectation

I But room for BSM behaviour

2) Here: Is it part of an extendedHiggs sector?

I Constraint: BSM modelsmust contain a SM-like Higgsboson at 125 GeV

AT

LA

S-C

ON

F-2

01

5-0

44

,C

MS

-PA

S-H

IG-1

5-0

02

→ Direct searches for additional Higgs bosons!


Introduction

Models with Extended Higgs SectorsSupersymmetry

Minimal supersymmetric extension MSSMI 2 Higgs doublets → 5 physical bosons

F h, H, A ≡ Φ (neutral), H+, H− (charged)

I 2 tree-level parameters mA and tanβ = vevu/vevd

F Other SUSY parameters enter via radiativecorrections, fixed in benchmark scenarios

I Data: preference for h being the 125 GeV state

Next-to-MSSM NMSSMI 1 additional Higgs singlet → 7 bosons

Generic 2-Higgs-Doublet Models 2HDM

previous presentation

by Eduard Boos

Effective extension of Standard Model adding a Higgs doubletI 5 parameters (no FCNC, mh = 125 GeV):

mA, mH, mH± , tanβ, α = h-H mixing

Different types depending on coupling structureI Type II: u- and d-type fermions couple to different doublets (MSSM)


Introduction

Numerous Neutral-BSM-Higgs-Boson Searches at the LHC

Outline: will present a few recent results

Further NEW results with 2HDM interpretation:

- Heavy H→ ZZ search at ATLAS arXiv:1507.05930 (submitted to Eur. Phys. J.)

see High mass searches for SM like Higgs bosons at the LHC by Song-Ming Wang

- H→ hh→ bbττ search at CMS, CMS-HIG-14-034

see Searches for HH processes at LHC by Andrea Rizzi


http://arxiv.org/abs/1507.05930

https://indico.cern.ch/event/389531/session/0/contribution/7

https://indico.cern.ch/event/389531/session/0/contribution/3

Pseudoscalar A→ Z + h(125) Phys. Lett. B 744 (2015) 163-183, Phys. Lett. B 748 (2015) 221

Pseudoscalar A→ Z + h(125) Search at ATLAS & CMS

Most 2HDMs: A predominantlyproduced by gluon-gluon fusion

Often large B(A→ Z + h) formh + mZ . mA . 2mt

I MSSM: in low-tanβ regionI Can be important also above

2mt in general 2HDMs0.01

0.1

1

140 200 300 400 500

BR(A

)

MA [GeV]

tanβ = 2.5

Mh = 126 GeV

A → tt

A → bbA → hZA → ττ

MSSM tanβ = 2.5

A.

Djo

ua

di,

J.Q

uevillo

n,

JHE

P1

31

0(2

01

3)

02

8


http://dx.doi.org/10.1016/j.physletb.2015.03.054



Pseudoscalar A→ Z + h(125) Search at ATLAS & CMSZ→ ll/νν clean signature

I νν: ATLAS only

B(h→ bb/ττ) typically largeI ττ CMS: CMS-HIG-14-034

mh = 125 GeV constraintdeployed to improve resolution

S/(S

+B) w

eigh

ted

even

ts

0

10

20

30

40

50

60

70

80DataSM HiggsZ+jetsZ+b

bZ+btt, t

VVsyst⊕MC stat

= 400 GeVAm= 500 GeVAm= 600 GeVAm

)µ(ℓ = e, (8 TeV)-1L = 19.7 fb

CMSb ℓℓb→ Zh →A

High mass

[GeV]200 250 300 350 400 450 500 550 600 650 700

Dat

a - B

kg

-40-20

02040

ℓℓbbm

0.059±Data / Bkg = 1.046

300 400 500 600 700 800 900 1000 1100 1200

Eve

nts

/ 8 G

eV

-110

1

10

210

310

410Data 2012

= 500 GeVAmZh(bb)→A

SM ZhDibosonTopMultijetZ+hfZ+clZ+lUncertainty

ATLAS -1 = 8 TeV, 20.3 fbs

2 lep., 2 + 3 jets, 2 tags

[GeV]recAm

300 400 500 600 700 800 900 1000 1100 1200

Dat

a/S

M

0

12 200 400 600 800 1000 1200

Eve

nts

/ 20

GeV

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410Data 2012

= 500 GeVAmZh(bb)→A

SM VhDibosonTopMultijetW+jetsZ+hfZ+clZ+lUncertainty


0 lep., 2 + 3 jets, 2 tags

[GeV]rec,TAm

200 400 600 800 1000 1200

Dat

a/S

M

0

1

2

Peak search in invariant mass (llbb/ττ) and transverse (ννbb) mass





2HDM Interpretation

Exclusion limits in type-II 2HDM, mA = mH = mH± = 300 GeV

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

ATLAS = 8 TeVs

-120.3 fb

=300 GeVAZh m→A2HDM Type II

Obs 95% CL bandσ1±Exp 95% CL bandσ2±Excluded ττ→by A

)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210

)αβcos(-1 -0.5 0 0.5 1

βta

n-110

1

10

Type-II 2HDM

bℓℓb→Zh→A

= 300 GeVAm

(8 TeV)-1L = 19.7 fb

CMS

95% CL limitsObservedExcluded regionExpected

σ 1±Expectedσ 2±Expected

–

Large parts of type-II parameter-space excluded, also at high tanβ




H/A→ Z + A/H CMS-PAS-HIG-15-001

NEW H/A→ Z(ll) + A/H(bb/ττ) at CMS

More general approach: no specific h(125) requirement in final state

Type-II 2HDM interpretation

Either mass hierarchymA > mH or mH > mA

Complementary informationto A→ Zh(125) searches )α-βcos(

-1 -0.5 0 0.5 1

βta

n

-110

1

10CMS Preliminary (8 TeV)-119.8 fb

= 150 GeVAM = 350 GeVHM

2HDM type-II

Obs. Excl.Exp. Excl.

1-sigma

2-sigma

H→ ZA→ llbb

Access to ‘alignment’ region at cos(β − α) ≈ 0


https://cds.cern.ch/record/2014119

MSSM Neutral Higgs-Boson Searches

MSSM Neutral Higgs-Boson Searches

small tanβ

h,H,At, t

g

g

b, b

gg-fusion production→ no b-tagged jet

larger tanβ

h,H,A

b

g

g

b

b-assoc. production→ ≥ 1 b-tagged jets

100 200 300 400 500 600

MA [GeV]

10-4

10-3

10-2

10-1

100

BR

(H)

BR(H -> tt)

BR(H -> bb)

BR(H -> ττ)

BR(H -> µµ)

BR(H -> WW)

LH

C H

igg

s X

S W

G 2

01

3

mh

max, tanβ = 50

B(H→ bb)

B(H→ ττ)

B(H→ µµ)

tanβ = 50

Φ→ bb channel

Very large BChallenging bkg

Φ→ ττ channel

Relatively large BManageable bkg

Φ→ µµ channel

Tiny BExcellent massresolution


MSSM Φ→ ττ Searches

Φ→ ττ Searches: mττ ReconstructionLikelihood approachCMS (ATLAS similar)

Typical resolution of 20%

Total transverse massATLAS in τhτh channel

mT(τ1, τ2)⊕mT(τ1, /ET)⊕mT(τ2, /ET)

Improved separation of signaland QCD-multijet bkg

[GeV]ττm0 50 100 150 200 250 300 350 400 450

[1/

GeV

]ττ

dN

/dm

0

0.05

0.1

0.15

0.2

0.25ττ →Z

= 120 GeVA mττ →A = 200 GeVA mττ →A = 300 GeVA mττ →A

= 8 TeVsCMS Simulation hτµ

CM

S-P

AS

-HIG

-14

-02

9

[GeV]totalTm

0 50 100 150 200 250 300 350 400

Eve

nts

/ 10

GeV

10

210

310

410

Data 2012=30β=350, tanAm

ττ→ZMultijet

+ jetsντ→W & single toptt

OthersBkg. uncertainty

ATLAS , -1L dt = 19.5 fb∫ = 8 TeV, s

trigger categoryhadτhadτhadτhadτ→h/H/A

J.H

igh

En

ergy

Ph

ys.1

1(2

01

4)

05

6


http://cds.cern.ch/record/2041463

http://dx.doi.org/10.1007/JHEP11(2014)056

MSSM Φ→ ττ Searches

Φ→ ττ Search at ATLAS

Channels: eµ, eτh, µτh, τhτh

Event categories based onI Number of b-tagged jetsI Low/high-mass specific selectionI Used triggers

Background composition dependson channel and category

Major contributions measuredfrom data

I Similar techniquesby ATLAS and CMS

[GeV]MMCττm

0 50 100 150 200 250 300 350E

vent

s / 2

0 G

eV0

100

200

300

400

500

600

700Data 2012

=20β=150, tanAmττ→Z

µµee/→Z & single toptt

W+jets & dibosonMultijetBkg. uncertainty

ATLAS , -1L dt = 20.3 fb∫ = 8 TeV, s

tag categoryhadτlepτ→h/H/A

� Z→ ττ : embedding method in Z→ µµ data

� QCD multijets: control sample with inverted τh-identification criteria


MSSM Φ→ ττ Searches J. High Energy Phys. 11 (2014) 056, CMS-PAS-HIG-14-029

Φ→ ττ Results

[GeV]Am100 200 300 400 500 600 700 800 900 1000

βta

n

10

20

30

40

50

60

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80

=17

0 G

eVH

m

=30

0 G

eVH

m

=50

0 G

eVH

m

=70

0 G

eVH

m

= 115 GeVhm

= 122 GeVhm

= 125 GeVhm

= 126 GeVhm

= 126.2 GeVhm

Obs 95% CL limitExp 95% CL limit

σ1 σ2

Obs 95% CL limit

theoryσ 1 ±

-1 L dt = 19.5 - 20.3 fb∫=8 TeV, s ATLAS

ττ → h/H/A = 1 TeV,SUSY

scenario, Mmod+hMSSM m

[GeV]Am200 400 600 800 1000

βta

n

10

20

30

40

50

60

(MSSM,SM)<0.05:SCL

Observed

Expected

Expectedσ 1±

scenariomod+hMSSM m

3 GeV± 125≠ hMSSMm

(7 TeV)-1 (8 TeV) + 4.9 fb-1, 19.7 fbττ→ Preliminary, h,H,ACMS

NEW

Exclusion limits on tanβ in MSSM mmod+h benchmark scenario

Exclusion of tanβ & 5 at low mA, sensitivity up to 1 TeV

Low tanβ region incompatible with mh = 125 GeV

Exclusion of low-mA . 200 GeV region in mmod+h scenario




MSSM Φ→ bb Search CMS-PAS-HIG-14-017 (submitted to J. High Energy Phys.)

NEW Φ→ bb Search at CMS

For not-too-small tanβI Dominant bbΦ productionI Large B(Φ→ bb) ≈ 90%

Selection: ≥ 3 b-tagged jets

Peak search in invariant massdistribution M12 of leading two jets

Huge QCD-multijet backgroundI Largely reduced by 3 b-tag

requirement

Requires dedicated triggers withonline b-tagging

φ

g b

g b

b

b

M12

[GeV]12M0 100 200 300 400 500 600 700 800

a.u.

/ G

eV

0.0

0.2

0.4

0.6

0.8

1.0

1.2

CMS Simulation (8 TeV)

= 200 GeVφm = 350 GeVφm = 500 GeVφm




Data-Driven Background Model

Template for each flavour combination from 2 b-tag dataI Weighted by b-tag probability of un-tagged jet

Additional separation by condensed event b-tag estimator X123

I Based on secondary-vertex masses of 3 leading jets

[GeV]12M0 100 200 300 400 500 600 700 800

a.u.

/ G

eV

0.0

0.2

0.4

0.6

0.8

1.0

(8 TeV)-1CMS, 19.7 fb

(B2+B1+C2,b)b(C1,b)b(Q,b)bbb(B2+B1+C2)bb(C1+Q)

123X0 1 2 3 4 5 6 7 8

a.u.

0.0

0.2

0.4

0.6

0.8

1.0

(8 TeV)-1CMS, 19.7 fb

(B2+B1+C2,b)b(C1,b)b(Q,b)bbb(B2+B1+C2)bb(C1+Q)

2D (M12,X123) background (+signal) templates fit to data




Background-Only Fit ResultsProjection on M12 and X123

1/G

eV12

dN/d

M

0

100

200

300

400

500

600 Data(B2+B1+C2,b)b(C1,b)b(Q,b)bbb(B2+B1+C2)bb(C1+Q)Pre-fit bin-by-bin unc.

= 30)β= 350 GeV, tanA

(mφ bb×10

(8 TeV)-1CMS, 19.7 fb

[GeV]12M

0 100 200 300 400 500 600 700 800 900 1000

Dat

a/B

kg

0.951.001.05

Eve

nts

0

5000

10000

15000

20000

25000Data(B2+B1+C2,b)b(C1,b)b(Q,b)bbb(B2+B1+C2)bb(C1+Q)Pre-fit bin-by-bin unc.

= 30)β= 350 GeV, tanA

(mφ bb×10

(8 TeV)-1CMS, 19.7 fb

123X

0 1 2 3 4 5 6 7 8D

ata/

Bkg

0.951.001.05

Background dominated by processes with 3 b-jets (�+� ≈ 80%)

Data well described by background-only hypothesis




MSSM InterpretationExclusion limits on tanβ in MSSM mmod+

h benchmark scenario

[GeV]Am

100 150 200 250 300 350 400 450 500

βta

n

10

20

30

40

50

60 (7 TeV)-1 (8 TeV) + 4.9 fb-1CMS, 19.7 fb

95% CL limitExpected

expectedσ1± expectedσ2±

Observed

scenariohmod+m = +200 GeVµ

3 GeV± 125≠ h,Hm

[GeV]µ-500 -400 -300 -200 -100 0 100 200 300 400 500

βta

n

10

20

30

40

50

60 (7 TeV)-1 (8 TeV) + 4.9 fb-1CMS, 19.7 fb

95% CL limit = 200 GeVAmExpected = 350 GeVAm

Observed = 500 GeVAm

scenariohmod+m

Upper limits on tanβ from 14–50

Also dependence on Higgsino-mass parameter µ studiedI Good sensitivity expected in this channel [Eur. Phys. J. C73 (2013) 2552]



http://dx.doi.org/10.1007//10.1140/epjc/s10052-013-2552-1

MSSM Φ→ µµ Search CMS-PAS-HIG-13-024 (submitted to Phys. Lett. B)

NEW Φ→ µµ Search at CMS

Very low expected BBut excellent mass resolution

I ∆m = 1.2 GeV at 125 GeV

Analytic signal+bkg model

Eve

nts

/ 2 G

eV

0

50

100

= 30β = 150 GeV tan Am

(8 TeV)-119.3 fbCMS Simulation

(GeV)-µ+µm100 150 200 250 300

Pul

l

2−1−012

SM-like h

enhanced H+A

tanβ = 30

Similar search by ATLAS using 7 TeV dataJ. High Energy Phys. 02 (2013) 095

(GeV)-µ+µm

210 310

Eve

nts

/ 2

GeV

-110

1

10

210

310

410

510

610

710 Data, no b tag

tt-W+W

Z±WZZDrell-Yan

=30β=150 GeV, tanA

Signal, m

(8 TeV)-119.3 fbCMS

Peak search in mµµ distributionI Dominant bkg contribution

from Drell-Yan production

Data well-described bybackground-only model




MSSM Φ→ µµ Search CMS-PAS-HIG-13-024 (submitted to Phys. Lett. B)

MSSM InterpretationExclusion limits on tanβ in MSSM mmod+

h benchmark scenario

[GeV]Am

100 150 200 250 300 350 400 450 500

βta

n

10

20

30

40

50

60 (7 TeV)-1 (8 TeV) + 4.9-5.1 fb-1CMS (unpublished), 19.3-19.7 fb

95% CL limitExpectedObserved

bb→φ-µ+µ→φ

-τ+τ→φ

scenariohmod+m = +200 GeVµ

CM

S-P

AS

-HIG

-14

-01

7(su

pp

lemen

tal

ma

terial)

A→ Z + h

==

==

H±

sear

ches

==

==

next presentation

by Pietro Vischia

Results from different channels complementing each otherI Different mass resolution clearly visible (best for µµ, worst for ττ)I Most stringent limits from ττ channel, bb and µµ similar to each other



http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-14-017/index.html

NMSSM h(125)→ aa→ µµττ Search arXiv:1505.01609 (submitted to Phys. Rev. D)

NEW NMSSM h(125)→ aa→ µµττ Search at ATLAS

Low expected B(a→ µµ)

But high trigger efficiency andnarrow di-µ resonance

Peak search in mµµ distributionfrom 3.7–50 GeV

Analytic signal + bkg modelI AssumingB(a→ µµ) + B(a→ ττ) = 1 [GeV]µµm

3 3.5 4 4.5 5 5.5

% R

esid

ual

100

0

100~~

Eve

nt

/ 5

0 M

eV

1

10

210

Event

/ 50 M

eV

50

100

150

200

250

300

350

Signal MC

Best Fit

Syst.σ 1±Fit

= 125 GeVh = mH

= 5 GeV, ma

, mµSR

ATLAS Simulation

= 8 TeVs

ma = 5 GeV



NMSSM h(125)→ aa→ µµττ Search arXiv:1505.01609 (submitted to Phys. Rev. D)

Results

Eve

nts

/ 200

MeV

[GeV]µµm4 5 6 7 8 910 20 30 40 50 60%

Res

idua

l

-1000

100

5

10

15

ATLAS-1 = 8 TeV, 20.3 fbs

µSR Data

Background Model

Fit Uncertainty

* ComponentγZ/

Componenttt

*γZ/

tt

Other

aa) = 10 %BR(h

[GeV]am4 5 6 7 8 9 10 20 30 40

2 )ττ→

BR

(a×

aa)

→

BR

(h×

SM

σ h

)→

(gg

σ

-210

-110

1

10

210 = 125 GeVh = mHmObserved 95% CLMedian Expected 95% CL

σ 1 ± σ 2 ±

ATLAS-1 = 8 TeV, 20.3 fbs

Data well-described by background-only modelI J/Ψ,Ψ′,Υ1S ,Υ2S ,Υ3S ,Z resonances + tt + Drell-Yan continuum

Exclusion limit on σ(gg → h)× B(h→ aa)I Relative to SM gluon-gluon-fusion Higgs-boson production



NMSSM h(125)→ aa→ 4γ Search ATLAS EXOT-2013-24

NEW NMSSM h(125)→ aa→ 4γ Search at ATLAS

Events with ≥ 3 identifiedphotons

Peak search in mγ2γ3 distribution

mh = 125 GeV

Exclusion limit on σ/σSM(gg → h)× B(h→ aa)× B2(a→ γγ)

Additional H→ aa interpretation


Summary & Outlook

Are there any further Higgs bosons?

Many complementary searcheswith LHC Run-I data

Both model-independent limits andmodel-dependent interpretations

Significantly improved constraints on‘BSM-Higgs parameter space’, e. g.

I closing low mA-region in MSSM

?

−→ We don’t know yet. . .

. . . but 13 TeV data aheadWe might know soon!

[GeV]φm100 200 300 400 1000

[p

b]

)ττ→φ(

B⋅)φ(g

gσ

95%

CL

lim

it o

n

-410

-310

-210

-110

1

10

210

310

ττ→φ Projection CMS

Expected 13TeV, 300/fb

Expectedσ 1±

Expectedσ 2±

arXiv:1408.3316 expected

(8 TeV scaled to 13 TeV, 20/fb)

=125 GeV, 13 TeV)H

(mSM h→gg

13 TeV

J.H

igh

En

ergy

Ph

ys.1

0(2

01

4)

16

0

(sup

plem

enta

lm

ateria

l)


https://twiki.cern.ch/twiki/bin/view/CMSPublic/Hig13021PaperTwiki#ggH_bbH_cross_section_time_B_AN2


Summary & Outlook

Are there any further Higgs bosons?

Many complementary searcheswith LHC Run-I data

Both model-independent limits andmodel-dependent interpretations

Significantly improved constraints on‘BSM-Higgs parameter space’, e. g.

I closing low mA-region in MSSM

?

−→ We don’t know yet. . .

. . . but 13 TeV data aheadWe might know soon!

[GeV]φm100 200 300 400 1000

[p

b]

)ττ→φ(

B⋅)φ(g

gσ

95%

CL

limit

on

-410

-310

-210

-110

1

10

210

310

ττ→φ Projection CMS

Expected 13TeV, 300/fb

Expectedσ 1±

Expectedσ 2±

arXiv:1408.3316 expected

(8 TeV scaled to 13 TeV, 20/fb)

=125 GeV, 13 TeV)H

(mSM h→gg

13 TeV

J.H

igh

En

ergy

Ph

ys.1

0(2

01

4)

16

0

(sup

plem

enta

lm

ateria

l)




Additional Material

Additional Material


Additional Material MSSM

Neutral MSSM Higgs-Boson Masses in mmaxh Scenario

CMS-PAS-HIG-12-011

]2[GeV/c0Am100 150 200 250 300 350

]2

[GeV/c

0/H

0h

m

100

150

200

250

300

350

±Hm

= 10)β (tanhm

= 50)β (tanhm

= 20)β (tan

hm

= 10)

β (t

an

Hm

= 20)

β (t

an

Hm

= 50)

β (t

an

Hm

-scenariomaxhMSSM m


Additional Material 2HDM

Types of 2HDM

Branco et al. Theory and phenomenology of two-Higgs-doublet models, Physics Reports 516 (2012) 1-102


http://dx.doi.org/10.1016/j.physrep.2012.02.002

Additional Material A→ Z + h(125)

A→ Z + h: Model-Independent Interpretation

Phys. Lett. B 744 (2015) 163-183

[GeV]A m

200 300 400 500 600 700 800 900 1000

) [p

b]ττ

→B

R(h

×Z

h)→

BR

(A×σ

-210

-110

1

Comb obs 95% CL limit

Comb exp 95% CL limit

bandσ 1±

bandσ 2±

exp 95% CL limithadτhadτ

exp 95% CL limithadτlepτ

exp 95% CL limitlepτlepτ

ATLAS

= 8 TeVs-120.3 fb

[GeV]A m

200 300 400 500 600 700 800 900 1000)

[pb]

b b

→B

R(h

×Z

h)→

BR

(A×σ

-210

-110

1

10

Comb obs 95% CL limit

Comb exp 95% CL limit

bandσ 1±

bandσ 2±

llbb exp 95% CL limit

bb exp 95% CL limitνν

ATLAS

= 8 TeVs-120.3 fb




A→ Z + h: Model-Independent Interpretation

Phys. Lett. B 748 (2015) 221

[GeV]Am250 300 350 400 450 500 550 600

) [fb

]b

ℓℓb

→ Z

h →

B(A

Aσ

0.81

2

10

20

3040506070

Low Intermediate High mass region

95% CL limitsObservedExpected


(8 TeV)-1L = 19.7 fb

CMS

b ℓℓb→ Zh →A

[GeV]AΓ0 5 10 15 20 25 30 35 40

) [fb

]b

ℓℓb

→ Z

h →

B(A

Aσ

0.81

2

10

20

3040506070

95% CL limitsObservedExpected


(8 TeV)-1L = 19.7 fb

CMS

b ℓℓb→ Zh →A

= 500 GeVAm




A→ Z + h: 2HDM Interpretation

Phys. Lett. B 744 (2015) 163-183

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ATLAS = 8 TeVs

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-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

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ATLAS = 8 TeVs

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=300 GeVAZh m→A2HDM Lepton-specific


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-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

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)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

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210

ATLAS = 8 TeVs

-120.3 fb

=300 GeVAZh m→A2HDM Flipped


)α-βcos(

-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

210




A→ Z + h: 2HDM Interpretation

Phys. Lett. B 748 (2015) 221

)αβcos(-1 -0.5 0 0.5 1

βta

n

-110

1

10

Type-I 2HDM

bℓℓb→Zh→A

= 300 GeVAm

(8 TeV)-1L = 19.7 fb

CMS 95% CL limitsObservedExcluded regionExpected


–

– )αβcos(-1 -0.5 0 0.5 1

βta

n

-110

1

10

Type-II 2HDM

bℓℓb→Zh→A

= 300 GeVAm

(8 TeV)-1L = 19.7 fb

CMS

95% CL limitsObservedExcluded regionExpected


–



Additional Material H/A→ Z + A/H

H/A→ Z + A/H: 2HDM Interpretation

CMS-PAS-HIG-15-001

Z→ bb channel

(GeV)AM0 200 400 600 800 1000

(G

eV)

HM

0

100

200

300

400

500

600

700

800

900

1000

TH

σ /

95%

σ =

µ

Obs

erve

d

-110

1

10

210

310

410


2HDM type-II) = 0.01α - β) = 1.5 ; cos(βtan(

ZA→H

ZH

→A

)

= 0.

01α

-

β)

= 1.

5 ;

cos(

βta

n(

2HD

M t

ype-

II

Kinem

atic

ally

forb

idden

Exp. Excl.Obs. Excl.

Z→ ττ channel (shape analysis)

(GeV)AM0 200 400 600 800 1000

(G

eV)

HM

0

100

200

300

400

500

600

700

800

900


TH

σ/95

%σ

=

µO

bser

ved

-110

1

10

210

310

410

510

Exp. Excl.σ 1±Obs. Excl.

Kinem

atic

ally

forb

idden

ZA→H

ZH

→A

) = 0.01α - β) = 1.5 ; cos(βtan(2HDM type-II

) =

0.01

α -

β

) =

1.5

; co

s(β

tan

(2H

DM

typ

e-II



Additional Material H/A→ Z + A/H

H/A→ Z + A/H: 2HDM Interpretation

CMS-PAS-HIG-15-001

Z→ bb channel

)α-βcos(-1 -0.5 0 0.5 1

βta

n

-110

1



2HDM type-II

Obs. Excl.Exp. Excl.

1-sigma

2-sigma

Z→ ττ channel (shape analysis)

)α-βcos(-1 -0.5 0 0.5 1

βta

n

-110

1


2HDM type-IIττ ll→ ZA→H


Obs. Excl.

Exp. Excl.

1-sigma

2-sigma



Additional Material H→ ZZ

Search for Heavy H→ ZZ at ATLASarXiv:1507.05930 (submitted to Eur. Phys. J.)

4 channels: llll, llνν, llqq, qqνν

[GeV]Hm

200 300 400 500 600 700 800 9001000

ZZ

)[pb

]→

BR

(H×

ggF

σ95

% li

mit

on

-210

-110

1

10

expectedllll

expectedqqννllqq+ expectedννll

Combined expected

Combined observedσ1±σ2±


ggF

qqνν+llqq+ννllll+ll→ZZ→H

[GeV]Hm

200 300 400 500 600 700 800 9001000

ZZ

)[pb

]→

BR

(H×

VB

Fσ

95%

lim

it on

-210

-110

1

10

expectedllll

expectedqqννllqq+ expectedννll

Combined expected

Combined observedσ1±σ2±


VBF

qqνν+llqq+ννllll+ll→ZZ→H



Additional Material H→ ZZ

Search for Heavy H→ ZZ: 2HDM Interpretation

arXiv:1507.05930 (submitted to Eur. Phys. J.)

)α-βcos (-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

10

ATLAS

= 8 TeVs-120.3 fb

=200 GeVH

ZZ, m→H2HDM Type I

Obs 95% CL limit bandσ1±Exp 95% CL limit bandσ2±Excluded

)α-βcos (-0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8

βta

n

1

ATLAS

= 8 TeVs-120.3 fb

=200 GeVH

ZZ, m→H2HDM Type II

Obs 95% CL limit bandσ1±Exp 95% CL limit bandσ2±Excluded



Additional Material Φ→ ττ

mττ Reconstruction at CMS

[GeV]vism0 50 100 150 200 250 300

[1/

GeV

]vi

sd

N/d

m

0

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0.16

0.18

0.2ττ →Z



[GeV]ττm0 50 100 150 200 250 300 350 400 450

[1/

GeV

]ττ

dN

/dm

0

0.05

0.1

0.15

0.2

0.25ττ →Z





Updated Φ→ ττ Search at CMS

CMS-PAS-HIG-14-029

Channels: µµ, eµ, eτh, µτh, τhτh

Refinements over earlier results

1) MVA-based identification ofboosted τh

I Combines isolation and lifetimeinformation

I 40–50% reduction of fake rate

2) Further event categorizationI Depends on pT(τh)

[GeV]φm100 200 300 400 1000

BR

[p

b]

×)φ→

(gg

σ95

% C

L li

mit

on

-210

-110

1

10

210

310

φgg

(8 TeV)-1 19.7 fbττ→φ Preliminary CMSexpected

HIG-13-021HIG-14-029

OLD

NEW

20–50% improvement in expected sensitivity for most mass points




Φ→ ττ : Model-Independent Results

J. High Energy Phys. 11 (2014) 056

[GeV]φm100 200 300 400 500 600 700 800 900 1000

) [p

b]ττ

→ φ B

R(

× σ

-310

-210

-110

1

10

210

310-1

L dt = 19.5 - 20.3 fb∫=8 TeV, sATLAS

gluon fusion ττ → φ


σ1 σ2

[GeV]φm100 200 300 400 500 600 700 800 900 1000

) [p

b]ττ

→ φ B

R(

× σ-310

-210

-110

1

10

210

310-1

L dt = 19.5 - 20.3 fb∫=8 TeV, sATLAS

b-associated production ττ → φ


σ1 σ2




Φ→ ττ : Model-Independent Results

CMS-PAS-HIG-14-029

[GeV]φm100 200 300 400 1000

[p

b]

)ττ→φ(

B⋅)φ(g

gσ

95%

CL

lim

it o

n

-310

-210

-110

1

10

210

310

φgg

ObservedExpected

Expectedσ 1± Expectedσ 2±

(8 TeV)-1 19.7 fbττ→φ Preliminary CMS

[GeV]φm100 200 300 400 1000

[p

b]

)ττ→φ(

B⋅)φ(b

bσ

95%

CL

lim

it o

n

-310

-210

-110

1

10

210

310

φbb

ObservedExpected

Expectedσ 1± Expectedσ 2±

(8 TeV)-1 19.7 fbττ→φ Preliminary CMS




Φ→ ττ : Sensitivity of Different Channels

J. High Energy Phys. 11 (2014) 056

[GeV]Am100 200 300 400 500 600 700 800 900 1000

βta

n

10

20

30

40

50

60

70

80

hadτlepτ

hadτhadτ

lepτlepτ

-1 L dt = 19.5 - 20.3 fb∫=8 TeV, sATLAS

ττ → = 1 TeV, h/H/ASUSY

scenario, MmaxhMSSM m

95% CL limit



Additional Material Φ→ bb

Φ→ bb: Event-B-Tag Definition

CMS-PAS-HIG-14-017 (submitted to J. High Energy Phys.)

M12 templates similar for different flavour combinations

Additional separation by SV-mass information as 2nd dimension

sum of SV masses [GeV]

0 2 4 6 8

a.u.

0.0

0.1

0.2

0.3

0.4

0.5

= 0

jB

= 1

jB

= 2

jB

= 3

jB

udsg jetsc1 jetsc2 jetsb1 jetsb2 jets

(8 TeV)-1CMS (unpublished), 19.7 fb

> 0.898CSV

d

∑SV-masses (SVMS) per jet

Combined into event-b-tag X123

X123 = T12 + T3

T12 = 0 if B1 + B2 ≤ 1T12 = 1 if 2 ≤ B1 + B2 ≤ 3T12 = 2 if B1 + B2 ≥ 4

T3 = 0 if B3 ≤ 1T3 = 3 if B3 = 2T3 = 6 if B3 = 3

→ 9 different values by construction




Φ→ bb: Background-Only Fit (Unrolled Bins)


Eve

nts

0

500

1000

1500

2000

2500

3000

3500

4000

4500 = 0123X = 1123X = 2123X = 3123X = 4123X = 5123X

= 6123X = 7123X = 8123X

Data(B2+B1+C2,b)b(C1,b)b(Q,b)bbb(B2+B1+C2)bb(C1+Q)Pre-fit bin-by-bin uncertaintyTotal post-fit uncertainty

= 30)β= 350 GeV, tanA

(mφ bb×10


Bin in maximum-likelihood fit

0 20 40 60 80 100 120 140 160 180 200

Dat

a/B

kg

0.91.01.1




Φ→ bb: Signal+Background Fit (Unrolled Bins)


Eve

nts

0

500

1000

1500

2000

2500

3000

3500

4000

4500 = 0123X = 1123X = 2123X = 3123X = 4123X = 5123X

= 6123X = 7123X = 8123X

Data(350 GeV)φbb

(B2+B1+C2,b)b(C1,b)b(Q,b)bbb(B2+B1+C2)bb(C1+Q)Pre-fit bin-by-bin uncertaintyTotal post-fit uncertainty


Bin in maximum-likelihood fit

0 20 40 60 80 100 120 140 160 180 200

Dat

a/B

kg

0.91.01.1




Φ→ bb: Model-Independent Interpretation


[GeV]φm

100 200 300 400 500 600 700 800 900

) [p

b]bb

→φ(B ×

+X

) φb

→(p

pσ

1

10

210

310 (8 TeV)-1CMS, 19.7 fb

95% CL limitExpected

expectedσ1± expectedσ2±

Observed



Additional Material Φ→ µµ

Φ→ µµ: Signal & Background Models

CMS-PAS-HIG-13-024 (submitted to Phys. Lett. B)

Eve

nts

/ 2 G

eV

0

50

100

= 30β = 150 GeV tan Am

(8 TeV)-119.3 fbCMS Simulation

(GeV)-µ+µm100 150 200 250 300

Pul

l

2−1−012

Eve

nts

/ 2 G

eV

210

310

410no b tag

(8 TeV)-119.3 fbCMS

(GeV)-µ+µm100 150 200 250 300

Pul

l4−2−024




Φ→ µµ: MSSM Interpretation


(GeV)Am150 200 250 300

βta

n

0

10

20

30

40

50

60

- 95% CL upper limithmod+m

σ 2±Expected limit


Expected limit

Observed limit

(7 TeV)-1 (8 TeV) + 5.1 fb-119.3 fbCMS

(GeV)Am150 200 250 300

β ta

n∆

2−

0

2

4

6

hmaxm

hmod-m

light stop

light stau

(7 TeV)-1 (8 TeV) + 5.1 fb-119.3 fbCMS




Φ→ µµ: Model-Independent Results


(GeV)φm200 300 400 500

(fb

)B ⋅ σ

95%

CL

uppe

r lim

it on

1

10

210

310



Expected limit

Observed limit

φbb→gg-µ+µ→φ

(7 TeV)-1 (8 TeV) + 5.1 fb-119.3 fbCMS

(GeV)φm200 300 400 500

(fb

)B ⋅ σ

95%

CL

uppe

r lim

it on

1

10

210

310



Expected limit

Observed limit

φ→gg-µ+µ→φ

(7 TeV)-1 (8 TeV) + 5.1 fb-119.3 fbCMS



Additional Material h(125)→ aa→ µµττ

H→ a(5)a(5)→ µµττ Interpretation

arXiv:1505.01609 (submitted to Phys. Rev. D)

[GeV]Hm100 150 200 250 300 350 400 450 500

[pb]

2 )τ

τ→

BR

(a×

aa)

→ B

R(H

× H

) →

(gg

σ

110

1

10

210 = 5 GeVam

Observed 95% CL

Median Expected 95% CL

σ 1 ±

σ 2 ±

H→SM gg

ATLAS1 = 8 TeV, 20.3 fbs

Assuming mh = 125 GeV and ma = 5 GeV



Searches for Neutral 2HDM, MSSM and NMSSM Higgs Bosons at...

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