Extra Higgses at LHC: Extra Higgses at LHC: EW Road to Baryogenesis - - PowerPoint PPT Presentation
Extra Higgses at LHC: Extra Higgses at LHC: EW Road to Baryogenesis The EW Road to Baryogenesis The Jose Miguel No (Sussex U.) Jose Miguel No 1310.6035 (PRD) with M. Ramsey-Musolf. 1305.6610 (JHEP), 1405.5537 (PRL), with G. Dorsch, S. Huber, K.
1310.6035 (PRD) with M. Ramsey-Musolf. 1305.6610 (JHEP), 1405.5537 (PRL), with G. Dorsch, S. Huber, K. Mimasu.
+ Work in Progress
Jose Miguel No Jose Miguel No (Sussex U.)
Liverpool, March 2015
1
What is the Origin of the Baryon Asymmetry? What is the Origin of the Baryon Asymmetry?
(from BBN) (from BBN)
1
What is the Origin of the Baryon Asymmetry? What is the Origin of the Baryon Asymmetry?
Baryogenesis at EW Scale Baryogenesis at EW Scale ... ...
(from BBN) (from BBN)
Possible Explanations... Possible Explanations...
TESTABLE! TESTABLE!
1
What is the Origin of the Baryon Asymmetry? What is the Origin of the Baryon Asymmetry?
Baryogenesis at EW Scale Baryogenesis at EW Scale ... ...
(from BBN) (from BBN)
Possible Explanations... Possible Explanations...
TESTABLE! TESTABLE!
Sakharov Conditions Sakharov Conditions B B Violation Violation C C/ /CP CP Violation Violation Departure from Thermal Equilibrium Departure from Thermal Equilibrium
( (for dynamical generation for dynamical generation
)
1
What is the Origin of the Baryon Asymmetry? What is the Origin of the Baryon Asymmetry?
Baryogenesis at EW Scale Baryogenesis at EW Scale ... ...
(from BBN) (from BBN)
Possible Explanations... Possible Explanations...
TESTABLE! TESTABLE!
Sakharov Conditions Sakharov Conditions B B Violation Violation C C/ /CP CP Violation Violation Departure from Thermal Equilibrium Departure from Thermal Equilibrium
( (for dynamical generation for dynamical generation
)
✓ ✓
✗ ✗ ✗ ✗
Sphalerons Sphalerons
not enough not enough not enough not enough
SM SM
1
What is the Origin of the Baryon Asymmetry? What is the Origin of the Baryon Asymmetry?
Baryogenesis at EW Scale Baryogenesis at EW Scale ... ...
(from BBN) (from BBN)
Possible Explanations... Possible Explanations...
TESTABLE! TESTABLE!
Sakharov Conditions Sakharov Conditions B B Violation Violation C C/ /CP CP Violation Violation Departure from Thermal Equilibrium Departure from Thermal Equilibrium
( (for dynamical generation for dynamical generation
)
✓ ✓ Sphalerons
Sphalerons
BSM BSM
? ? ? ?
New CP Sources New CP Sources First Order EW Phase Transition: First Order EW Phase Transition: New Bosons at EW Scale New Bosons at EW Scale
EDMs LHC
1
What is the Origin of the Baryon Asymmetry? What is the Origin of the Baryon Asymmetry?
Baryogenesis at EW Scale Baryogenesis at EW Scale ... ...
(from BBN) (from BBN)
Possible Explanations... Possible Explanations...
TESTABLE! TESTABLE!
Sakharov Conditions Sakharov Conditions B B Violation Violation C C/ /CP CP Violation Violation Departure from Thermal Equilibrium Departure from Thermal Equilibrium
( (for dynamical generation for dynamical generation
)
✓ ✓ Sphalerons
Sphalerons
? ? ? ?
New CP Sources New CP Sources First Order EW Phase Transition: First Order EW Phase Transition: New Bosons at EW Scale New Bosons at EW Scale
EDMs LHC
LHC Signatures Revealing 1st Order EW Phase Transition
(LHC Road to Baryogenesis)
2
1st Order:
〈〉 = 0 〈〉 = (T) Discontinuous
2nd Order:
〈〉 = 0 〈〉 = (T) Continuous
Universe Expands Adiabatically Universe Expands Adiabatically Equilibrium Thermal Field Theory Equilibrium Thermal Field Theory
Finite-T Effective Potential V(,T) for the Higgs
V(,T) ≈ (a T2 - 2) 2 - b T 3 + 4
EW Symmetry EW Symmetry Restoration Restoration (T>>v) (T>>v)
2
1st Order:
〈〉 = 0 〈〉 = (T) Discontinuous
2nd Order:
〈〉 = 0 〈〉 = (T) Continuous
Universe Expands Adiabatically Universe Expands Adiabatically Equilibrium Thermal Field Theory Equilibrium Thermal Field Theory
Finite-T Effective Potential V(,T) for the Higgs
V(,T) ≈ (a T2 - 2) 2 - b T 3 + 4
New Bosons Larger mh
In the SM ( In the SM (m mh
h
= 125 GeV = 125 GeV) ) EW Phase Transition Smooth CrossOver EW Phase Transition Smooth CrossOver
2
1st Order:
〈〉 = 0 〈〉 = (T) Discontinuous
Universe Expands Adiabatically Universe Expands Adiabatically Equilibrium Thermal Field Theory Equilibrium Thermal Field Theory
Finite-T Effective Potential V(,T) for the Higgs
Nucleation of True Vacuum Bubbles (in False Vacuum Sea)
Sudden Change in Higgs VEV Sudden Change in Higgs VEV
3
Baryogenesis Baryogenesis
The EW Baryogenesis Recipe: The EW Baryogenesis Recipe:
3
Baryogenesis Baryogenesis
The EW Baryogenesis Recipe: The EW Baryogenesis Recipe: CP Violation + Transport (diffusion)
3
Baryogenesis Baryogenesis
The EW Baryogenesis Recipe: The EW Baryogenesis Recipe: ➋ Baryon Number Violation
S
Sph 5
WTN
4 Unsuppressed
3
Baryogenesis Baryogenesis
The EW Baryogenesis Recipe: The EW Baryogenesis Recipe: ➌ Out of Equilibrium
b
Sph
Exp(-ESph/TN) Suppressed
(if 〈〉/T 1)
Sudden Change in Higgs VEV Needed for EWBG!
4
EW Scale Baryogenesis Needs:
New Bosons (
New Bosons (EW Scale) EW Scale)
Coupled to SM Higgs
Coupled to SM Higgs
Strong 1 Strong 1st
st Order
Order EW Phase Transition EW Phase Transition
4
EW Scale Baryogenesis Needs:
Simple Extensions of the SM
Archetype Scenario: Archetype Scenario: Extended Higgs Sectors Extended Higgs Sectors
New Bosons (
New Bosons (EW Scale) EW Scale)
Coupled to SM Higgs
Coupled to SM Higgs
Strong 1 Strong 1st
st Order
Order EW Phase Transition EW Phase Transition
Provide Missing Ingredients for EW Baryogenesis
M M
r e e H H i i g g g g s s e e s s ! ! M M
r e e H H i i g g g g s s e e s s ! !
I will discuss two well-motivated scenarios: I will discuss two well-motivated scenarios:
(Singlet) Higgs Portal
Higgs Portal Goal: LHC signals of EW Phase Transition LHC signals of EW Phase Transition
5
… … A
Add a Second Scalar Doublet to the SM dd a Second Scalar Doublet to the SM
ℤ ℤ2
2
Symmetric Symmetric (softly broken) (softly broken)
5
… … A
Add a Second Scalar Doublet to the SM dd a Second Scalar Doublet to the SM
ℤ ℤ2
2
Symmetric Symmetric (softly broken) (softly broken)
Provides ALL Needed Ingredients for EW Baryogenesis Provides ALL Needed Ingredients for EW Baryogenesis ( (CP Violation) )
( (For Simplicity, we do not consider CP Violation here For Simplicity, we do not consider CP Violation here) )
5
… … A
Add a Second Scalar Doublet to the SM dd a Second Scalar Doublet to the SM
Provides ALL Needed Ingredients for EW Baryogenesis Provides ALL Needed Ingredients for EW Baryogenesis ( (CP Violation) )
( (For Simplicity, we do not consider CP Violation here For Simplicity, we do not consider CP Violation here) )
New Heavy Scalars “ ” New Heavy Scalars “ ” (CP-Even), (CP-Odd) (CP-Even), (CP-Odd) and and
6 New Parameters 6 New Parameters
5
… … A
Add a Second Scalar Doublet to the SM dd a Second Scalar Doublet to the SM
Provides ALL Needed Ingredients for EW Baryogenesis Provides ALL Needed Ingredients for EW Baryogenesis ( (CP Violation) )
( (For Simplicity, we do not consider CP Violation here For Simplicity, we do not consider CP Violation here) )
New Heavy Scalars “ ” New Heavy Scalars “ ” (CP-Even), (CP-Odd) (CP-Even), (CP-Odd) and and
6 New Parameters 6 New Parameters
=
= light Higgs h is SM-like (Differs from Usual 2HDM Definition by ) Attention! Attention!
5
… … A
Add a Second Scalar Doublet to the SM dd a Second Scalar Doublet to the SM
Provides ALL Needed Ingredients for EW Baryogenesis Provides ALL Needed Ingredients for EW Baryogenesis ( (CP Violation) )
( (For Simplicity, we do not consider CP Violation here For Simplicity, we do not consider CP Violation here) )
New Heavy Scalars “ ” New Heavy Scalars “ ” (CP-Even), (CP-Odd) (CP-Even), (CP-Odd) and and
6 New Parameters 6 New Parameters
We Focus on Type I 2HDM We Focus on Type I 2HDM (all fermions coupled to same scalar doublet)
(all fermions coupled to same scalar doublet)
EW Phase Transition
EW Phase Transition DOES NOT DOES NOT depend on the Type depend on the Type
Experimental constraints
Experimental constraints DO DO depend on the Type depend on the Type
We We Scan Scan
Stability of the Effective Potential at 1-loop
Stability of the Effective Potential at 1-loop
Selects Points Satisfying: Selects Points Satisfying:
Unitarity, Perturbativity, EWPO, LEP/Tevatron/LHC Bounds
Impose Flavour Constraints (
Impose Flavour Constraints (
mainly
mainly b
b s s γ γ )
)
Code interfaced to 2HDMC & HiggsBounds
Code interfaced to 2HDMC & HiggsBounds
P . Bechtle, O. Brein, S. Heinemeyer, G. Weiglein, K. Williams, Comput. Phys. Commun. 181 (2010) 138 F . Mahmoudi, O. Stal, Phys. Rev D 81 (2010) 035016
Global Fit to light Higgs Properties
Global Fit to light Higgs Properties
Constraints on and tan Points satisfying all above constraints are “Physical” “Physical”
6
We We Scan Scan
Stability of the Effective Potential at 1-loop
Stability of the Effective Potential at 1-loop
Selects Points Satisfying: Selects Points Satisfying:
Unitarity, Perturbativity, EWPO, LEP/Tevatron/LHC Bounds
Impose Flavour Constraints (
Impose Flavour Constraints (
mainly
mainly b
b s s γ γ )
)
Code interfaced to 2HDMC & HiggsBounds
Code interfaced to 2HDMC & HiggsBounds
P . Bechtle, O. Brein, S. Heinemeyer, G. Weiglein, K. Williams, Comput. Phys. Commun. 181 (2010) 138 F . Mahmoudi, O. Stal, Phys. Rev D 81 (2010) 035016
Global Fit to light Higgs Properties
Global Fit to light Higgs Properties
Constraints on and tan Points satisfying all above constraints are “Physical” “Physical”
Strength of the EW Phase Transition Strength of the EW Phase Transition: :
Use Daisy Resummed 1-loop Thermal Effective Potential
Use Daisy Resummed 1-loop Thermal Effective Potential
Critical Temperature
Critical Temperature T
TC
C
vC/ TC > 1
Strongly First Order Strongly First Order EW Phase Transition EW Phase Transition
6
7
Strong EW Phase Transition Strong EW Phase Transition vs vs “Physical” “Physical”
SM-like light Higgs SM-like light Higgs h h
(Small - and tan ≿ 1)
GeV
( (& & GeV) )
7
Strong EW Phase Transition Strong EW Phase Transition vs vs “Physical” “Physical”
SM-like light Higgs SM-like light Higgs h h
(Small - and tan ≿ 1)
GeV
( (& & GeV) )
1 1st
st Order EW Phase Transition Leads to
Order EW Phase Transition Leads to very different 2HDM than usually considered very different 2HDM than usually considered ( (MSSM-like MSSM-like) )
7
Strong EW Phase Transition Strong EW Phase Transition vs vs “Physical” “Physical”
SM-like light Higgs SM-like light Higgs h h
(Small - and tan ≿ 1)
GeV
( (& & GeV) )
Impact on 2HDM Impact on 2HDM Searches at LHC! Searches at LHC!
1 1st
st Order EW Phase Transition Leads to
Order EW Phase Transition Leads to very different 2HDM than usually considered very different 2HDM than usually considered ( (MSSM-like MSSM-like) )
7
Strong EW Phase Transition Strong EW Phase Transition vs vs “Physical” “Physical”
SM-like light Higgs SM-like light Higgs h h
(Small - and tan ≿ 1)
GeV
( (& & GeV) )
Impact on 2HDM Impact on 2HDM Searches at LHC! Searches at LHC!
H H0
0 S
Searches in earches in
VV
VV Channels are Challenging Channels are Challenging
7
Strong EW Phase Transition Strong EW Phase Transition vs vs “Physical” “Physical”
SM-like light Higgs SM-like light Higgs h h
(Small - and tan ≿ 1)
GeV
( (& & GeV) )
Impact on 2HDM Impact on 2HDM Searches at LHC! Searches at LHC!
H H0
0 S
Searches in earches in
VV
VV Channels are Challenging Channels are Challenging New Decay Channels New Decay Channels i
i
V V j
j
(not widely considered;
(not widely considered; Not Accessible in MSSM) Not Accessible in MSSM)
7
Strong EW Phase Transition Strong EW Phase Transition vs vs “Physical” “Physical”
SM-like light Higgs SM-like light Higgs h h
(Small - and tan ≿ 1)
GeV
( (& & GeV) )
Impact on 2HDM Impact on 2HDM Searches at LHC! Searches at LHC!
H H0
0 S
Searches in earches in
VV
VV Channels are Challenging Channels are Challenging H H0 A A0 Z Z New Decay Channels New Decay Channels i
i
V V j
j
(not widely considered;
(not widely considered; Not Accessible in MSSM) Not Accessible in MSSM)
“ “smoking gun signature ” smoking gun signature ”
8
Decay Dominant for
Decay Dominant for
8
Decay Dominant for
Decay Dominant for
supressed by
supressed by
Competing Channels Competing Channels
8
Decay Dominant for
Decay Dominant for
supressed by
supressed by
Competing Channels Competing Channels
. Kling, S. Su, arXiv:1408.4119
depends on
(no preference from strong PT)
8
Decay Dominant for
Decay Dominant for
supressed by
supressed by
Competing Channels Competing Channels
EWPO require or
closed
8
Decay Dominant for
Decay Dominant for
Simple Benchmarks for a Strong EW Phase Transition Simple Benchmarks for a Strong EW Phase Transition::
(controls production)
gg A0 H H0 A A0 Z Z
8
Decay Dominant for
Decay Dominant for
Simple Benchmarks for a Strong EW Phase Transition Simple Benchmarks for a Strong EW Phase Transition::
(controls production)
gg A0
Search Strategy Dictated by Dominant Decay Mode of
Search Strategy Dictated by Dominant Decay Mode of H
H0 H H0 A A0 Z Z A A: :
π = 0.001 π (aligned)
(aligned)
B B: :
π = 0.1 π (non-aligned)
(non-aligned)
0 searches at
H0 tt 0 ( = 200 GeV )
Measurements of light Measurements of light Higgs couplings Higgs couplings H H0 H0 WW 0
9
0 searches at
H0 tt 0 ( = 200 GeV )
Measurements of light Measurements of light Higgs couplings Higgs couplings H H0 H0 WW 0
9
2HDM LHC Searches for a 1 2HDM LHC Searches for a 1st
st Order EW Phase
Order EW Phase Transition Naturally fill the ”Blind Spots“ Transition Naturally fill the ”Blind Spots“
10
LHC Discovery Potential of Benchmark Scenarios LHC Discovery Potential of Benchmark Scenarios
➊ A few words on the Analysis...
Type I 2HDM implemented in FeynRules FeynRules (including gluon-fusion). Signal & relevant backgrounds generated using MadGraph5_aMC@NLO MadGraph5_aMC@NLO. Generated events passed on to Pythia Pythia for Parton Showering and Hadronization and subsequently to Delphes Delphes for detector simulation. “ “Cut & Count analysis on a small set of kinematical variables, to extract signal over ” background. Determined required Integrated Luminosity at 14 TeV to achieve 5 statistical significance via a CLs hypothesis test. Use of NLO flat K-factors for signal (SusHi
SusHi) and dominant backgrounds. Only statistical uncertainties. 10% systematic uncertainty on background.
Also considered current 8 TeV LHC data for
11
( ( - α β = 0.001π) )
Irreducible backgrounds are Analysis at 14 TeV (potential sensitivity already with 7-8 TeV LHC data): Event Selection Event Selection 2 Isolated (within a cone of 0.3), Same-flavour leptons. || < 2.5 (2.7) for electrons (muons) Anti-kT Jets with distance parameter R = 0.6 2 b-tagged Jets with || < 2.5
ATLAS-CONF-2013-079
> 40 GeV, > 20 GeV.
K-factor: 1.6 1.5 1.4
LHC Discovery Potential of Benchmark Scenarios LHC Discovery Potential of Benchmark Scenarios
➋ Benchmark A:
11
( ( - α β = 0.001π) )
Irreducible backgrounds are Analysis at 14 TeV (potential sensitivity already with 7-8 TeV LHC data): Event Selection Event Selection 2 Isolated (within a cone of 0.3), Same-flavour leptons. || < 2.5 (2.7) for electrons (muons) Anti-kT Jets with distance parameter R = 0.6 2 b-tagged Jets with || < 2.5
ATLAS-CONF-2013-079
> 40 GeV, > 20 GeV.
LHC Discovery Potential of Benchmark Scenarios LHC Discovery Potential of Benchmark Scenarios
➋ Benchmark A:
14 TeV LHC, 14 TeV LHC, ℒ = 20 fb = 20 fb-1
Invariant mass windows: 5 signal significance for: ℒ
ℒ = 15 fb = 15 fb-1
ℒ
ℒ = 40 fb = 40 fb-1
(statistics only) (10% systematics)
( ( - α β = 0.1π) )
Most sensitive A
Most sensitive A0
0 search channel away from alignment
search channel away from alignment
also promising Main backg
Main backgrounds are
subdominant
Analysis & Event Selection similar to previous case: 4 Isolated (cone of 0.3) leptons, same-flavour pairs. || < 2.5 (2.7) for electrons (muons) > 40 GeV, > 20 GeV.
12
LHC Discovery Potential of Benchmark Scenarios LHC Discovery Potential of Benchmark Scenarios
➌ Benchmark B:
. Kling, S. Su, JHEP 1409 (2014) 161
( ( - α β = 0.1π) )
Most sensitive A
Most sensitive A0
0 search channel away from alignment
search channel away from alignment
also promising Main backg
Main backgrounds are
subdominant
Analysis & Event Selection similar to previous case: 4 Isolated (cone of 0.3) leptons, same-flavour pairs. || < 2.5 (2.7) for electrons (muons) > 40 GeV, > 20 GeV.
LHC Discovery Potential of Benchmark Scenarios LHC Discovery Potential of Benchmark Scenarios
➌ Benchmark B:
. Kling, S. Su, JHEP 1409 (2014) 161
14 TeV LHC, 14 TeV LHC, ℒ = 60 fb = 60 fb-1
12
1 pair of SF leptons must reconstruct mZ Transverse mass variables: > 260 GeV allows for Signal Extraction
( ( - α β = 0.1π) )
Most sensitive A
Most sensitive A0
0 search channel away from alignment
search channel away from alignment
also promising Main backg
Main backgrounds are
subdominant
Analysis & Event Selection similar to previous case: 4 Isolated (cone of 0.3) leptons, same-flavour pairs. || < 2.5 (2.7) for electrons (muons) > 40 GeV, > 20 GeV.
LHC Discovery Potential of Benchmark Scenarios LHC Discovery Potential of Benchmark Scenarios
➌ Benchmark B:
. Kling, S. Su, JHEP 1409 (2014) 161
14 TeV LHC, 14 TeV LHC, ℒ = 60 fb = 60 fb-1
12
5 signal significance for: ℒ
ℒ = 60 fb = 60 fb-1
ℒ
ℒ = 200 fb = 200 fb-1
(statistics only) (10% systematics)
(conservative (conservative.
.)
)
13
14
. Wilczek, hep-ph/0605188
| |H
H|
|2
2
unique Lorentz & Gauge Invariant term w. d < 4
unique Lorentz & Gauge Invariant term w. d < 4
SM + (Real) Scalar Singlet S
14
. Wilczek, hep-ph/0605188
| |H
H|
|2
2
unique Lorentz & Gauge Invariant term w. d < 4
unique Lorentz & Gauge Invariant term w. d < 4
SM + (Real) Scalar Singlet S Scenarios w. Scalar Singlets can Lead to Scenarios w. Scalar Singlets can Lead to 1 1st
st Order EW Phase Transition
Order EW Phase Transition
. Riva, Nucl. Phys. B854 (2012) 592
Singlet-Doublet Mixing
A Strong A Strong EW Phase Transition EW Phase Transition strongly prefers strongly prefers a
a1
1 < 0 (Mixing)
< 0 (Mixing)
14
. Wilczek, hep-ph/0605188
| |H
H|
|2
2
unique Lorentz & Gauge Invariant term w. d < 4
unique Lorentz & Gauge Invariant term w. d < 4
SM + (Real) Scalar Singlet S Scenarios w. Scalar Singlets can Lead to Scenarios w. Scalar Singlets can Lead to 1 1st
st Order EW Phase Transition
Order EW Phase Transition
. Riva, Nucl. Phys. B854 (2012) 592
Singlet-Doublet Mixing
Decay Channel Decay Channel h h2
2
h
h1
1
h h1
1
Resonant Higgs Pair Production Resonant Higgs Pair Production
@ @LHC LHC
15
Resonant Di-Higgs Production
Resonant Di-Higgs Production
h h2
2
h h1
1
h h1
1
. Wan, J. M. Yang, JHEP 1304 (2013) 134
bb ττ, bb γγ final states
15
Resonant Di-Higgs Production
Resonant Di-Higgs Production
h h2
2
h h1
1
h h1
1
. Wan, J. M. Yang, JHEP 1304 (2013) 134
Probe of the EW Phase Transition
Potential Discovery Mode of h
h2
2 (if h
h2
2
ZZ
ZZ suppressed)
bb ττ, bb γγ final states
15
Resonant Di-Higgs Production
Resonant Di-Higgs Production
h h2
2
h h1
1
h h1
1
. Wan, J. M. Yang, JHEP 1304 (2013) 134
Probe of the EW Phase Transition
Potential Discovery Mode of h
h2
2 (if h
h2
2
ZZ
ZZ suppressed)
bb ττ, bb γγ final states
…
Need to be combined with light Higgs data
Need to be combined with light Higgs data
. Winslow, arXiv:1407.5342
A very interesting search! A very interesting search!
. Winslow, et al, In Preparation
16
p p h2 h1 h1 bb ττ
Classify according to Leptonic/Hadronic Nature of each τ τ-Decay
Main SM Backgrounds
Benchmark Scenarios: Un-Boosted: Un-Boosted: C Cθ
θ 2 2 = 0.66 , m
= 0.66 , m2
2 = 270 GeV ,
= 270 GeV , λ λ211
211 = 325 GeV
= 325 GeV Boosted: Boosted: C Cθ
θ 2 2 = 0.66 , m
= 0.66 , m2
2 = 370 GeV ,
= 370 GeV , λ λ211
211 = 325 GeV
= 325 GeV
Z Z
bb
bb tt tt
17
p p h2 h1 h1 bb ττ
Classify according to Leptonic/Hadronic Nature of each τ τ-Decay
Need to Reconstruct both 125 GeV Higgses mbb
mττ
ττ
but τ but τ-Decay involves missing Energy
Collinear approximation
Collinear approximation
Missing Mass calculator
Missing Mass calculator
(needs boosted Higgs)
. Murat, A. Pranko, A. Safonov, Nucl. Instrum. Meth. A654 (2011) 481
18
p p h2 h1 h1 bb ττ
SemiLeptonic Mode: SemiLeptonic Mode: τ τlep
lepτ
τhad
had
Un-Boosted Un-Boosted S / B ~ 5 L ~ 50 fb-1 Boosted Boosted S / B ~ 5 L ~ 100 fb-1
19
EW Baryogenesis as Motivation EW Baryogenesis as Motivation for BSM Physics Near EW Scale for BSM Physics Near EW Scale
Extended Higgs Sectors: Archetype Scenarios for such a Extended Higgs Sectors: Archetype Scenarios for such a Connection between EW Cosmology and LHC Physics Connection between EW Cosmology and LHC Physics
2HDM 2HDM: :
EW Phase T ransition EW Phase T ransition “Smoking Gun” “Smoking Gun”
Higgs Portal Higgs Portal:
:
These Results Motivate Taking These Results Motivate Taking These Searches Seriously @LHC14 These Searches Seriously @LHC14
Resonant Di-Higgs Production Resonant Di-Higgs Production
20
These Results Motivate Taking These Results Motivate Taking These Searches Seriously @LHC14 These Searches Seriously @LHC14
20
These Results Motivate Taking These Results Motivate Taking These Searches Seriously @LHC14 These Searches Seriously @LHC14
[ATLAS-CONF-2013-079] [ATLAS-CONF-2013-079]
Defines signal regions according to number of leptons, additional jets. Splits them according to the pT of the Z (no mbb requirement). Global fit extracts the background normalisations and signal strength of a 125 GeV SM Higgs. in our signal set by . Signal will populate boosted kinematical region.
Signal will populate boosted kinematical region.
21