higgs and electroweak physics · dark matter connections – higgs and/or ew bosons portals...
TRANSCRIPT
![Page 1: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/1.jpg)
Alexander Belyaev 1
“Higgs and Electroweak Physics”
Higgs and Electroweak Physics[theory summary]
Alexander Belyaev
Southampton University & Rutherford Appleton LAB
WIN2015
June 12, 2015, MPIK Heidelberg
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Alexander Belyaev 2
“Higgs and Electroweak Physics”
Present: impressive success of LHC RUN 1 on the Higgs&EW Physics measurements!
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Alexander Belyaev 3
“Higgs and Electroweak Physics”
Karl Jakobs' talk
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Alexander Belyaev 4
“Higgs and Electroweak Physics”
Present: no deviations from SM ...
![Page 5: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/5.jpg)
Alexander Belyaev 5
“Higgs and Electroweak Physics”
Higgs Boson Discovery has completed the puzzle of the Standard model ...
![Page 6: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/6.jpg)
Alexander Belyaev 6
“Higgs and Electroweak Physics”
But it has raised even more questionsthan the number of answers it has given!
![Page 7: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/7.jpg)
Alexander Belyaev 7
“Higgs and Electroweak Physics”
But it has raised even more questionsthan the number of answers it has given!
The Nature of Higgs Boson?
![Page 8: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/8.jpg)
Alexander Belyaev 8
“Higgs and Electroweak Physics”
But it has raised even more questionsthan the number of answers it has given!
The Nature of Higgs Boson?
Fine-tuningproblem
![Page 9: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/9.jpg)
Alexander Belyaev 9
“Higgs and Electroweak Physics”
But it has raised even more questionsthan the number of answers it has given!
The Nature of Higgs Boson?
Fine-tuningproblem
Dark Matterproblem
![Page 10: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/10.jpg)
Alexander Belyaev 10
“Higgs and Electroweak Physics”
But it has raised even more questionsthan the number of answers it has given!
The Nature of Higgs Boson?
Fine-tuningproblem
Dark Matterproblem
Connection to GUT & couplings
unification
![Page 11: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/11.jpg)
Alexander Belyaev 11
“Higgs and Electroweak Physics”
But it has raised even more questionsthan the number of answers it has given!
The Nature of Higgs Boson?
Fine-tuningproblem
Dark Matterproblem
The origin ofmatter/anti-matter
asymmetry
Connection to GUT & couplings
unification
![Page 12: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/12.jpg)
Alexander Belyaev 12
“Higgs and Electroweak Physics”
The Nature of Higgs Boson?
Fine-tuningproblem
Dark Matterproblem
The origin ofmatter/anti-matter
asymmetry
Connection to GUT & couplings
unification
Higgs boson properties are consistent with main compelling BSM theories, so the pattern we have is just a piece of a much bigger puzzle!
![Page 13: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/13.jpg)
Alexander Belyaev 13
“Higgs and Electroweak Physics”
Beyond the Higgs discovery Higgs properties are amazingly consistent with all main compelling underlying theories (except higgsless ones!)Some parameter space of BSM theories was eventually excluded.
CPNSH workshopCERN 2006-009
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Alexander Belyaev 14
“Higgs and Electroweak Physics”
Beyond the Higgs discovery Higgs properties are amazingly consistent with all main compelling underlying theories (except higgsless ones!)Some parameter space of BSM theories was eventually excluded.
PresentStatus
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Alexander Belyaev 15
“Higgs and Electroweak Physics”
Higgs properties are amazingly consistent with all main compelling underlying theories (except higgsless ones!)Some parameter space of BSM theories was eventually excluded.
fundamental scalar
“regular” Higgs Goldstone boson
TechnicolourSUSY
Models with Higgs boson
UED ADD Twin Higgs
Little Higgs RS
composite scalar
RS CHM
Beyond the Higgs discovery
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Alexander Belyaev 16
“Higgs and Electroweak Physics”
What do we know about BSM?
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Alexander Belyaev 17
“Higgs and Electroweak Physics”
What do we know about BSM?It does exist!
![Page 18: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/18.jpg)
Alexander Belyaev 18
“Higgs and Electroweak Physics”
What do we know about BSM?It does exist!
What do we know about BSM?It does exist!
And Higgs & EW sector is the perfect (may be the best) place to probe it! [see also Alex Pomarol's talk]
![Page 19: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/19.jpg)
Alexander Belyaev 19
“Higgs and Electroweak Physics”
What do we know about BSM?It does exist!
Higgs production cross sections, coupling determination, model-independent analysis (higher-dimensional operators)Higgs widthNew Higgs DecaysLongitudinal Vector Boson scattering (VLVL ), unitarity considerations, new vector and scalar resonancesNew states decaying into Higgs – SUSY, TC, CHMDark Matter Connections – Higgs and/or EW bosons portalsConnection to inflationNeutrino PhysicsFlavour Physics ..........
And Higgs & EW sector is the perfect (may be the best) place to probe it! [see also Alex Pomarol's talk]
![Page 20: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/20.jpg)
Alexander Belyaev 20
“Higgs and Electroweak Physics”
Higgs&EW group at WIN201523 talks, great TH<->EXP dialog, new results!
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Alexander Belyaev 21
“Higgs and Electroweak Physics”
Higgs Couplings measurements/analysis
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Alexander Belyaev 22
“Higgs and Electroweak Physics”
EWPTs and Higgs+TGCconstraints on dim-6 operators
Tevong You Juan González Fraile
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Alexander Belyaev 23
“Higgs and Electroweak Physics”
The role of the change of kinematics
Tevong You
Some operators affect not only the Higgs signal rate but also differential distributions. Taking it into account could significantly increase sensitivity to a new physics!
Juan González Fraile
cW fW
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Alexander Belyaev 24
“Higgs and Electroweak Physics”
EWPTs and Higgs+TGC constraints on dim-6 operators taking into account kinematics
Tevong You
for ci=1 LHC probes ~ 0.5–5 TeV scale range of Λ with Higgs+TGC couplings Taking it into account kinematics does increase sensitivity!
Juan González Fraile
![Page 25: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/25.jpg)
Alexander Belyaev 25
“Higgs and Electroweak Physics”
Indirect constraints on stopsand validity of EFT
Tevong You
below 500 GeV, the EFT breaks down; above 500 GeV EFT provides description with the accuracy better than 10%
Drozd, Ellis,Quevillon,You'15
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Alexander Belyaev 26
“Higgs and Electroweak Physics”
Vector Boson Fusion (VBF) and multi-boson Production
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Alexander Belyaev 27
“Higgs and Electroweak Physics”
VBF sensitivity to Higgs and new physicsMarc Thomas
VBF is more model-independent
VS
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Alexander Belyaev 28
“Higgs and Electroweak Physics”
VBF sensitivity to Higgs and new physicsMarc Thomas
VBF is more model-independent
VS
VBF is sensitive to the lack of cancellation in VLVL scattering amplitude
a x hVV
SM
![Page 29: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/29.jpg)
Alexander Belyaev 29
“Higgs and Electroweak Physics”
VBF sensitivity to Higgs and new physicsMarc Thomas
VBF is more model-independent
VS
VBF is sensitive to the lack of cancellation in VLVL scattering amplitude
a x hVV
SM
for ghVV deviation from SMthe cross section faster increases with energy for larger numbers of final state particles
![Page 30: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/30.jpg)
Alexander Belyaev 30
“Higgs and Electroweak Physics”
VBF sensitivity to Higgs and new physicsMarc Thomas
VBF is more model-independent
VS
VBF is sensitive to the lack of cancellation in VLVL scattering amplitude
a x hVV
SM
for ghVV deviation from SMthe cross section faster increases with energy for larger numbers of final state particles
![Page 31: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/31.jpg)
Alexander Belyaev 31
“Higgs and Electroweak Physics”
VBF at proton-proton levelMarc Thomas
WLWL->WLWL enhancement is hidden under the large transverse “polution” WW->hhh enhancement is impressive, but rates are too low for the LHCTo measure ghVV from WLWL->WLWL one needs suppress WT contribution
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Alexander Belyaev 32
“Higgs and Electroweak Physics”
Results on the VBF sensitivityMarc Thomas
cuts reduce transversely polarised background and make measurement of HVV coupling from VBF viable,providing model-independent way of measuring of HVV coupling
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Alexander Belyaev 33
“Higgs and Electroweak Physics”
Connection to Composite Higgs and Technicolor models
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Alexander Belyaev 34
“Higgs and Electroweak Physics”
Is Technicolor really dead?Mads Frandsen
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Alexander Belyaev 35
“Higgs and Electroweak Physics”
Is Technicolor really dead?Mads FrandsenIf title contains question, then the answer is ...
NO!
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Alexander Belyaev 36
“Higgs and Electroweak Physics”
Mads Frandsen
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Alexander Belyaev 37
“Higgs and Electroweak Physics”
Mads Frandsen
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Alexander Belyaev 38
“Higgs and Electroweak Physics”
Mads Frandsen
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Alexander Belyaev 39
“Higgs and Electroweak Physics”
Mads Frandsen
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Alexander Belyaev 40
“Higgs and Electroweak Physics”
TC Higgs
Higgs as Techni-scalar can be dynamicall light !
Frandsen, Sannino, Foadi (2012)κ
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Alexander Belyaev 41
“Higgs and Electroweak Physics”
TC Higgs vs data
Belyaev, Brown,Foadi,Frandsen (2012)
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Alexander Belyaev 42
“Higgs and Electroweak Physics”
TC Phenomenology
Belyaev,Frandsen,Foadi,Jarvinen, Sannino 2008Hapola, Sannino 11
●Resonances couples to TC Higgs●Resonances couples to W,Z●The search for di-boson signatures is important!●Setting limits on the TC scale willstrongly constrain the lowerlimit on TC-Higgs mass
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Alexander Belyaev 43
“Higgs and Electroweak Physics”
Higgs in SUSY models
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Alexander Belyaev 44
“Higgs and Electroweak Physics”
SUSY reinterpretation of LHC Higgs results Sven Heinemeyer
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Alexander Belyaev 45
“Higgs and Electroweak Physics”
SUSY reinterpretation of LHC Higgs results Sven Heinemeyer
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Alexander Belyaev 46
“Higgs and Electroweak Physics”
SUSY reinterpretation of LHC Higgs results Sven Heinemeyer
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Alexander Belyaev 47
“Higgs and Electroweak Physics”
Fully Covering the MSSM Higgs Sector at the LHC Jeremie Quevillon
Higgs sector is defined effectively at tree-level by tan(β) and MA!
Higgs mass should be used as input!
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Alexander Belyaev 48
“Higgs and Electroweak Physics”
Fully Covering the MSSM Higgs Sector at the LHC Jeremie Quevillon
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Alexander Belyaev 49
“Higgs and Electroweak Physics”
Fully Covering the MSSM Higgs Sector at the LHC Jeremie Quevillon
Note: decays to SUSY particles are absent here!
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Alexander Belyaev 50
“Higgs and Electroweak Physics”
Chances for SUSY-GUT in the LHC EpochMarco Chianese
SU(5) framework
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Alexander Belyaev 51
“Higgs and Electroweak Physics”
Chances for SUSY-GUT in the LHC Epoch
Marco Chianese
The limit is based – on naturalness of λ principles!
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Alexander Belyaev 52
“Higgs and Electroweak Physics”
NMSSM Higgs signatures from stop decays Dilip Ghosh
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Alexander Belyaev 53
“Higgs and Electroweak Physics”
NMSSM Higgs signatures from stop decays Dilip Ghosh
Higgs-jet ID efficiency can be high in the high-PT Higgs region, so Higgs-jet can be generically used for BSM hunting!
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Alexander Belyaev 54
“Higgs and Electroweak Physics”
Higgs connection to Cosmoogy:Dark Matter, Baryogenesis and Inflation
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Alexander Belyaev 55
“Higgs and Electroweak Physics”
Higgs-Dark Matter Connectionand the Scale of New Physics
Michael Scherer
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Alexander Belyaev 56
“Higgs and Electroweak Physics”
Higgs-Dark Matter Connectionand the Scale of New Physics
Michael Scherer
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Alexander Belyaev 57
“Higgs and Electroweak Physics”
Minimal SU(N) VectorDark Matter
Stefano Di Chiara
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Alexander Belyaev 58
“Higgs and Electroweak Physics”
Stefano Di Chiara
H1/H2 mixing
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Alexander Belyaev 59
“Higgs and Electroweak Physics”
The model can be probed and potentially completely excluded at the LHC@13 TeV !
Matthias Mozer
Stefano Di Chiara
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Alexander Belyaev 60
“Higgs and Electroweak Physics”
THE SM VACUUM AND HIGGS INFLATIONJavier Rubio
Interaction with gravity introduc Higher dimensional operatorsWhich change running of λ
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Alexander Belyaev 61
“Higgs and Electroweak Physics”
THE SM VACUUM AND HIGGS INFLATIONJavier Rubio
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Alexander Belyaev 62
“Higgs and Electroweak Physics”
THE SM VACUUM AND HIGGS INFLATIONJavier Rubio
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Alexander Belyaev 63
“Higgs and Electroweak Physics”
Discovering a second Higgs doublet via A0 -> ZH0
and connection to EW baryogenesisGláuber Carvalho Dorsch
very hard in MSSM, but possible in 2HDM
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Alexander Belyaev 64
“Higgs and Electroweak Physics”
Discovering a second Higgs doublet via A0 -> ZH0
and connection to EW baryogenesisGláuber Carvalho Dorsch
very hard in MSSM, but possible in 2HDM
![Page 65: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/65.jpg)
Alexander Belyaev 65
“Higgs and Electroweak Physics”
Gláuber Carvalho Dorsch
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Alexander Belyaev 66
“Higgs and Electroweak Physics”
Gláuber Carvalho Dorsch
Requires sizable MA-MH mass split
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Alexander Belyaev 67
“Higgs and Electroweak Physics”
Gláuber Carvalho Dorsch
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Alexander Belyaev 68
“Higgs and Electroweak Physics”
LHC sensitivity to Higgs width
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Alexander Belyaev 69
“Higgs and Electroweak Physics”
Higgs width and coupling constraints from thehigh-mass H V V process→
Nikolas Kaueralso in talk byJuan González Fraile
Higgs – SM BG interference is the key point for the sensitivity to the Higgs width!
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Alexander Belyaev 70
“Higgs and Electroweak Physics”
Higgs width and coupling constraints from thehigh-mass H V V process→
Nikolas Kauer
Bounds are model-dependent!
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Alexander Belyaev 71
“Higgs and Electroweak Physics”
Technicolour
SUSYUED
ADD
Twin Higgs
Little Higgs
RS RS CHM
Higgs boson is opening door to comprehensive test of underlying theory of Nature!
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Alexander Belyaev 72
“Higgs and Electroweak Physics”
The main problem is to decode an underlying theory from the complicated set of signatures: down -> top
Tons of Signatures
SUSY UED ADD Twin Higgs
Little Higgs RS
CHM
top->downEasy
down->topVery
difficult
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Alexander Belyaev 73
“Higgs and Electroweak Physics”
Tons of Signatures
SUSY UED ADD Twin Higgs
Little Higgs RS
CHM
top->downEasy
down->topVery
difficult
https://hepmdb.soton.ac.uk/
The main problem is to decode an underlying theory from the complicated set of signatures: down -> top
![Page 74: Higgs and Electroweak Physics · Dark Matter Connections – Higgs and/or EW bosons portals Connection to inflation Neutrino Physics Flavour Physics ..... And Higgs & EW sector is](https://reader036.vdocument.in/reader036/viewer/2022090605/605ab0ccb1bc2346ff4f97e4/html5/thumbnails/74.jpg)
Alexander Belyaev 74
“Higgs and Electroweak Physics”
THANK YOU!
To all organizers and particular to Manfred for
fantastic workshop and weather (especially at the
excursion!)
To all speakers for very inspiring talks!
Thanks to everybody!