phenomenology of supersymmetry and dark matter...
TRANSCRIPT
![Page 1: Phenomenology of Supersymmetry and Dark Matter constraintsdesy.de/~covil/entapp/entapp_belyaev_28_02_2008.pdf · Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008](https://reader033.vdocuments.site/reader033/viewer/2022041918/5e6ae493437179269c6ebc56/html5/thumbnails/1.jpg)
Alexander Belyaev 1
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Phenomenology of Supersymmetry and Dark Matter constraints
Alexander Belyaev
Southampton University & Rutherford Accelerator LAB
ENTAPP, DESY February 28, 2008
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Alexander Belyaev 2
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
OUTLINE
Attractive features of Supersymmetry
Viable Supersymmetric modelsminimal Supergravity model as an example (mSUGRA)
theoretical and experimental constraints
problems of mSUGRA and motivation for non-universal
Supergravity models
SO(10) SUSY GUTs models with Yukawa couplings unification
open questions
Conclusions
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Alexander Belyaev 3
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SM describes perfectly almost all data ...
EW Precision fits http://lepewwg.web.cern.ch/LEPEWWG/
The present status of the SM
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Alexander Belyaev 4
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SM describes perfectly almost all data ... but has serious problems
Experimental problemsDark Matter & Dark Energy problemmatter – anti-matter asymmetry: baryogenesis problemthe origin of EWSB is still unknown. Higgs boson is not found yet …
Theoretical problemsthe problem of large quantum corrections: fine-tuning problemat very high energy forces start to behave similar due to effect of different 'running' of coupling constants for abelian and non-abelian fields. But unification is not exact!gravity stays apart – not included into SM
Open questions
(100 GeV)2 = (1016 GeV)2 (1016 GeV)2
the cancellation is at the 28th digitfor UV ~ 1016 GeV
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Alexander Belyaev 5
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Supersymmetryboson-fermion symmetry aimed to unify all forces in nature
extends Poincare algebra to Super-Poincare Algebra: the most general set of space-time symmetries! (1971-74)
Golfand and Likhtman'71; Ramond'71; Neveu,Schwarz'71; Volkov and Akulov'73; Wess and Zumino'74
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Alexander Belyaev 6
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
γ,W,Zh,H,A,H
e,ν,u,dSUSY partnerParticle
04
01
21
~...~,~,~
χχχχ ±±
due~,~,~,~ ν
spin 1/2 spin 0
spin 1 and 0 spin 1/2
Supersymmetryboson-fermion symmetry aimed to unify all forces in nature
extends Poincare algebra to Super-Poincare Algebra: the most general set of space-time symmetries! (1971-74)
Golfand and Likhtman'71; Ramond'71; Neveu,Schwarz'71; Volkov and Akulov'73; Wess and Zumino'74
![Page 7: Phenomenology of Supersymmetry and Dark Matter constraintsdesy.de/~covil/entapp/entapp_belyaev_28_02_2008.pdf · Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008](https://reader033.vdocuments.site/reader033/viewer/2022041918/5e6ae493437179269c6ebc56/html5/thumbnails/7.jpg)
Alexander Belyaev 7
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
γ,W,Zh,H,A,H
e,ν,u,dSUSY partnerParticle
04
01
21
~...~,~,~
χχχχ ±±
due~,~,~,~ ν
spin 1/2 spin 0
spin 1 and 0 spin 1/2
could give rise the proton decay!
Supersymmetryboson-fermion symmetry aimed to unify all forces in nature
extends Poincare algebra to Super-Poincare Algebra: the most general set of space-time symmetries! (1971-74)
Golfand and Likhtman'71; Ramond'71; Neveu,Schwarz'71; Volkov and Akulov'73; Wess and Zumino'74
![Page 8: Phenomenology of Supersymmetry and Dark Matter constraintsdesy.de/~covil/entapp/entapp_belyaev_28_02_2008.pdf · Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008](https://reader033.vdocuments.site/reader033/viewer/2022041918/5e6ae493437179269c6ebc56/html5/thumbnails/8.jpg)
Alexander Belyaev 8
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Lightest SUSY particle (LSP) is stable!
the absence of proton decay suggests R-parityγ,W,Zh,H,A,H
e,ν,u,dSUSY partnerParticle
04
01
21
~...~,~,~
χχχχ ±±
due~,~,~,~ ν
spin 1/2 spin 0
spin 1 and 0 spin 1/2
Supersymmetryboson-fermion symmetry aimed to unify all forces in nature
extends Poincare algebra to Super-Poincare Algebra: the most general set of space-time symmetries! (1971-74)
Golfand and Likhtman'71; Ramond'71; Neveu,Schwarz'71; Volkov and Akulov'73; Wess and Zumino'74
![Page 9: Phenomenology of Supersymmetry and Dark Matter constraintsdesy.de/~covil/entapp/entapp_belyaev_28_02_2008.pdf · Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008](https://reader033.vdocuments.site/reader033/viewer/2022041918/5e6ae493437179269c6ebc56/html5/thumbnails/9.jpg)
Alexander Belyaev 9
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Lightest SUSY particle (LSP) is stable!
the absence of proton decay suggests R-parityγ,W,Zh,H,A,H
e,ν,u,dSUSY partnerParticle
04
01
21
~...~,~,~
χχχχ ±±
due~,~,~,~ ν
spin 1/2 spin 0
spin 1 and 0 spin 1/2
Supersymmetryboson-fermion symmetry aimed to unify all forces in nature
extends Poincare algebra to Super-Poincare Algebra: the most general set of space-time symmetries! (1971-74)
Golfand and Likhtman'71; Ramond'71; Neveu,Schwarz'71; Volkov and Akulov'73; Wess and Zumino'74
MSSM Higgs sector: two Higgs doublets provide masses for up- and down-type fermions, cancellation of anomalies5 Higgs bosons h,H,A,H+/- : M
A , tan v
u/v
d define Higgs sector at tree-level
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Alexander Belyaev 10
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SUSY invented more then 30 years ago has 'little' problem
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Alexander Belyaev 11
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SUSY invented more then 30 years ago has 'little' problem
it has not been found yet!
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Alexander Belyaev 12
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SUSY invented more then 30 years ago has 'little' problem
it has not been found yet!Why it is still so attractive?
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Alexander Belyaev 13
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Consequences of SUSY
Provides good DM candidate – LSP
CP violation can be incorporated -
baryogenesis via leptogenesis
Radiative EWSB
Solves fine-tuning problem
Provides gauge coupling unification
local supersymmetry requires
spin 2 boson – graviton!
allows to introduce fermions into
string theories
SUSY was not deliberately designed to solve the SM problems!(contrary to many recent models)
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Alexander Belyaev 14
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SUSY breaking and mSUGRA scenario
Gravity mediation Gauge mediation Anomaly mediation Gaugino mediation
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Alexander Belyaev 15
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Minimal Supergravity Model (mSUGRA)
ISASUGRA, SPHENO,SUSPECT,SOFTSUSY
independent parameters:
● m0 – universal scalar mass
● m1/2 – universal gaugino masses
● A trilinear soft parameter
● tan parameter
(B traded for tan
● sign(μ), μ2 value is fixed
by the minimization condition for
the Higgs potential
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Alexander Belyaev 16
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Crucial constraint from Cosmology: DM candidate should be heavy, neutral, stable, non-baryonic Dark Matter candidate
Baryons: 4%± 0.4% Dark Matter: 23%±4% Dark Energy: 73%± 4%
Evolution of neutralino relic density Challenge is to evaluate thousands
annihilation/co-annihilation diagrams
relic density depends crucially on
thermal equilibrium stage:
universe cools: , n = neq~ e−m/T
neutralinos “freeze-out” at
ISARED code: complete set of processes
Baer, A.B.A.B., Balazs '02
exact tree-level calculations using CompHEP
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Alexander Belyaev 17
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Neutralino relic density in mSUGRAmost of the parameter space is ruled out! special regions with high are required to get
1. bulk region: light sfermions
2. stau coannihilation:degenerate and stau
3. focus point:mixed neutralino,low importance of higgsino-wino component
Baer, A.B, Balazs '02
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Alexander Belyaev 18
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
1. bulk region: light sfermions
2. stau coannihilation:degenerate and stau
3. focus point:mixed neutralino,low importance of higgsino-wino component
additional regions:Z/h annihilationstop coannihilation
4. funnel: (large tan )annihilation via A, H
Neutralino relic density in mSUGRA
Baer, A.B, Balazs '02
most of the parameter space is ruled out! special regions with high are required to get
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Alexander Belyaev 19
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Baer,A.B.,Krupovnickas'03
Collider signatures in DM allowed regions
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Alexander Belyaev 20
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Baer,A.B.,Krupovnickas'03
Collider signatures in DM allowed regions
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Alexander Belyaev 21
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
TevatronTevatron
Baer,A.B.,Krupovnickas'03
1
23
4
Collider signatures in DM allowed regionsDM allowed regions are difficult for the observation at the colliders:
stau(stop) co-annihilation , FP region: small visible energy release
LHC and ILC are highly complementary!
productiondecay
1
2
3
4
production
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Alexander Belyaev 22
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Why FP region is importantsmall value of | |-parameter: mixed higgsino-bino LSPLight mass spectum of chargino and neutralinoslow value of | |-parameter was advocated as “fine-tuning” measureDM motivated mSUGRA region with 'natural' neutralino mass ~100 GeV !ILC connection: the signal observation at the LHC is crucial for the fate of ILC neutralino
and chargino mass matrices
many more details in D.P. Roy's talk!
Chan, Chattopadhyay,Nath '97; Feng, Matchev, Moroi '99; Baer, Chen,Paige,Tata '95, Chattopadhyay, Datta's, Roy '00
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Alexander Belyaev 23
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Recent Studies in FP region
Bednyakov, Budagov,Gladyshev, Kazakov,Khoriauli, Khubua, Khramov
DeBoer, Sander, Zhukov,Gladyshev, Kazakov
Baer,Barger,Shaughnessy,Summy,Wang
Das,Datta,Guchait,Maity,Mukherjee
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Alexander Belyaev 24
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
'Far' FP analysis at the LHC
'far' FP region dominated by EW chargino-neutralino production - requires special cuts/analysis the signal observation in the 'far' FP region could be crucial for the fate of ILC
A.B, Genest, Leroy, Mehdiyev'07
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Alexander Belyaev 25
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
FP cross sections
Baer et al'07
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Alexander Belyaev 26
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Improved strategy: softer preselection + new kinematical cuts
(max)
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Alexander Belyaev 27
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Relative contributions of SUSY subprocesses (before/after cuts)
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Alexander Belyaev 28
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Relative contributions of SUSY subprocesses (before/after cuts)
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Alexander Belyaev 29
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Extended LHC reach
A.B, Genest, Leroy, Mehdiyev'07
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Alexander Belyaev 30
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Complementarity of Direct and Indirect DM search
Stage 1: CDMS1, Edelweiss, Zeplin1Stage 2: CDMS2, CRESST2, Zeplin2 Stage 3: SuperCDMS, Zeplin 1 ton, WARP
DM direct detection: neutralino scattering off nuclei
DM indirect detection: DM indirect detection: signatures from neutralino annihilationin halo, core of the Earth and Sunphotons, anti-protons, positrons, neutrinos
Neutrino telescopes: Amanda, Icecube, Antares
Baer, A.B., Krupovnikas, O'Farrill '04
Isares codeIsared code
10-9 pb
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Alexander Belyaev 31
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
mSUGRA DD search
A.B., Dar, Gogoladze, Mustafayev, Shafi
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Alexander Belyaev 32
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
More on SUSY constraints ...
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Alexander Belyaev 33
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
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Alexander Belyaev 34
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
ISATOOLS
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Alexander Belyaev 35
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
MSSM Higgs search at LEP2
Zh and Ah channels are highly complementary!
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Alexander Belyaev 36
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Light MSSM Higgs scenarioKey-point: SUSY corrections are non-universal for H and bbH couplings (lagre + nondecoupled (light) MA and MH (~ 120 GeV)
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Alexander Belyaev 37
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
experiment
Theorybased one+e- data
Misiak,Steinhauser '06 Theory:
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Alexander Belyaev 38
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
mSUGRA: combined constraints
Baer, A.B., Krupovnickas, Mustafayev hep-ph/0403214
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Alexander Belyaev 39
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
mSUGRA: analysis
Baer, A.B., Krupovnickas, Mustafayev hep-ph/0403214
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Alexander Belyaev 40
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
O. Buchmueller, R. Cavanaugh, A. De Roeck, S. Heinemeyer, G. Isidori, P. Paradisi, F. Ronga, A. Weber, G. W. ’07
Global CMSSM fit 68% (dotted) and 95% (solid) CL regions
Rozkowski,Austri,Trotta ’07
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Alexander Belyaev 41
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SUGRA: normal mass hierarchy (NMH)
Baer, A.B., Krupovnickas, Mustafayev hep-ph/0403214
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Alexander Belyaev 42
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
NMH: SUSY spectra and LHC signatures
m0(3)
m0(1)
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Alexander Belyaev 43
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Scenario with non-universal Higgs masses (NUHM)
Baer, A.B., Mustafayev, Profumo, Tata '05
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Alexander Belyaev 44
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Scenario with non-universal Higgs masses (NUHM)
Baer, A.B., Mustafayev, Profumo, Tata '05
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Alexander Belyaev 45
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Scenario with non-universal Higgs masses (NUHM)
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Alexander Belyaev 46
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Collider signatures for NUMH1 scenario
ILC:
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Alexander Belyaev 47
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SUSY GUTs
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Alexander Belyaev 48
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SUSY GUTs
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Alexander Belyaev 49
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Results for SO(10) model
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Alexander Belyaev 50
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
SO(10): parameter space providing Yukawa unification
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Alexander Belyaev 51
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Non-universal gaugino masses (details in Eun-Kyung talk)SUSY Heterotic superstring models with orbifold compactification: SUSY breaking dominated by the moduli fieldMixed modulus-AMSB (KKLT construction)Extra-dimensional SUSY GUT models where SUSY breaking is communicated from the SUSY breaking brane to the visible brane via gaugino mediation (e.g. Dermisek-Mafi model)
Baer, Mustafayev,Park,Profumo,Tata'05
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Alexander Belyaev 52
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Non-universal gaugino masses: low value of fine tuning
King, Roberts, Roy'07
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Alexander Belyaev 53
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
One more example of complementarity of Direct dark matter search
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Alexander Belyaev 54
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Xenon-10 excludes “Egret” mSUGRA point!
mSUGRA
NUHM2 is not excluded!
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Alexander Belyaev 55
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Xenon-10 excludes “Egret” mSUGRA point!
mSUGRA
NUHM2 is not excluded!
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Alexander Belyaev 56
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Collider signatures for NUHM2 model within light neutralino (50-70 GeV) scenario
nleptons
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Alexander Belyaev 57
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Collider signatures: distinguishing NUHM2 and mSUGRAwithin light neutralino (50-70 GeV) scenario
mSUGRANUHM2
Mll(GeV) M
ll(GeV)
Baer, A.B., Summy
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Alexander Belyaev 58
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
ConclusionsSUSY is very compelling theory
CDM constraints are crucial
LHC: covers funnel region and stau-coannihilation region,
but only low part of FP/HB is covered
ILC: greatly extends LHC reach in FP/HB
Extention of LHC reach in FP region could be crucial for ILC fate,
2 .4 TeV gluino mass is (indirectly) accessible with new analysis!
direct/indirect DM search experiments: high degree of complementarity to
LHC/ILC
combined constraints: mSUGRA is practically excluded!
one step beyond the universality opens parameter space and new signatures:
NMH, NUMH, non-universal gauginos motivated by SUSY GUTS
Present constraints/data, especially CDM, give a good idea how SUSY
should look like at the LHC and DM search experiments.
Road is open to finally hunt down EW scale Supersymmetry!
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Alexander Belyaev 59
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Open Questions to DiscussMSSM problems and extended SUSY models (Jonathan and David)
Distinguishing SUSY from non-SUSY theories, involving DM search experiments
Developing further LHC-DM connection/complementarity (Workshop?/Summary?)
...
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Alexander Belyaev 60
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Appendix
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Alexander Belyaev 61
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Sparticle reach of LHC for 100 fb−1
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Alexander Belyaev 62
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
Sparticle reach of LHC various luminosities
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Alexander Belyaev 63
Supersymmetry and Dark Matter Constraints ENTAPP. DESY, 28/02/2008
ILC FP/HB studyBaer, A.B.,Krupovnickas,Tata