Dark Matter Constraint on Split-SUSY & Implication at Colliders

Jin Min Yang

Institute of Theoretical Physics, CAS

Wang, Wang, Yang,

hep-ph/0512133EPJC 46, 521(2006)

1 、 SUSY Dark Matter

3 、 Dark Matter Constraint on Split-SUSY

2 、 SUSY & Split-SUSY

Outline ：

4 、 Implication at LHC & ILC

5 、 Conclusion

Introduction

Mass: weak-scale

Interaction: weak-scale

Dark Matter

WIMP

1 、 SUSY Dark Matter

LSP Dark Matter

Which one is LSP ?

LSP ?

LSP

2. SUSY & Split-SUSY

Split-SUSY

• Fine-tuning • GUT • Dark Matter

Weak-Scale SUSY

Sparticles

sfermions

sauginoshiggsinos

squarks

sleptons

gluino

charginos

neutralinos

Higgs Bosonsh, H (CP-even)

H

A (CP-odd)

SUSY Zoo:

Low-energy SUSY (MSSM):

All sparticles < TeV

5 Higgs bosons1 < 130 GeV

4 < TeV

Split-SUSY:

Super Particles

Higgs Bosons1 < 150 GeV

4 ： superheavy

Gauginos/Higgsinos < TeV

Others ： superheavy

SUSY Higgs Bosons at LHC:

one: in MSSM

one: in Split-SUSY

Discover

sparticles

sfermions

gauginoshiggsinos

MSSM

Split-SUSY

LHC

LHC

LHC ?

GUT with split-SUSY:

neutralino freeze-out

dark matter constraint

charginos

neutralinos

3. Dark matter constraint on Split-SUSY

neutralino: dark matter

Neutralino annilation:

WMAP 2

4 、 Implication at LHC & ILC

+

1-

1pp

e+e- +

1-

1

h H, A, H 　　 sfermions gaugino/Higgsino

Higgs bosons sparticles

SM

MSSM

Split-SUSY

???

5 、 Conclusion