1. The Inert Doublet Model A new archetype of wimp dark matter Michel Tytgat Université Libre de Bruxelles Brussels, Belgium TAUP2007, Sendai, Japan Based on L. Lopez Honorez, J. Oliver & E. Nezri hep-ph/0612275 JCAP 0702:028,2007 Thomas Hambye arXiv:0707.0633

2. The Inert Doublet Model What is it good for? Dark matters Results  B

3. The Inert Doublet Model What is it good for? Dark matters Results  B

4. The Minimal Inert Doublet Model All SM fields are even (e.g. no H 2 /quark couplings)  2 symmetry Stable Higgs (the shiggs) Standard Model with 2 Higgs doublets Vacuum and

6. The Inert Doublet Model What is it good for? Dark matters Results  B

7. + + H0H0 May push M higgs up to 600 GeV 0 Electroweak Symmetry Breaking I W,Z

8. Electroweak Symmetry Breaking II h V(h) V 1-loop (h) h h H2H2 Large effects from top quark Need large quartic couplings for M h > 115 GeV

9. L  f L H 2 N R + h.c. NRNR - N R Under  2 νννν NRNR NRNR M ν = λ 5 f 2 v2v2 16 π 2 M NR ~ Standard See Saw M NR 4 π / λ 5 M NR Radiative See Saw lower scale M NR

10. The Inert Doublet Model What is it good for? Dark matters Results  B

11. The Weakly Interacting Massive Particle (WIMP) paradigm

12. Electroweak interactions Higgs interactions co-annihilationslarge cross-section Unitarity limit on the mass of H 0 (Griest & Kamionkowski)

13. The Inert Doublet Model What is it good for? Dark matters Results  B

14. Systematic analysis & direction detection & galactic fluxes

15. Coannihilation effects

21. LHC signatures p p  W*  H + H 0 (A 0 ) p p  Z* or γ*  H 0 A 0 A 0  H 0 Z*  dilepton + missing energy H +  H0 (or A 0 ) W*

22. Archetype or Perfect Example Weakly interacting massive particle Simple model (few parameters, physics transparent) Potentially interesting signatures

23. The Inert Doublet Model What is it good for? Dark matters Results  B

24. There many dark matter candidates and even more baryogenesis scenarii yet They do not explain why DM interactions (from weak, to superweak, to gravitational) Between 10 -6 eV and 10 19 GeV CP violation, non-equilibrium dynamics, B violation QCD dynamics

25. L  f L H 2 N R + h.c. NRNR H2H2 L NRNR H2H2 L and CP violating, out-of-equilibrium decay may produce N L – N L c = A ≠ 0andN H2 – N H2 c = - A Dark matter asymmetry