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A Realization of Effective SUSY

A Realization of Effective SUSY. Zhen- hua Zhao ITP,CAS Liu & Zhao arXiv:1312.7389. Contents. Motivation The Model Phenomenological Consequence Summary. Higgs with 125 GeV mass. SM is completed and self-consistent. Gauge Hierarchy Problem.

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A Realization of Effective SUSY

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  1. A Realization of Effective SUSY Zhen-hua Zhao ITP,CAS Liu & Zhao arXiv:1312.7389

  2. Contents • Motivation • The Model • Phenomenological Consequence • Summary

  3. Higgs with 125 GeV mass SM is completed and self-consistent

  4. Gauge Hierarchy Problem When extrapolated to higher scale Λ, Higgs mass suffers quadratic divergence problem TeV SUSY is good candidate for solving this problem

  5. Search for SUSY Nothing found

  6. Motivation • LHC constraints on SUSY particles 1st & 2nd generation squarks heavy as 10 TeV • Original motivation for SUSY: Naturalness 3rd generation & Higgsino, gaugino light as 1 TeV A model realizing this mass spectrum needed

  7. Effective SUSY For solving FCNC problem induced by soft terms “irrelevancy” hypothesis: 1st&2nd generation squarks very heavy e.g. 10 TeV “Naturalness” criterion: 3rd generation squarks should stay at 1 TeV A. G. Cohen et al hep-ph/9607394

  8. Framework Liu hep-ph/0408234 N. Craig et al arXiv:1103.3708

  9. Gauge-Mediated-SUSY-Breaking Hidden Sector G1 Sector G2 Sector

  10. Gauge Symmetry Breaking G1 G2 SM Gauge Symmetry

  11. Gauge Coupling Constants or

  12. Yukawa Coupling Only Yukawa coupling for 3rd generation allowed Irrelevant operators allowed by G1 G2 exist After Gauge Symmetry Breaking

  13. Produce Yukawa Coupling An extra vector-like generation under G2 N. Craig et al arXiv:1103.3708

  14. Higgs mass and A-term A. Arbey et al arXiv:1112.3028

  15. Higgs-Messenger coupling Z. F. Kang et al arXiv:1203.2336

  16. Fields in G2 sector

  17. Strong Unification The ratio of gauge couplings flow to an infrared fixed point D. Ghilencea et al hep-ph/9707462    EW scale Intermediate scale M Landau Pole

  18. Gauge coupling running       EW scale Intermediate scale M Landau Pole

  19. Summary • Effective SUSY can reconcile naturalness requirement with experimental results • A realistic model is introduced and its phenomenological consequence discussed • Not only hierarchy among sparticles but also fermions among three generations can be produced • Strong coupling can be predicted without Grand Unification

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