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Exploring the Seesaw Mechanism and EDMs: Implications for Neutrino Physics and SUSY Models

This work investigates the predictive scenarios arising from the seesaw mechanism and Electric Dipole Moments (EDMs) within various Supersymmetric (SUSY) models. It discusses low-energy predictions based on neutrino data and outlines potential indirect tests at future experiments. By examining flavor violation, CP violation, and their correlation with neutralinos and leptons, the paper highlights the importance of neutrino parameters in understanding the structure of new physics. Ultimately, it aims to identify observable implications of SUSY seesaw models in relation to experiments and theoretical insights.

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Exploring the Seesaw Mechanism and EDMs: Implications for Neutrino Physics and SUSY Models

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  1. SNU, 14 May 2006 A Predictive Seesaw Scenario for EDMs Eung Jin Chun Korea Institute for Advanced Study hep-ph/0502022 with Masiero, Rossi, Vempati

  2. Neutrino mass seesawing to New Physics • Low-energy predictions featuring neutrino data. • Indirect test the model at future experiments. Seesaw & EDMs / E.J.Chun

  3. Supersymmetry: FCNC and CP problem • Squark/slepton mixing leads to FCNC • CP phases in soft terms lead to EDMs • Problems today, • Discovery in the future. Seesaw & EDMs / E.J.Chun

  4. FCNC & CPV as probes of New Physics • Limits on FCNC & CPV organized by a SUSY breaking mechanism: universal/flavor-blind mSUGRA/GMSB, etc. • Neutrino sector provides new source of flavor violation and CP phase. • Correlated pattern of LFV & EDM in relation to the neutrino data may then emerge to be tested: SUSY triplet (type II) seesaw model Seesaw & EDMs / E.J.Chun

  5. Supersymmetric Seesaw Models • Singlet Seesaw (Type I) • Triplet Seesaw (Type II) Seesaw & EDMs / E.J.Chun

  6. Supersymmetric Seesaw Models • Singlet Seesaw (Type I) • Triplet Seesaw (Type II) Seesaw & EDMs / E.J.Chun

  7. Supersymmetric Seesaw Models • Singlet Seesaw (Type I) • Triplet Seesaw (Type II) Seesaw & EDMs / E.J.Chun

  8. Low Energy Signatures of Supersymmetric Seesaw Model Neutrino Yukawa couplings induces • Lepton Flavor Violation • CP phase/Fermion EDMs Seesaw & EDMs / E.J.Chun

  9. Lepton Flavor Violation Fermion EDMs Tree or one-loop Seesaw & EDMs / E.J.Chun

  10. Flavor Violation due to Neutrino Yukawas (Type I) in the supersymmetric (scalar) sector • RG-induced soft masses • CP phase from higher-order Seesaw & EDMs / E.J.Chun

  11. Flavor Violation due to Neutrino Yukawas (Type I) in the supersymmetric (scalar) sector • RG-induced soft masses • CP phase from higher-order Nontrivial flavor structure Vanishes for degenerate RHN Seesaw & EDMs / E.J.Chun

  12. Flavor Violation due to Neutrino Yukawas (Type I) in the supersymmetric (scalar) sector • New contribution from B term CP phase of Im(B) Farzan, hep-ph/0310055 finite CMRV, hep-ph/0502022 Seesaw & EDMs / E.J.Chun

  13. LFV & EDM in Type I Ellis,Hisano,Raidal,Shimizu, hep-ph/0206110 An Ansatz suppressing ! e with Seesaw & EDMs / E.J.Chun

  14. LFV & EDM in Type I Ellis,Hisano,Raidal,Shimizu, hep-ph/0206110 • LFV in (HI) vs. (IH) : ! Seesaw & EDMs / E.J.Chun

  15. LFV & EDM in Type I Ellis,Hisano,Raidal,Shimizu, hep-ph/0206110 • Electron and Muon EDM Seesaw & EDMs / E.J.Chun

  16. LFV & EDM in Type I Ellis,Hisano,Raidal,Shimizu, hep-ph/0206110 • Electron and Muon EDM Seesaw & EDMs / E.J.Chun

  17. LFV, EDM ratios in Type I Conventional contribution Depend on unknowns in YN & Mk New contribution also induces quark EDM No MN dependence! CMRV, hep-ph/0502022 Seesaw & EDMs / E.J.Chun

  18. Flavor Violation due to Neutrino Yukawas (Type II) in the supersymmetric (scalar) sector • RGE of soft masses • New contribution from B term Seesaw & EDMs / E.J.Chun

  19. Dirac phase in V CPV in Type II • Conventional contribution from higher-loops suppressed • Leading B-term contribution Seesaw & EDMs / E.J.Chun

  20. LFV in Type II Rossi, hep-ph/0207006 The ratio of branching ratios depends only on neutrino parameters EJC,Park, hep-ph/0306069 Seesaw & EDMs / E.J.Chun

  21. Lepton EDMs in Type II CMRV, hep-ph/0502235 • Ratio of Lepton EDMs Depending on the neutrino mass patterns Seesaw & EDMs / E.J.Chun

  22. Lepton EDMs in Type II CMRV, hep-ph/0502235 • Ratio of Lepton EDMs Seesaw & EDMs / E.J.Chun

  23. Lepton EDMs in Type II CMRV, hep-ph/0502235 • Electron EDM • Muon and Tau EDMs Seesaw & EDMs / E.J.Chun

  24. Constraint from  -> e Triplet in SU(5) GUT : 15=(T,S,Z) Seesaw & EDMs / E.J.Chun

  25. Discovering triplet seesaw ? Maximally testable case with hierarchical neutrino mass pattern Seesaw & EDMs / E.J.Chun

  26. Current limit and future discovery(?)of LFV and EDM Seesaw & EDMs / E.J.Chun

  27. Conclusions • Supersymmetric seesaw model may lead to observable LFV and EDM. • Prediction of Singlet Seesaw is likely to be obscured by extra flavor structure in RH sector. • Neutrino flavor structure is reflected directly in low energy observables of Triplet Seesaw. • Soft B-term of heavy mass can induce sizable (finite) contributions to quark and lepton EDM. • EDM and LFV ratios are predicted only in terms of neutrino parameters in Triplet Seesaw under the assumption of B-domination: justifiable?? Seesaw & EDMs / E.J.Chun

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