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Exploring the Origin of Matter and N-Nbar Oscillations in Baryogenesis

This workshop presentation discusses the pivotal role of baryon number violation in the Standard Model, referencing influential studies by 't Hooft and the 1985 work of Kuzmin, Rubakov, and Shaposhnikov on baryogenesis via sphaleron processes. The phenomenon of N-Nbar oscillations is examined, along with explicit models predicting baryon-violating decays and associated CP asymmetries. We also explore dark matter implications within a unified model and discuss various baryogenesis mechanisms, emphasizing their significance in understanding matter's origin in the universe.

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Exploring the Origin of Matter and N-Nbar Oscillations in Baryogenesis

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  1. Origin of Matter and N-Nbar Oscillations K.S. Babu Oklahoma State University DUSEL Theory Workshop Ohio State University April 4-6, 2008 K.S. Babu, R.N. Mohapatra, S. Nasri, Phys. Rev. Lett. (2007) K.S. Babu, R.N. Mohapatra, S. Nasri, Phys. Rev. Lett. (2006)

  2. Motivation ♦ ♦ ♦

  3. Baryon Number Violation in Standard Model ♦ ♦ ‘t Hooft (1976) ♦ ♦ Kuzmin, Rubakov, Shaposhnikov (1985)

  4. Sphalerons and Baryogenesis ♦

  5. Popular B generation mechanisms

  6. N-Nbar Oscillations and Baryogenesis

  7. Post-sphaleron baryogenesis

  8. Possible B violating couplings

  9. S couplings

  10. Explicit Model

  11. B violating decay of S

  12. CP Asymmetry

  13. Model Predictions

  14. B Violating decays of Fermionic N

  15. CP asymmetry

  16. Dark Matter

  17. n-nbar oscillations

  18. Summary and Conclusions

  19. “Standard” Picture

  20. Dark Matter in Minimal SUSY

  21. Bino LSP Thin blue strip – dark matter allowed Ellis, Olive, Santoso (2003)

  22. Arkani-Hamed, Delgado, Guidice (2006)

  23. Proposal for B generation and Dark Matter

  24. Unified Model

  25. Unified Model (cont.)

  26. N decay

  27. CP asymmetry

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