Origin of Matter and N-Nbar Oscillations
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Transcript of Origin of Matter and N-Nbar Oscillations
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DUSEL Theory WorkshopOhio State University
April 4-6, 2008
K.S. BabuOklahoma State University
K.S. Babu, R.N. Mohapatra, S. Nasri, Phys. Rev. Lett. (2007)K.S. Babu, R.N. Mohapatra, S. Nasri, Phys. Rev. Lett. (2006)
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Motivation
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‘t Hooft (1976)
Kuzmin, Rubakov, Shaposhnikov (1985)
Baryon Number Violation in Standard Model
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Sphalerons and Baryogenesis
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Popular B generation mechanisms
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N-Nbar Oscillations and Baryogenesis
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Post-sphaleron baryogenesis
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Possible B violating couplings
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S couplings
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Explicit Model
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B violating decay of S
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CP Asymmetry
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Model Predictions
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B Violating decays of Fermionic N
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CP asymmetry
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Dark Matter
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n-nbar oscillations
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Summary and Conclusions
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“Standard” Picture
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Dark Matter in Minimal SUSY
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Bino LSP
Ellis, Olive, Santoso (2003)
Thin blue strip – dark matter allowed
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Arkani-Hamed, Delgado, Guidice (2006)
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Proposal for B generation and Dark Matter
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Unified Model
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Unified Model (cont.)
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N decay
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CP asymmetry
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