Leptogenesis via multiscalar coherent evolution with supersymmetric neutrino see-saw

Abstract

A novel scenario of leptogenesis is investigated in the supersymmetric neutrino see-saw model. The right-handed sneutrino $\tilde{N}$ and the $\varphi$ field in the $\tilde{L}{H}_u$ direction of the slepton and Higgs doublets start together coherent evolution after the inflation with right-handed neutrino mass $M_N$ smaller than the Hubble parameter of inflation. Then, after some period the motion of $\tilde{N}$ and $\varphi$ is drastically changed by the cross coupling $M_N{h}_{\nu }{\tilde{N}}^{\ast }\varphi \varphi$ from the $M_{N}NN$ and $h_{\nu }NL{H}_u$ terms, and the significant asymmetries of $\tilde{N}$ and $\tilde{L}$ are generated. The $\tilde{L}$ asymmetry is fixed later by the thermal effect as the lepton number asymmetry for baryogenesis, while the $\tilde{N}$ asymmetry disappears through the decays $\tilde{N}\to \bar{L}{\overline{\stackrel{~}{H}}}_u,\tilde{L}{H}_u$ with almost the same rate but opposite final lepton numbers.

4pages, 1 figure; submitted to Physical Review D. The renormalization group effects were included

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Cited by in corpus (10)

• Leptogenesis from a sneutrino condensate revisited
• Dynamics of MSSM flat directions consisting of multiple scalar fields
• Cosmological Baryon Asymmetry and Neutrinos: Baryogenesis via Leptogenesis in Supersymmetric Theories
• Affleck Dine leptogenesis via multiple flat directions
• Lepton flavor violation with supersymmetric Higgs triplets in TeV region for neutrino masses and leptogenesis
• Affleck-Dine leptogenesis via multiscalar evolution in a supersymmetric seesaw model
• Leptogenesis Scenarios via Non-Thermally Produced Right-handed Neutrino and Sneutrino in Supersymmetric Seesaw Model
• Baryogenesis via left-right asymmetry generation by Affleck-Dine mechanism in Dirac neutrino model
• Light Higgs boson scenario in the SUSY seesaw model
• Towards the effective potential of the Littlest Higgs model