TeV leptogenesis in Z-prime models and its collider probe

Abstract

We show that the U(1)-prime models linked with the seesaw mechanism at TeV scale can lead to a successful baryogenesis through soft leptogenesis with a resonant behavior in the B parameter. Such a consideration constrains the Z-prime mass to be larger than 2-3 TeV depending on the seesaw scale and the spharelon rate. Together with multi-TeV Z-prime, large sneutrino-antisneutrino mixing and CP violating phenomena required by TeV leptogenesis could be searched for in future colliders by observing the distinct same-sign dilepton--dichargino as well as dislepton--diHiggs signatures.

10 pages with 2 figures

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• Natural soft leptogenesis
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• Leptogenesis origin of Dirac gaugino dark matter
• Kadanoff-Baym approach to the thermal resonant leptogenesis
• Heavy Majorana Neutrino Production at e- gamma Colliders
• Dilepton Signal of a Type-II Seesaw at CERN LHC: Reveals a TeV Scale B-L Symmetry
• Resonant Dirac leptogenesis on throats
• Leptogenesis from Soft Supersymmetry Breaking (Soft Leptogenesis)
• Analysis of Leptogenesis in Supersymmetric Triplet Seesaw Model
• PeV scale Left-Right symmetry and baryon asymmetry of the Universe
• F_D-Term Hybrid Inflation with Electroweak-Scale Lepton Number Violation
• Low-Energy Thermal Leptogenesis in an Extended NMSSM Model
• Leptogenesis in supersymmetry with one $L$ violating coupling