New Ways to Soft Leptogenesis

Abstract

Soft supersymmetry breaking terms involving heavy singlet sneutrinos provide new sources of lepton number violation and of CP violation. In addition to the CP violation in mixing, investigated previously, we find that `soft leptogenesis' can be generated by CP violation in decay and in the interference of mixing and decay. These additional ways to leptogenesis can be significant for a singlet neutrino Majorana mass that is not much larger than the supersymmetry breaking scale, $M<100m_{SUSY}$. In contrast to CP violation in mixing, for some of these new contributions the sneutrino oscillation rate can be much faster than the decay rate, so that the bilinear scalar term need not be smaller than its natural scale.

18 pages, 3 figures

References in corpus (7)

• Mass Matrix Models: The Sequel
• Soft Leptogenesis
• Leptogenesis from Supersymmetry Breaking
• Baryogenesis from mixed particle decays
• Low-scale leptogenesis and soft supersymmetry breaking
• Leptogenesis from a sneutrino condensate revisited
• Sleptogenesis

Cited by in corpus (43)

• Leptogenesis
• The Phenomenology of Right Handed Neutrinos
• Asymmetric Dark Matter from Leptogenesis
• Flavoured leptogenesis: a successful thermal leptogenesis with N_1 mass below 10^8 GeV
• Efficiency and maximal CP-asymmetry of scalar triplet leptogenesis
• Resonant enhancement in leptogenesis
• Supersymmetric Thermalization and Quasi-Thermal Universe: Consequences for Gravitinos and Leptogenesis
• Phenomenology of the nMSSM from colliders to cosmology
• Gravitino Freeze-In
• Soft Leptogenesis in Higgs Triplet Model
• The Cosmological Axino Problem
• Leptogenesis and dark matter unified in a non-SUSY model for neutrino masses
• Natural soft leptogenesis
• Thermal leptogenesis in a TeV scale model for neutrino masses
• Soft leptogenesis in the inverse seesaw model
• Soft Leptogenesis in Warped Extra Dimensions
• Schizophrenic Neutrinos and $\nu$-less Double Beta Decay
• Mass Spectrum and Higgs Profile in BLSSM
• Right-Handed Sector Leptogenesis
• Analysis of Leptogenesis in Supersymmetric Triplet Seesaw Model
• Lepton Flavor Equilibration and Leptogenesis
• On the full Boltzmann equations for Leptogenesis
• Supersymmetric $SO(10)$-inspired leptogenesis and a new $N_2$-dominated scenario
• Cuts, Cancellations and the Closed Time Path: The Soft Leptogenesis Example
• On Quantum Effects in Soft Leptogenesis
• Early Universe effective theories: The Soft Leptogenesis and R-Genesis Cases
• Phenomenological Consequences of Soft Leptogenesis
• New Ways to Leptogenesis with Gauged B-L Symmetry
• Naturally Degenerate Right Handed Neutrinos
• On Gaugino Contributions to Soft Leptogenesis
• Electron EDM and soft leptogenesis in supersymmetric B-L extension of the standard model
• Decaying Dark Matter in the Supersymmetric Standard Model with Freeze-in and Seesaw mechanims
• Exotic fermion multiplets as a solution to baryon asymmetry, dark matter and neutrino masses
• Flavoured soft leptogenesis and natural values of the B term
• Nonthermal $CP$ violation in soft leptogenesis
• Neutrino Masses, Baryon Asymmetry, Dark Matter and the Moduli Problem : A Complete Framework
• Neutrino texture saturating the CP asymmetry
• Soft Leptogenesis and Gravitino Dark Matter in Gauge Mediation
• Soft leptogenesis in the NMSSM with a singlet right-handed neutrino superfield
• Bilarge neutrino mixing from supersymmetry with high-scale nonrenormalizable interactions
• Naturalness in Soft Leptogenesis and Gravitino Mass Bound due to Primordial Black Holes
• The Supersymmetric $(B-L)$ model with three non-identical right-handed neutrinos
• Leptogenesis from composite singlets