On Gaugino Contributions to Soft Leptogenesis
arXiv:0901.0008 · doi:10.1088/1126-6708/2009/03/073
Abstract
We study the contributions to CP violation in right-handed sneutrino decays induced by soft supersymmetry-breaking gaugino masses including flavour effects and paying special attention to the role of thermal corrections. Using a field-theoretical as well as a quantum mechanical approach we compute the CP asymmetries and we conclude that for all the soft-supersymmetry breaking sources of CP violation considered, an exact cancellation between the asymmetries produced in the fermionic and bosonic channels occurs at T=0 up to second order in soft supersymmetry-breaking parameters. Once thermal effects are included the new sources of CP violation induced by supersymmetry-breaking gaugino masses can be sizeable and they can produce the observed baryon asymmetry for conventional values of the B parameter.
20 pages, 4 figures
References in corpus (37)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
- Leptogenesis
- A lower bound on the right-handed neutrino mass from leptogenesis
- Resonant Leptogenesis
- Towards a complete theory of thermal leptogenesis in the SM and MSSM
- CP Violation and Baryogenesis due to Heavy Majorana Neutrinos
- Baryogenesis through leptogenesis
- The importance of flavor in leptogenesis
- Flavour Issues in Leptogenesis
- Hadronic Decay of Late-Decaying Particles and Big-Bang Nucleosynthesis
- Electroweak-Scale Resonant Leptogenesis
- Cosmic Microwave Background, Matter-Antimatter Asymmetry and Neutrino Masses
- Flavour Matters in Leptogenesis
- Big-Bang Nucleosynthesis with Unstable Gravitino and Upper Bound on the Reheating Temperature
- Flavor effects on leptogenesis predictions
- Baryon Asymmetry, Neutrino Mixing and Supersymmetric SO(10) Unification
- Flavoured leptogenesis: a successful thermal leptogenesis with N_1 mass below 10^8 GeV
- Resonant τ-Leptogenesis with Observable Lepton Number Violation
- Soft Leptogenesis
- Leptogenesis from Supersymmetry Breaking
- Leptogenesis and the Violation of Lepton Number and CP at Low Energies
- Seesaw geometry and leptogenesis
- Quantum mechanics of baryogenesis
- Flavour-Dependent Leptogenesis with Sequential Dominance
- Quantum Boltzmann Equations and Leptogenesis
- On Resonant Leptogenesis
- Leptogenesis in the minimal supersymmetric triplet seesaw model
- New Ways to Soft Leptogenesis
- Quantum Resonant Leptogenesis and Minimal Lepton Flavour Violation
- Lepton Flavor Violating Decays, Soft Leptogenesis and SUSY SO(10)
- Soft Leptogenesis in Higgs Triplet Model
- Natural soft leptogenesis
- Soft leptogenesis in the inverse seesaw model
- Flavoured Soft Leptogenesis
- Soft Leptogenesis in Warped Extra Dimensions
- On Quantum Effects in Soft Leptogenesis
- SO(10) unified models and soft leptogenesis
Cited by in corpus (12)
- The Phenomenology of Right Handed Neutrinos
- Leptogenesis in the Universe
- On the full Boltzmann equations for Leptogenesis
- Lepton Flavor Equilibration and Leptogenesis
- Cuts, Cancellations and the Closed Time Path: The Soft Leptogenesis Example
- Early Universe effective theories: The Soft Leptogenesis and R-Genesis Cases
- Decaying Dark Matter in the Supersymmetric Standard Model with Freeze-in and Seesaw mechanims
- Flavoured soft leptogenesis and natural values of the B term
- Nonthermal violation in soft leptogenesis
- Soft leptogenesis in the NMSSM with a singlet right-handed neutrino superfield
- Leptogenesis in supersymmetry with one violating coupling
- Naturalness in Soft Leptogenesis and Gravitino Mass Bound due to Primordial Black Holes