Efficiency and maximal CP-asymmetry of scalar triplet leptogenesis

Abstract

We study thermal leptogenesis induced by decays of a scalar SU(2)_L triplet. Despite the presence of gauge interactions, unexpected features of the Boltzmann equations make the efficiency close to maximal in most of the parameter space. We derive the maximal CP asymmetry in triplet decays, assuming that it is generated by heavier sources of neutrino masses: in this case successful leptogenesis needs a triplet heavier than 2.8 10^{10} GeV and does not further restrict its couplings, allowing detectable mu --> e gamma, tau --> mu gamma rates in the context of supersymmetric models. Triplet masses down to the TeV scale are viable in presence of extra sources of CP-violation.

arXiv comment12 pages, 6 figures. Interference term added to eq. (16d), figures recomputed (the difference is almost invisible)

References in corpus (30)

• Minimal Flavour Violation: an effective field theory approach
• A lower bound on the right-handed neutrino mass from leptogenesis
• Towards a complete theory of thermal leptogenesis in the SM and MSSM
• Thermal Production of Gravitinos
• Neutrino Masses and Leptogenesis with Heavy Higgs Triplets
• Baryogenesis through leptogenesis
• Updated Nucleosynthesis Constraints on Unstable Relic Particles
• CP Asymmetry in Majorana Neutrino Decays
• b-tau unification and large atmospheric mixing: a case for non-canonical see-saw
• Constraints on neutrino masses from leptogenesis models
• Doubly charged Higgs at LHC
• Leptogenesis from $\tilde{N}$-dominated early universe
• Consequences of Triplet Seesaw for Leptogenesis
• Minimal SUSY SO(10), b-$\tau$ unification and large neutrino mixings
• Type II Leptogenesis and the Neutrino Mass Scale
• Soft Leptogenesis
• Leptogenesis from Supersymmetry Breaking
• Leptogenesis at the TeV scale
• On the Thermal Regeneration Rate for Light Gravitinos in the Early Universe
• Supersymmetric Triplet Higgs Model of Neutrino Masses and Leptogenesis
• Supersymmetric Seesaw without Singlet Neutrinos: Neutrino Masses and Lepton-Flavour Violation
• Low-scale leptogenesis and soft supersymmetry breaking
• On the CP asymmetries in Majorana neutrino decays
• Leptogenesis in the minimal supersymmetric triplet seesaw model
• New Ways to Soft Leptogenesis
• Further Considerations on the CP Asymmetry in Heavy Majorana Neutrino Decays
• Baryogenesis via lepton number violating scalar interactions
• Discovering and Studying Bileptons with e-e- Collisions
• Scale of SU(2)_R symmetry breaking and leptogenesis
• Lower Bounds on Bilepton Processes at e-e- and mu-mu- Colliders

Cited by in corpus (69)

• Leptogenesis
• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• Cosmology and Astrophysics of Minimal Dark Matter
• Flavour physics of leptons and dipole moments
• Leptonic CP violation
• A modified naturalness principle and its experimental tests
• Leptogenesis in the Universe
• Phenomenological Consequences of See-Saw in S4 Based Models
• Asymmetric Inelastic Inert Doublet Dark Matter from Triplet Scalar Leptogenesis
• Flavor effects in leptogenesis
• Probing Leptogenesis
• Phenomenological and Cosmological Aspects of a Minimal GUT Scenario
• Leptogenesis: beyond the minimal type I seesaw scenario
• Sommerfeld corrections to type-II and III leptogenesis
• Is leptogenesis falsifiable at LHC?
• CP violation and Leptogenesis in models with Minimal Lepton Flavour Violation
• Phenomenology of the triplet seesaw mechanism with Gauge and Yukawa mediation of SUSY breaking
• Leptogenesis in the Exceptional Supersymmetric Standard Model: flavour dependent lepton asymmetries
• One-loop renormalization group equations of the neutrino mass matrix in the triplet seesaw model
• Decay of heavy Majorana neutrinos using the full Boltzmann equation including its implications for leptogenesis
• Interplay of type I and type II seesaw contributions to neutrino mass
• Spontaneous leptonic CP violation and nonzero ${\theta }_{13}$
• Unifying darko-lepto-genesis with scalar triplet inflation
• Leptogenesis origin of Dirac gaugino dark matter
• From Dirac neutrino masses to baryonic and dark matter asymmetries
• Scalar triplet flavored leptogenesis: a systematic approach
• Type II Seesaw Leptogenesis
• A new, direct link between the baryon asymmetry and neutrino masses
• Lepton Flavor Violation and Supersymmetric Dirac Leptogenesis
• Leptogenesis in flavor models with type I and II seesaws
• Flavour-Dependent Type II Leptogenesis
• Type II Seesaw Higgs Triplet as the inflaton for Chaotic Inflation and Leptogenesis
• Leptogenesis with a dynamical seesaw scale
• Spontaneous CP Violation in Lepton-sector: a common origin for ${\theta }_{13}$, Dirac CP phase and leptogenesis
• A cosmological pathway to testable leptogenesis
• Right-Handed Sector Leptogenesis
• Analysis of Leptogenesis in Supersymmetric Triplet Seesaw Model
• Explaining the CMS $eejj$ and $e\mathrm{missing}{\mathrm{p}}_{\mathrm{T}}\mathrm{jj}$ excess and leptogenesis in superstring inspired $E_6$ models
• Neutrino Mixing and Leptogenesis in Type-II Seesaw Scenarios with Left-Right Symmetry
• Flavoured CP asymmetries for type II seesaw leptogenesis
• Testing Dirac leptogenesis with the cosmic microwave background and proton decay
• Smooth Hybrid Inflation and Non-Thermal Type II Leptogenesis
• Robust Limits from Upcoming Neutrino Telescopes and Implications on Minimal Dark Matter Models
• Scalar Triplet Flavor Leptogenesis with Dark Matter
• WIMPy Leptogenesis in Non-Standard Cosmologies
• Mirror symmetry: from active and sterile neutrino masses to baryonic and dark matter asymmetries
• Neutrino Mass Seesaw at the Weak Scale, the Baryon Asymmetry, and the LHC
• S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
• Triplet Leptogenesis in Left-Right Symmetric Seesaw Models
• Leptogenesis and low-energy CP violation in a type-II-dominated left-right seesaw model
• An SO(10) \times SO(10)' model for common origin of neutrino masses, ordinary and dark matter-antimatter asymmetries
• Dirac dark matter, dark radiation, and the type-II seesaw mechanism in alternative $U(1{)}_X$ standard model
• Asymmetric long-lived dark matter and leptogenesis from type-III seesaw framework
• Neutrino dark energy and leptogenesis with TeV scale triplets
• The Type II Dirac Seesaw Portal to the mirror sector: Connecting neutrino masses and a solution to the strong CP problem
• Purely Triplet Seesaw and Leptogenesis within Cosmological Bound, Dark Matter and Vacuum Stability
• The role of lepton flavor symmetries in leptogenesis
• See-saw fermion masses in an SO(10) GUT
• Scalar Triplet Leptogenesis with a CP violating phase
• Scalar triplet leptogenesis in the presence of right-handed neutrinos with S3 symmetry
• Revisiting the role of CP-conserving processes in cosmological particle-antiparticle asymmetries
• Cosmic Evolution of Lepton Flavor Charges
• Leptogenesis from low-energy CP violation in minimal left-right symmetric model
• Scalar triplet leptogenesis without right-handed neutrino decoupling
• Sphaleron in the Higgs Triplet Model
• SU(5) unification of two triplet seesaw and leptogenesis with dark matter and vacuum stability
• Baryogenesis via relativistic bubble expansion
• Triplet scalar flavored leptogenesis with spontaneous CP violation
• Leptogenesis with perturbations in type-II and type-III seesaw models