Leptogenesis for Pedestrians

Abstract

During the process of thermal leptogenesis temperature decreases by about one order of magnitude while the baryon asymmetry is generated. We present an analytical description of this process so that the dependence on the neutrino mass parameters becomes transparent. In the case of maximal CP asymmetry all decay and scattering rates in the plasma are determined by the mass M_1 of the decaying heavy Majorana neutrino, the effective light neutrino mass tilde{m}_1 and the absolute mass scale bar{m} of the light neutrinos. In the mass range suggested by neutrino oscillations, m_{sol} \simeq 8*10^{-3} eV \lesssim \tilde{m}_1 \lesssim m_{atm} \simeq 5*10^{-2} eV, leptogenesis is dominated just by decays and inverse decays. The effect of all other scattering processes lies within the theoretical uncertainty of present calculations. The final baryon asymmetry is dominantly produced at a temperature T_B which can be about one order of magnitude below the heavy neutrino mass M_1. We also derive an analytical expression for the upper bound on the light neutrino masses implied by successful leptogenesis.

55 pages, 14 figures included

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• Tri-Resonant Leptogenesis in a Seesaw Extension of the Standard Model
• Primordial Gravitational Waves as Probe of Dark Matter in Interferometer Missions: Fisher Forecast and MCMC
• Neutrino Mass Seesaw at the Weak Scale, the Baryon Asymmetry, and the LHC
• Non equilibrium dynamics of mixing, oscillations and equilibration: a model study
• Flavour effects in gravitational leptogenesis
• Probing flavored regimes of leptogenesis with gravitational waves from cosmic strings
• Importance of generalized $\mu \tau$ symmetry and its CP extension on neutrino mixing and leptogenesis
• Flavor Delta(54) in SU(5) SUSY Model
• Examining leptogenesis with lepton flavor violation and the dark matter abundance
• $B+L$ violation at colliders and new physics
• Predictive $S_4$ flavon model with ${\text{TM}}_1$ mixing and baryogenesis through leptogenesis
• Supersymmetric B-L inflation near the conformal coupling
• Freeze-in Dirac neutrinogenesis: thermal leptonic CP asymmetry
• Dynamical Evolution of Gravitational Leptogenesis
• CP violation in neutrino mass matrix
• Gravitino thermal production revisited and a new cosmological scenario of gauge mediation
• Inflation connected to the origin of $CP$ violation
• Thermal Leptogenesis in the Minimal Gauged $U(1{)}_{L_{\mu }-L_{\tau }}$ Model
• Baryogenesis from leptomesons
• S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
• Scalar-singlet assisted leptogenesis with CP violation from the vacuum
• Leptogenesis and low-energy CP violation in a type-II-dominated left-right seesaw model
• Massive Neutrinos in Cosmology
• New approach to neutrino masses and leptogenesis with Occam's razor
• CMB imprints of high scale non-thermal leptogenesis
• Cosmological Selection of Multi-TeV Supersymmetry
• Inflation and DM phenomenology in a scotogenic model extended with a real singlet scalar
• New Solution for Neutrino Masses and Leptogenesis in Adjoint SU(5)
• Neutrino mass and leptogenesis in a hybrid seesaw model with a spontaneously broken CP
• Axions, WIMPs, proton decay and observable $r$ in $SO(10)$
• Neutrino collective excitations in the Standard Model at high temperature
• Fermion masses, Leptogenesis and Supersymmetric SO(10) Unification
• Axino dark matter in brane world cosmology
• Renormalization group evolution induced leptogenesis in the minimal seesaw model with the trimaximal mixing and mu-tau reflection symmetry
• Annihilating Leptogenesis
• Leptonic CP Violation and Leptogenesis
• CP Violation and Neutrino Masses and Mixings from Quark Mass Hierarchies
• A 3 X 2 texture for neutrino oscillations and leptogenesis
• Low-scale Resonant Leptogenesis in $SU(5)$ GUT with ${\mathcal{T}}_{13}$ Family Symmetry
• Gamma-ray line from radiative decay of gravitino dark matter
• Leptogenesis in a Hybrid Texture Neutrino Mass Model
• Solving the Homogeneous Boltzmann Equation with Arbitrary Scattering Kernel
• Baryogenesis via leptogenesis from quark-lepton symmetry\par and a compact heavy $N_R$ spectrum
• Leptons and Quarks from a Discrete Flavor Symmetry
• Asymmetric long-lived dark matter and leptogenesis from type-III seesaw framework
• Leptogenesis in $\Delta (27)$ with a Universal Texture Zero
• Cosmologically viable gauge mediation
• Thermal and nonthermal dark matters with gravitational neutrino reheating
• Dynamical Matter-Parity Breaking and Gravitino Dark Matter
• Coupling Unification and Dark Matter in a Standard Model Extension with Adjoint Majorana Fermions
• Revisiting the Minimal Nelson-Barr Model
• Leptogenesis in a Left-Right Symmetric Model with double seesaw
• Anarchy and Leptogenesis
• Hubble induced mass after inflation in spectator field models
• Froggatt-Nielsen models with a residual Z_4^R symmetry
• Baryon asymmetry and dark matter from soft leptogenesis
• Thermal relics in cosmology with bulk viscosity
• Nambu-Goldstone Affleck-Dine Baryogenesis
• Purely Triplet Seesaw and Leptogenesis within Cosmological Bound, Dark Matter and Vacuum Stability
• Probing Supersymmetric Leptogenesis with mu --> e gamma
• Cosmological decay of Higgs-like scalars into a fermion channel
• Simiplified textures of the seesaw model for the trimaximal neutrino mixings
• Spontaneous mirror left-right symmetry breaking for leptogenesis parametrized by Majorana neutrino mass matrix
• Systematic approach to Delta L=1 processes in thermal leptogenesis
• Leptogenesis and composite heavy neutrinos with gauge mediated interactions
• The role of lepton flavor symmetries in leptogenesis
• Heavy Dark Matter, Neutrino Masses and Higgs Naturalness from a Strongly Interacting Hidden Sector
• PeV-scale leptogenesis, gravity waves and black holes from a SUSY-breaking phase transition
• Baryogenesis: A Symmetry Breaking in the Primordial Universe Revisited
• Pure Gravity Mediation and Chaotic Inflation in Supergravity
• Search for $CP$-Violating Neutrino Nonstandard Interactions with the NOvA Experiment
• Gravitino Dark Matter in Split Supersymmetry with Bilinear R-Parity Violation
• CP violations in a predictive $A_4$ symmetry model
• Determining the heavy seesaw neutrino mass matrix from low-energy parameters
• Neutrino Mixing and Leptogenesis in a $L_e-L_{\mu }-L_{\tau }$ model
• Pure Gravity Mediation and Spontaneous B-L Breaking from Strong Dynamics
• Seminatural Gauge Mediation from Product Group Unification
• Completing constrained flavor violation: lepton masses, neutrinos and leptogenesis
• Broken $S_{3\mathrm{L}}^{}\times S_{3\mathrm{R}}^{}$ Flavor Symmetry and Leptonic CP Violation
• Double and multiple bangs at tau neutrino telescopes: A novel probe of sphalerons with cosmogenic neutrinos
• Thermal leptogenesis in anisotropic cosmology
• High-Scale SUSY Breaking Models in light of the BICEP2 Result
• $1\leftrightarrow 2$ Processes of a Sterile Neutrino Around Electroweak Scale in the Thermal Plasma
• Mass-derivative relations and unitarity constraints for $CP$ asymmetries at finite temperature
• Resonant leptogenesis with mild degeneracy
• Gravitational Wave Signatures of Gauged Baryon and Lepton Number
• Dark sector production and baryogenesis from not quite black holes
• Leptogenesis and Dark Matter-Nucleon Scattering Cross Section in the SE6SSM
• Double type-II Dirac seesaw accompanied by Dirac fermionic dark matter
• Type-I thermal leptogenesis in $Z_3$-symmetric three Higgs doublet model
• Soft leptogenesis in the NMSSM with a singlet right-handed neutrino superfield
• Texture Zero Neutrino Models and Their Connection with Resonant Leptogenesis
• Common origin of inverse seesaw and baryon asymmetry
• Chaotic Hybrid Inflation with a Gauged B - L
• Accurate renormalization group analyses in neutrino sector
• Leptogenesis and eV scale sterile neutrino
• Thermal leptogenesis in nonextensive cosmology
• Leptogenesis: Theory and Neutrino Masses
• Spectrum of colour sextet scalars in realistic SO(10) GUT
• Unification of the four forces in the Spin(11,1) geometric algebra
• Inflation and Higgs Phenomenology in a Model Unifying the DFSZ Axion with the Majoron
• Neutrino helicity asymmetries in leptogenesis
• Parameterizing Majorana Neutrino Couplings in the Higgs Sector
• Purely flavored leptogenesis from a sudden mass gain of right-handed neutrinos
• Resonant leptogenesis in minimal $U(1{)}_X$ extensions of the Standard Model
• Correlating Mu Parameter and Right-Handed Neutrino Masses in N=1 Supergravity
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• Leptogenesis after superconformal subcritical hybrid inflation
• Neutrino Mass Matrices from Two Zero 3x2 Yukawa Textures and Minimal d=5 Entries
• Low scale leptogenesis under neutrino $\mu$-$\tau$ reflection symmetry
• Low-scale Leptogenesis with Minimal Lepton Flavour Violation
• Calculable Cosmological CP Violation and Resonant Leptogenesis
• Scalar dark matter, Neutrino mass and Leptogenesis in a $\mathrm{U}(1{)}_{\mathrm{B}-\mathrm{L}}$ model
• A dynamical CP source for CKM, PMNS and Leptogenesis
• Minimal Leptogenesis in Brane-inspired Cosmology
• Constraining the SMEFT Extended with Sterile Neutrinos at FCC-ee
• Towards a more complete description of hybrid leptogenesis
• Phenomenology of Baryogenesis from Lepton-Doublet Mixing
• Wash-Out in N_2-dominated leptogenesis
• Neutrino Mixing and Leptogenesis in $\mu -\tau$ Symmetry
• Leptogenesis in an extended seesaw model with $U(1{)}_{B-L}$ symmetry
• Lepton Flavor Violation in Complex SUSY Seesaw Models with Nearly Tribimaximal Mixing
• Interaction rates in cosmology: heavy particle production and scattering
• Neutrinos and the matter-antimatter asymmetry in the Universe
• Leptogenesis Scenarios via Non-Thermally Produced Right-handed Neutrino and Sneutrino in Supersymmetric Seesaw Model
• Can thermal inflation be consistent with baryogenesis in gauge-mediated SUSY breaking models?
• Primordial non-Gaussianity from the Effects of the Standard Model Higgs during Reheating after Inflation
• Minimal inverse seesaw accompanied by Dirac fermionic dark matter
• Low scale leptogenesis in a model with promising $CP$ structure
• Gravitational Wave Spectral Shapes as a probe of Long Lived Right-handed Neutrinos, Leptogenesis and Dark Matter: Global versus Local B-L Cosmic Strings
• Conformal Leptogenesis in Composite Higgs Models
• Ion manipulation from liquid Xe to vacuum: Ba-tagging for a nEXO upgrade and future $0\nu \beta \beta$ experiments
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• Reheating and Leptogenesis after Vector inflation
• Freed Leptogenesis
• Gravitino Production Suppressed by Dynamics of Sgoldstino
• Leptogenesis in automatic Nelson-Barr models
• A split seesaw model with hidden neutrinoless double beta decay but successful leptogenesis
• A common framework for fermion mass hierarchy, leptogenesis and dark matter
• Leptonic $CP$ Violation and Leptogenesis in Minimal Supersymmetric SU(4)${}_c\times$SU(2)${}_L\times$SU(2)${}_R$
• Future neutrino oscillation facilities: physics priorities and open issues
• Leptonic CP and Flavor Violations in SUSY GUT with Right-handed Neutrinos
• Flavoured CP-asymmetry at the effective neutrino mass floor
• 'Searching for a needle in a haystack;' A Ba-tagging approach for an upgraded nEXO experiment
• Insights on the Scale of Leptogenesis from Neutrino Masses and Neutrinoless Double-Beta Decay
• Matter and dark matter asymmetry from a composite Higgs model
• A new leptogenesis scenario parametrized by Dirac neutrino mass matrix
• Gravitational leptogenesis from metric perturbations
• Particular textures of the minimal seesaw model
• A lower bound on the right-handed neutrino mass from wash-in leptogenesis
• Leptogenesis in the presence of exact flavor symmetries
• Leptogenesis with dynamical couplings
• Type-3/2 Seesaw Mechanism
• Renormalization group running triggered tri-resonant leptogenesis within neutrino flavor-symmetry models
• Forbidden neutrinogenesis
• Leptogenesis from a feebly interacting dark matter sector
• TeV Scale Resonant Leptogenesis with triplet Fermion in Connection to Muon $g-2$
• Testable Flavored TeV-scale Resonant Leptogenesis with MeV-GeV Dark Matter in a Neutrinophilic 2HDM
• Leptogenesis and Reheating in Complex Hybrid Inflation
• Leptogenesis implications in models with Abelian family symmetry and one extra real Higgs singlet
• Two-component Dark Matter and low scale Thermal Leptogenesis
• The Neutrino Mass Bound from Leptogenesis Revisited
• Linear seesaw leptogenesis before/after electroweak symmetry breaking
• A Scotogenic Model as a Prototype for Leptogenesis with One Single Gauge Singlet
• CP violation in bilinear R-parity violation and its consequences for the early universe
• Leptogenesis in the $\mu \tau$ basis
• Electromagnetic Leptogenesis -- an EFT-Consistent Analysis via Wilson Coefficients. Part I. Low-Scale, Non-Resonant Regime
• Status and Perspectives of Neutrino Physics
• Standard and Non-Standard Aspects of Neutrino Physics
• Studying gaugino masses in supersymmetric model at future 100 TeV $pp$ collider
• The Electroweak Vacuum Angle at Finite Temperature and Implications for Baryogenesis
• Unified Origin of Dirac Neutrino and Asymmetric Dark Matter Masses via a Dirac-Type Leptogenesis
• Leptogenesis assisted by scalar decays
• Complementarity of the CERN Large Hadron Collider and the $e^{+}{e}^{-}$ International Linear Collider
• Thermal Inflation with Flaton Chemical Potential
• Does thermal leptogenesis in a canonical seesaw rely on initial memory?
• Rescuing leptogenesis in inverse seesaw models with the help of non-Abelian flavor symmetries
• Probing low scale leptogenesis through gravitational wave
• Neutrino masses, matter-antimatter asymmetry, dark matter, and supermassive black hole formation explained with Majorons
• Naturalness in Soft Leptogenesis and Gravitino Mass Bound due to Primordial Black Holes
• Parametrized leptogenesis from linear seesaw
• Asymmetric Mediator in Scotogenic Model
• Asymgenesis
• Origin of neutrino masses, dark matter, leptogenesis, and inflation in a seesaw model with triplets
• Thermal leptogenesis in the presence of helical hypermagnetic fields
• Cosmic Collider Gravitational Waves sourced by Right-handed Neutrino production from Bubbles: Testing Seesaw, Leptogenesis and Dark Matter
• Dark Matter-Driven Low-Scale Leptogenesis via Neutrino Portal
• Probing Leptogenesis and Pre-BBN Universe with Gravitational Waves Spectral Shapes
• Leptogenesis with perturbations in type-II and type-III seesaw models
• Leptogenesis in five-dimensional asymptotic Grand Unification models
• Neutrino Spin Flavor Precession and Leptogenesis
• Experimental Constraints on Seesaw Parameters in the Wigner-like Parametrization
• Exact parametrization of a minimal seesaw model
• Leptogenesis from composite singlets
• Developments in Leptogenesis
• Early Universe hypercharge breaking and neutrino mass generation
• Leptoquarks with Exactly Stable Protons
• The sensitivity of liquid scintillator detectors to CP-violation with atmospheric neutrinos
• Constraints on the neutrino extension of the Standard Model and baryon asymmetry of the Universe
• Leptogenesis in the littlest inverse seesaw model
• Non-resonant leptogenesis in seesaw models with an almost conserved B-L
• Cogenesis of visible and dark matter in a scotogenic model
• Gravitational wave complementarity and impact of NANOGrav data on gravitational leptogenesis: cosmic strings
• A viable supersymmetric model with UV insensitive anomaly mediation
• A singlet scalar assisted $N_2$ Leptogenesis and Pseudo-Scalar Dark Matter
• Constraints on the parameters of the neutrino extension of the Standard Model
• Revisiting R-invariant Direct Gauge Mediation
• Cosmological Probes of Lepton Parity Freeze-in Dark Matter: $\Delta N_{\mathrm{eff}}$ & Gravitational Waves
• Large CP Violation from the Minimum Seesaw Model
• Dilution of axion dark radiation by thermal inflation
• Geometric Baryogenesis with Chiral-Time Equivalence