Flavoured Leptogenesis in the CTP Formalism

Abstract

Within the Closed Time Path (CTP) framework, we derive kinetic equations for particle distribution functions that describe leptogenesis in the presence of several lepton flavours. These flavours have different Standard-Model Yukawa couplings, which induce flavour-sensitive scattering processes and thermal dispersion relations. Kinetic equilibrium, which is rapidly established and maintained via gauge interactions, allows to simplify these equations to kinetic equations for the matrix of lepton charge densities. In performing this simplification, we notice that the rapid flavour-blind gauge interactions damp the flavour oscillations of the leptons. Leptogenesis turns out to be in the parametric regime where the flavour oscillations are overdamped and flavour decoherence is mainly induced by flavour sensitive scatterings. We solve the kinetic equations for the lepton number densities numerically and show that they interpolate between the unflavoured and the fully flavoured regimes within the intermediate parametric region, where neither of these limits is applicable.

44 pages, 8 figures

References in corpus (2)

• Quantum Boltzmann Equations and Leptogenesis
• Quantum corrections to leptogenesis from the gradient expansion

Cited by in corpus (93)

• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• Matter and Antimatter in the Universe
• A White Paper on keV Sterile Neutrino Dark Matter
• The Phenomenology of Right Handed Neutrinos
• Dark Matter, Baryogenesis and Neutrino Oscillations from Right Handed Neutrinos
• Sterile Neutrinos as the Origin of Dark and Baryonic Matter
• Neutrino Quantum Kinetics
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• Baryogenesis from the weak scale to the grand unification scale
• Quantum Leptogenesis I
• Leptogenesis from a GeV Seesaw without Mass Degeneracy
• Thermal production of relativistic Majorana neutrinos: Strong enhancement by multiple soft scattering
• Leptogenesis in the Universe
• Leptogenesis from first principles in the resonant regime
• Effective Theory of Resonant Leptogenesis in the Closed-Time-Path Approach
• Thermal right-handed neutrino production rate in the non-relativistic regime
• Kadanoff-Baym Approach to Flavour Mixing and Oscillations in Resonant Leptogenesis
• Oscillating Asymmetric Dark Matter
• Consequences of DM/antiDM Oscillations for Asymmetric WIMP Dark Matter
• Flavor effects in leptogenesis
• The minimal scenario of leptogenesis
• Resonant enhancement in leptogenesis
• Leptogenesis in the two right-handed neutrino model revisited
• Three-Flavoured Non-Resonant Leptogenesis at Intermediate Scales
• Thermal right-handed neutrino production rate in the relativistic regime
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• Scattering Rates For Leptogenesis: Damping of Lepton Flavour Coherence and Production of Singlet Neutrinos
• Why is there more matter than antimatter? Calculational methods for leptogenesis and electroweak baryogenesis
• Baryogenesis from L-violating Higgs-doublet decay in the density-matrix formalism
• Leptogenesis from Oscillations of Heavy Neutrinos with Large Mixing Angles
• Systematic approach to thermal leptogenesis
• Leptogenesis from Low Energy $CP$ Violation
• Flavoured quantum Boltzmann equations from cQPA
• Leptogenesis: The Other Cuts
• The New $\nu$MSM : Radiative Neutrino Masses, keV-Scale Dark Matter and Viable Leptogenesis with sub-TeV New Physics
• The Boltzmann Equation from Quantum Field Theory
• Kubo relations and radiative corrections for lepton number washout
• Perturbative Non-Equilibrium Thermal Field Theory
• Strong Washout Approximation to Resonant Leptogenesis
• Leptogenesis and fermion mass fit in a renormalizable $SO(10)$ model
• Right-Handed Neutrino Production at Finite Temperature: Radiative Corrections, Soft and Collinear Divergences
• Decrypting $SO(10)$-inspired leptogenesis
• Spectator Effects during Leptogenesis in the Strong Washout Regime
• Kadanoff-Baym approach to the thermal resonant leptogenesis
• Higgsogenesis
• Lepton asymmetry from mixing and oscillations
• Finite Width in out-of-Equilibrium Propagators and Kinetic Theory
• Leptogenesis from Soft Supersymmetry Breaking (Soft Leptogenesis)
• Baryon Asymmetry of the Universe without Boltzmann or Kadanoff-Baym
• On finite density effects on cosmic reheating and moduli decay and implications for Dark Matter production
• Hard-Thermal-Loop Corrections in Leptogenesis I: CP-Asymmetries
• On the Role of Quasiparticles and thermal Masses in Nonequilibrium Processes in a Plasma
• Hard-Thermal-Loop Corrections in Leptogenesis II: Solving the Boltzmann Equations
• Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation
• Non-relativistic leptogenesis
• Relativistic and spectator effects in leptogenesis with heavy sterile neutrinos
• Strong thermal leptogenesis and the absolute neutrino mass scale
• Leptogenesis in $SO(10)$ Models with $A_4$ Modular Symmetry
• Baryogenesis via Particle-Antiparticle Oscillations
• Baryogenesis via leptonic CP-violating phase transition
• Coherent Flavour Oscillation and CP Violating Parameter in Thermal Resonant Leptogenesis
• Lepton asymmetry rate from quantum field theory: NLO in the hierarchical limit
• Kinetic equations for sterile neutrinos from thermal fluctuations
• Cuts, Cancellations and the Closed Time Path: The Soft Leptogenesis Example
• Supersymmetric $SO(10)$-inspired leptogenesis and a new $N_2$-dominated scenario
• Leptogenesis from Additional Higgs Doublets
• Perturbative Non-Equilibrium Thermal Field Theory to all Orders in Gradient Expansion
• Baryogenesis from Mixing of Lepton Doublets
• From QFT to Boltzmann: Freeze-in in the presence of oscillating condensates
• Leptogenesis and the Higgs Portal
• Tachyonic production of dark relics: a non-perturbative quantum study
• Flavour mixing transport theory and resonant leptogenesis
• Leptogenesis in crossing and runaway regimes
• Leptogenesis in models with keV sterile neutrino dark matter
• Dissipation of oscillating scalar backgrounds in an FLRW universe
• Quantum transport and the phase space structure of the Wightman functions
• Nonthermal $CP$ violation in soft leptogenesis
• Flavour effects in Resonant Leptogenesis from semi-classical and Kadanoff-Baym approaches
• Systematic approach to Delta L=1 processes in thermal leptogenesis
• Leptogenesis: Theory and Neutrino Masses
• Fate of homogeneous ${\mathbb{Z}}_2$-symmetric scalar condensates
• Cosmic Evolution of Lepton Flavor Charges
• Phenomenology of Baryogenesis from Lepton-Doublet Mixing
• Sterile neutrino rates for general $M$, $T$, $\mu$, $k$: review of a theoretical framework
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• Forbidden neutrinogenesis
• A Scotogenic Model as a Prototype for Leptogenesis with One Single Gauge Singlet
• The Neutrino Mass Bound from Leptogenesis Revisited
• Quasiparticles in Leptogenesis - A hard-thermal-loop study
• Developments in Leptogenesis
• How many new particles do we need after the Higgs boson?
• Flavour always matters in scalar triplet leptogenesis
• Beyond the Standard Model with leptogenesis and neutrino data