Systematic approach to Delta L=1 processes in thermal leptogenesis

Abstract

In this work we study the contribution to leptogenesis from Delta L=1 decay and scattering processes mediated by the Higgs with quarks in the initial and final states using the formalism of non-equilibrium quantum field theory. Starting from fundamental equations for correlators of the quantum fields we derive quantum-corrected Boltzmann and rate equations for the total lepton asymmetry improved in that they include quantum-statistical effects and medium corrections to the quasiparticle properties. To compute the collision term we take into account one- and two-loop contributions to the lepton self-energy and use the extended quasiparticle approximation for the Higgs two-point function. The resulting CP-violating and washout reaction densities are numerically compared to the conventional ones.

16 pages, 13 figures

References in corpus (8)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Leptogenesis
• Full Boltzmann equations for leptogenesis including scattering
• Medium corrections to the CP-violating parameter in leptogenesis
• Systematic approach to thermal leptogenesis
• Leptogenesis: The Other Cuts
• Right-Handed Neutrino Production at Finite Temperature: Radiative Corrections, Soft and Collinear Divergences

Cited by in corpus (6)

• The Phenomenology of Right Handed Neutrinos
• Three-Flavoured Non-Resonant Leptogenesis at Intermediate Scales
• Leptogenesis from Low Energy $CP$ Violation
• Kadanoff-Baym approach to the thermal resonant leptogenesis
• Flavour mixing transport theory and resonant leptogenesis
• Testable Flavored TeV-scale Resonant Leptogenesis with MeV-GeV Dark Matter in a Neutrinophilic 2HDM