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.
Keywords
Cite
@article{arxiv.1304.1719,
title = {Systematic approach to Delta L=1 processes in thermal leptogenesis},
author = {T. Frossard and A. Kartavtsev and D. Mitrouskas},
journal= {arXiv preprint arXiv:1304.1719},
year = {2015}
}
Comments
16 pages, 13 figures