科研之友
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摘要
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 nonequilibrium 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.
- 出版日期2013-6-3
