Particle Currents in a Space-Time dependent and CP-violating Higgs Background: a Field Theory Approach

Details Particle Currents in a Space-Time dependent and CP-violating Higgs Background: a Field Theory Approach Particle Currents in a Space-Time dependent and CP-violating Higgs Background: a Field Theory Approach

1995-06-09

arxiv.org/abs/hep-ph/9506278v2

Phys.Rev. D53 (1996) 4668-4679

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, LaTeX file, uses epsf.sty. 4 figures available as a compressed .eps

Scientific paper

10.1103/PhysRevD.53.4668

Motivated by cosmological applications like electroweak baryogenesis, we develop a field theoretic approach to the computation of particle currents on a space-time dependent and CP-violating Higgs background. We consider the Standard Model model with two Higgs doublets and CP violation in the scalar sector, and compute both fermionic and Higgs currents by means of an expansion in the background fields. We discuss the gauge dependence of the results and the renormalization of the current operators, showing that in the limit of local equilibrium, no extra renormalization conditions are needed in order to specify the system completely.

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