Abstract
Nonstandard CP violation in the Higgs sector can play an essential role in electroweak baryogenesis. We calculate the full two-loop matching conditions of the standard model, with Higgs Yukawa couplings to light quarks modified to include arbitrary CPviolating phases, onto an effective Lagrangian comprising CP-odd electric and chromoelectric light-quark (up, down, and strange) dipole operators. We find large isospin-breaking contributions of the electroweak diagrams. Using these results, we obtain significant constraints on the phases of the light-quark Yukawas from experimental bounds on the neutron and mercury electric dipole moments.
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Brod, J., Skodras, D. Electric dipole moment constraints on CP-violating light-quark Yukawas. J. High Energ. Phys. 2019, 233 (2019). https://doi.org/10.1007/JHEP01(2019)233
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DOI: https://doi.org/10.1007/JHEP01(2019)233