Electric dipole moment constraints on CP-violating light-quark Yukawas
High Energy Physics - Phenomenology
2019-02-20 v3
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 CP-violating 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.
Keywords
Cite
@article{arxiv.1811.05480,
title = {Electric dipole moment constraints on CP-violating light-quark Yukawas},
author = {Joachim Brod and Dimitrios Skodras},
journal= {arXiv preprint arXiv:1811.05480},
year = {2019}
}
Comments
14 pages, 4 figures; corrected typographical errors, updated numerics, version as published in JHEP