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A precise electron EDM constraint on CP-odd heavy-quark Yukawas

Brod, Joachim·Polonsky, Zachary·Stamou, Emmanuel
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Abstract

CP-odd Higgs couplings to bottom and charm quarks arise in many extensions of the standard model and are of potential interest for electroweak baryogenesis. These couplings induce a contribution to the electron EDM. The experimental limit on the latter then leads to a strong bound on the CP-odd Higgs couplings. We point out that this bound receives large QCD corrections, even though it arises from a leptonic observable. We calculate the contribution of CP-odd Higgs couplings to the bottom and charm quarks in renormalisation-group improved perturbation theory at next-to-leading order in the strong interaction, thereby reducing the uncertainty to a few percent.

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDSCP ViolationCavity QEDElectric Dipole MomentsElementary Particles, Quantum Field TheoryHiggs PropertiesParticle PhysicsPhysicsQuantum Electrodynamics, Relativistic and Many-body CalculationsRare variantsSuperheavy elements

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Brod, Joachim, Polonsky, Zachary, Stamou, Emmanuel. 2024-06-14. A precise electron EDM constraint on CP-odd heavy-quark Yukawas. https://doi.org/10.1007/jhep06(2024)091

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