Electron Electric Dipole Moment induced by Octet-Colored Scalars

TL;DR

This paper explores how adding octet-colored scalars to a two Higgs doublet model can generate significant electron electric dipole moments through CP-violating interactions, with implications for new physics searches.

Contribution

It introduces a novel extension with octet-colored scalars that enhances CP violation effects and predicts measurable electric dipole moments.

Findings

Electron EDM can be significantly induced by octet-colored scalars.

Two-loop Barr-Zee diagrams contribute to quark and electron EDMs.

The model predicts EDM values within experimental reach.

Abstract

An appended sector of two octet-colored scalars, each an electroweak doublet, is an interesting extension of the simple two Higgs doublet model motivated by the minimal flavor violation. Their rich CP violating interaction gives rise to a sizable electron electric dipole moment, besides the quark electric dipole moment via the two-loop contribution of Barr-Zee mechanism.