Electric Dipole Moments in the CP-violating Generational Three-Higgs-Doublet Model
Abstract
Motivated by the Yukawa interactions in the CP-violating Generational Three-Higgs-Doublet Model (G3HDM), we investigate the electric dipole moments (EDMs) of the b quark, c quark, electron, neutron, and mercury atom, imposing constraints from the observed 125 GeV Higgs signals, flavor physics, and rare B-meson decays. We find that the b quark, neutron, and mercury EDMs are predominantly controlled by top-enhanced charged-Higgs amplitudes, whose internal cancellations are generally weak. Meanwhile, pronounced pairwise cancellations between nearly degenerate neutral Higgs states occur in the c quark, electron, neutron, and mercury EDMs. Using degenerate perturbation theory, we show that these cancellations originate from approximate relations among the neutral-Higgs mixing-matrix elements, which enforce the anti-alignment of the corresponding CP-odd coupling invariants.
Related
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BibTeX
@misc{ma2026electric,
title = {{Electric Dipole Moments in the CP-violating Generational Three-Higgs-Doublet Model}},
author = {Hao-Ran Ma and Ti-Bin Hou and Jin-Lei Yang and Tai-Fu Feng},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.00916},
eprint = {2609.00916},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.00916},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Electric Dipole Moments in the CP-violating Generational Three-Higgs-Doublet Model
AU - Hao-Ran Ma
AU - Ti-Bin Hou
AU - Jin-Lei Yang
AU - Tai-Fu Feng
PY - 2026
DA - 2026/09/03
PB - arXiv
DO - 10.48550/arxiv.2609.00916
UR - https://arxiv.org/abs/2609.00916
AB - Motivated by the Yukawa interactions in the CP-violating Generational Three-Higgs-Doublet Model (G3HDM), we investigate the electric dipole moments (EDMs) of the b quark, c quark, electron, neutron, and mercury atom, imposing constraints from the observed 125 GeV Higgs signals, flavor physics, and rare B-meson decays. We find that the b quark, neutron, and mercury EDMs are predominantly controlled by top-enhanced charged-Higgs amplitudes, whose internal cancellations are generally weak. Meanwhile, pronounced pairwise cancellations between nearly degenerate neutral Higgs states occur in the c quark, electron, neutron, and mercury EDMs. Using degenerate perturbation theory, we show that these cancellations originate from approximate relations among the neutral-Higgs mixing-matrix elements, which enforce the anti-alignment of the corresponding CP-odd coupling invariants.
ER -