CP violation from charged Higgs bosons in the three Higgs doublet model

Abstract

We demonstrate a new type of cancellation of contributions to the electron and neutron electric dipole moments (EDMs) that occurs in three Higgs doublet models (3HDMs) when CP violation appears in the charged Higgs sector. The cancellation becomes exact when the two physical charged Higgs bosons in the model are degenerate in mass. Depending on the model parameters, degeneracies at the 10\% level are however sufficient to evade current bounds on the electron and neutron EDMs. We demonstrate that viable parameter space remains with both charged Higgs bosons lighter than 500 GeV and large CP-violating phases while also satisfying theoretical constraints from perturbativity and experimental ones from $\bar{B}\to X_s\gamma$ and direct searches.

35 pages, 22 figures. Revised version with a replacement of figures and addition of references

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• CP violating scalar Dark Matter
• Aligned CP-violating Higgs sector canceling the electric dipole moment
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Cited by in corpus (10)

• Prospects of light charged scalars in a three Higgs doublet model with $Z_3$ symmetry
• Current bounds on the Type-Z $Z_3$ three Higgs doublet model
• Slight excess at 130 GeV in search for a charged Higgs boson decaying to a charm quark and a bottom quark at the Large Hadron Collider
• Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications
• Combining Evolutionary Strategies and Novelty Detection to go Beyond the Alignment Limit of the $Z_3$ 3HDM
• Fingerprinting the Type-Z three Higgs doublet models
• CP-Violating 2HDMs Emerging from 3-3-1 Models
• Loop induced $h\to \gamma \gamma ,Z\gamma ,gg$ decays in 3-Higgs doublet models
• Flavor phenomenology of an extended 2HDM with inverse seesaw mechanism
• Computable conditions for order-2 $CP$ symmetry in NHDM potentials