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arXiv · 1311.4704

Gauge invariant Barr-Zee type contributions to fermionic EDMs in the two-Higgs doublet models

Tomohiro Abe·Junji Hisano·Teppei Kitahara·Kohsaku Tobioka
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Abstract

We calculate all gauge invariant Barr-Zee type contributions to fermionic electric dipole moments (EDMs) in the two-Higgs doublet models (2HDM) with softly broken Z2 symmetry. We start by studying the tensor structure of h to VV' part in the Barr-Zee diagrams, and we calculate the effective couplings in a gauge invariant way by using the pinch technique. Then we calculate all Barr-Zee diagrams relevant for electron and neutron EDMs. We make bounds on the parameter space in type-I, type-II, type-X, and type-Y 2HDMs. The electron and neutron EDMs are complementary to each other in discrimination of the 2HDMs. Type-II and type-X 2HDMs are strongly constrained by recent ACME experiment's result, and future experiments of electron and neutron EDMs may search O(10) TeV physics.

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Tomohiro Abe, Junji Hisano, Teppei Kitahara, Kohsaku Tobioka. 2013-11-19. Gauge invariant Barr-Zee type contributions to fermionic EDMs in the two-Higgs doublet models. https://doi.org/10.1007/jhep01(2014)106

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