Magnitude of Higgs-boson-exchange [ital CP] violation in two-doublet models with large tan[beta]

Journal Article · Mon Mar 01 04:00:00 EST 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.2025· OSTI ID:6900116

Barr, S M ^[1]

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1. Bartol Research Institute, University of Delaware, Newark, Delaware 19716 (United States)

[ital CP] violation in neutral Higgs-boson exchange is studied in two-doublet models in an expansion in (1/tan[sup 2][beta]). The typical magnitude of various [ital CP]-violating quantities is found for large tan[beta]. In particular the electric dipole moment (EDM) of the electron and the coefficient [ital c][sub [ital S]] of the [ital CP]-violating electron-nucleon scalar-pseudoscalar operator are examined and it is found that in a simple class of two-doublet models [ital c][sub [ital S]]/[ital d][sub [ital e]] is typically [ital O](tan[sup 2][beta]). Therefore [ital c][sub [ital S]] is more important than [ital d][sub [ital e]] for the EDM's of diamagnetic atoms and molecules (Hg, Xe, TlF) typically if tan[beta][approx gt]5, and for paramagnetic atoms (Cs, Tl) if tan[beta][approx gt]15. The dependence on tan[beta] of the various contributions to the neutron EDM including the Weinberg three-gluon operator, and the dependence on tan[beta] of the top-quark EDM are also discussed. Supersymmetric and three-doublet models are also considered.

• OSTI ID: 6900116
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:5; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

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