Higgs-mediated electric-dipole moments in the next-to-minimal supersymmetric standard model: An application to electroweak baryogenesis
Abstract
We perform a study on the predictions of electric-dipole moments of neutron, Mercury (Hg), Thallium (Tl), deuteron, and Radium (Ra) in the framework of next-to-minimal supersymmetric standard model with CP-violating parameters in the superpotential and soft-supersymmetry-breaking sector. We confine to the case in which only the physical tree-level CP phase (ϕλ'-ϕκ'), associated with the couplings of the singlet terms in the superpotential and with the vacuum-expectation-values, takes on a nonzero value. We found that the one-loop contributions from neutralinos are mostly small while the two-loop Higgs-mediated contributions of the Barr-Zee type diagrams dominate. We emphasize a scenario motivated by electroweak baryogenesis.
- Publication:
-
Physical Review D
- Pub Date:
- July 2011
- DOI:
- 10.1103/PhysRevD.84.015002
- arXiv:
- arXiv:1102.5679
- Bibcode:
- 2011PhRvD..84a5002C
- Keywords:
-
- 12.60.Jv;
- Supersymmetric models;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 36 pages, 9 figures, to appear in PRD