Electric dipole moments in the MSSM at large tanβ

2003/11/24 by D. Demir, Durmus Demir, Oleg Lebedev +3 · 5 citations
Physics and Astronomy · #CP violation #Dark Matter and Cosmic Phenomena #Dipole #Electric dipole moment #Electron #Fermion #Higgs boson #Minimal Supersymmetric Standard Model #Neutrino Physics Research #Neutron #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #Quark #hep-ph

paper · pdf · doi:10.1016/j.nuclphysb.2003.12.026

published as Nucl.Phys.B680:339-374,2004 · 39 pages, 17 figures

arxiv created 2003/11/24 · openalex publication_date 2004/01/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Within the minimal supersymmetric standard model (MSSM), the large tan(beta) regime can lead to important modifications in the pattern of CP-violating sources contributing to low energy electric dipole moments (EDMs). In particular, four-fermion CP-violating interactions induced by Higgs exchange should be accounted for alongside the constituent EDMs of quarks and electrons. To this end, we present a comprehensive analysis of three low energy EDM observables - namely the EDMs of thallium, mercury and the neutron - at large tan(beta), in terms of one- and two-loop contributions to the constituent EDMs and four-fermion interactions. We concentrate on the constrained MSSM as well as the MSSM with non-universal Higgs masses, and include the CP-violating phases of mu and A. Our results indicate that the atomic EDMs receive significant corrections from four-fermion operators, especially when Im(A) is the only CP-violating source, whereas the neutron EDM remains relatively insensitive to these effects. As a consequence, in a large portion of the parameter space, one cannot infer a separate bound on the electron EDM via the experimental constraint on the thallium EDM. Furthermore, we find that the electron EDM can be greatly reduced due to the destructive interference of one- and two-loop contributions with the latter being dominated by virtual staus.

Citations

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• Yukawa coupling unification in supersymmetric models
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Cited by

• The Electric Dipole Moment of the electron in the decoupling limit of the aligned Two-Higgs Doublet Model
• Electric dipole moments in the MSSM reloaded
• CKM benchmarks for electron electric dipole moment experiments
• Desperately seeking supersymmetry (SUSY)
• Phenomenological tests of the Two-Higgs-Doublet Model with MFV and flavour-blind phases