Supersymmetric solution to {ital CP} problems
- Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
We analyze the minimal supersymmetric left-right model with nonrenormalizable interactions induced by higher scale physics and study its {ital CP}-violating properties. We show that it (i) solves the strong {ital CP} problem, and (ii) predicts the neutron electric dipole moment well within experimental limits (thus solving the usual SUSY {ital CP} problem). In addition, it automatically conserves {ital R} parity. The key points are that the parity symmetry forces the Yukawa couplings to be Hermitian, while supersymmetry ensures that the scalar potential has a minimum with real Higgs doublet vacuum expectation values. Gluino and {ital B}{minus}{ital L} gaugino masses are automatically real. The observed {ital CP} violation in the kaon system comes, as in the standard model, from the Kobayashi-Maskawa-type phases. These solutions are valid for any value of the right-handed breaking scale {ital M}{sub {ital R}}, as long as the effective theory below {ital M}{sub {ital R}} has only two Higgs doublets that couple fully to fermions (i.e., the theory below {ital M}{sub {ital R}} is MSSM-like.) The potentially dangerous contributions from the SU(2){sub {ital L}} gaugino one-loop diagram as well as from some higher dimensional terms to {bar {Theta}} below {ital M}{sub {ital R}} can be avoided if the left-right symmetry originates from a unified theory such as SO(10) and we discuss how this embedding is achieved for the SO(10) case. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 388470
- Journal Information:
- Physical Review, D, Vol. 54, Issue 9; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
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