Neutron and electron electric dipole moments in supersymmetric theories

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.3025· OSTI ID:7012447

Kizukuri, Y ^[1]; Oshimo, N ^[2]

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1. Department of Physics, Tokai University, 1117 Kita-Kaname, Hiratsuka 259-12 (Japan) International Center for Theoretical Physics, 34100 Trieste (Italy)
2. Grupo Teorico das Altas Energias, Av. Prof. Gama Pinto, 2, 1699 Lisboa Codex (Portugal)

The electric dipole moments (EDMs) of the neutron and the electron in the supersymmetric standard models are discussed in detail taking systematically all the one-loop contributions into account. In the framework of grand unified theories coupled to {ital N}=1 supergravity, the contribution from the chargino-loop diagram is larger than those from the gluino- and/or neutralino-loop diagrams in wide ranges of the supersymmetric parameter space. We assume that {ital CP}-violating phases of the basic parameters are not suppressed in an unnatural way. The experimental limits of the EDMs could give constraints on the values of the supersymmetric mass parameters. From the neutron EDM, the lower bounds of {similar to}1 TeV are obtained for the squark masses, whereas the masses of {similar to}100 GeV are allowed for the charginos and the neutralinos. The electron EDM similarly gives the lower bounds of {similar to}1 TeV on the slepton masses.

• OSTI ID: 7012447
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120* -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662210 -- Specific Theories & Interaction Models
662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
COUPLING CONSTANTS
CP INVARIANCE
DIPOLE MOMENTS
ELECTRIC DIPOLE MOMENTS
ELECTRIC MOMENTS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
INVARIANCE PRINCIPLES
LEPTONS
MASS
MATHEMATICAL MODELS
NEUTRONS
NUCLEONS
PARTICLE MODELS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARKS
STANDARD MODEL
SUPERGRAVITY
SUPERSYMMETRY
SYMMETRY
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES