Top quark electric dipole moment in a minimal supersymmetric standard model extension with vectorlike multiplets

Journal Article · Wed Sep 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.055001· OSTI ID:21421053

Ibrahim, Tarek ^[1]; Nath, Pran ^[2]

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1. Department of Physics, Faculty of Science, University of Alexandria, Alexandria (Egypt)
2. Department of Physics, Northeastern University, Boston, Massachusetts 02115 (United States)

The electric dipole moment (EDM) of the top quark is calculated in a model with a vector like multiplet which mixes with the third generation in an extension of the minimal supersymmetric standard model. Such mixings allow for new CP violating phases. Including these new CP phases, the EDM of the top in this class of models is computed. The top EDM arises from loops involving the exchange of the W, the Z as well as from the exchange involving the charginos, the neutralinos, the gluino, and the vector like multiplet and their superpartners. The analysis of the EDM of the top is more complicated than for the light quarks because the mass of the external fermion, in this case the top quark mass cannot be ignored relative to the masses inside the loops. A numerical analysis is presented and it is shown that the top EDM could be close to 10{sup -19} ecm consistent with the current limits on the EDM of the electron, the neutron and on atomic EDMs. A top EDM of size 10{sup -19} ecm could be accessible in collider experiments such as the International Linear Collider.

• OSTI ID: 21421053
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevD.82.055001; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPUTERIZED SIMULATION
CP INVARIANCE
D QUARKS
ELECTRIC DIPOLE MOMENTS
ELECTRONS
LINEAR COLLIDERS
MASS
MIXING
NEUTRONS
NUMERICAL ANALYSIS
STANDARD MODEL
SUPERSYMMETRY
T QUARKS
U QUARKS
ACCELERATORS
BARYONS
DIPOLE MOMENTS
ELECTRIC MOMENTS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
INVARIANCE PRINCIPLES
LEPTONS
LINEAR ACCELERATORS
MATHEMATICAL MODELS
MATHEMATICS
NUCLEONS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARKS
SIMULATION
SYMMETRY
TOP PARTICLES
UNIFIED GAUGE MODELS