https://doi.org/10.1140/epjc/s10052-007-0457-6
Regular Article - Theoretical Physics
Chromomagnetic dipole moment of the top quark revisited
1
Departamento de Física, Universidad Nacional, Bogotá, Colombia
2
Departamento de Física, Cinvestav – IPN, Av. IPN No. 2508, Mérida, Mexico
3
Departamento de Física, Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia
* e-mail: remartinezm@yahoo.com
Received:
17
June
2007
Revised:
4
September
2007
Published online:
13
November
2007
We study the complete one-loop contributions to the chromagnetic dipole moment Δκ of the top quark in the standard model, two Higgs doublet models, topcolor assisted technicolor models, 331 models and extended models with a single extra dimension. We find that the SM predicts Δκ=-0.056 and the predictions of the other models are also consistent with the constraints imposed on Δκ by low-energy precision measurements.
© Springer-Verlag , 2008
