CP-odd static electromagnetic properties of the W gauge boson and the t quark via the anomalous tbW coupling
- Instituto de Ciencias Basicas e Ingenieria, Universidad Autonoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 5.5, C. P. 42814, Pachuca, Hgo. (Mexico)
In the framework of the electroweak chiral Lagrangian, the one-loop induced effects of the anomalous tbW coupling, which includes both left- and right-handed complex components, on the static electromagnetic properties of the W boson and the t quark are studied. The attention is focused mainly on the CP-violating electromagnetic properties. It is found that the tbW anomalous coupling can induce both CP-violating moments of the W boson, namely, its electric dipole ({mu}-tilde{sub W}) and magnetic quadrupole (Q-tilde{sub W}) moments. As far as the t quark is concerned, a potentially large electric dipole moment (d{sub t}) can arise due to the anomalous tbW coupling. The most recent bounds on the tbW coupling left- and right-handed parameters from B meson physics lead to the following estimates {mu}-tilde{sub W}{approx}4x10{sup -23}-4x10{sup -22} e{center_dot}cm and Q-tilde{sub W}{approx}10{sup -38}-10{sup -37} e{center_dot}cm{sup 2}, which are 7 and 14 orders of magnitude larger than the standard model (SM) predictions, whereas d{sub t} may be as large as 10{sup -22} e{center_dot}cm, which is about 8 orders of magnitude larger than its SM counterpart.
- OSTI ID:
- 21020254
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 7; Other Information: DOI: 10.1103/PhysRevD.75.073017; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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