CP-odd static electromagnetic properties of the W gauge boson and the t quark via the anomalous tbW coupling

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 (μ-tildeW) and magnetic quadrupole (Q-tildeW) moments. As far as the t quark is concerned, a potentially large electric dipole moment (dt) 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 μ-tildeW∼4x10-23-4x10-22 e·cm and Q-tildeW∼10-38-10-37 e·cm2, which are 7 and 14 orders of magnitude larger than the standard model (SM) predictions, whereas dt may be as large as 10-22 e·cm, which is about 8 orders of magnitude larger than its SM counterpart