Interplay of t --> b W Decay and B_q Meson Mixing in Minimal Flavor Violating Models

Understand

Precise measurements of the top quark decay properties at hadron colliders offer interesting new possibilities of testing the standard model.

• At the same time, recent intriguing experimental results concerning CP violation in the B_d and B_s systems have stimulated many studies of physics beyond the standard model.
• We investigate anomalous t W d_j interactions as a possible source of new effects in B_{d,s} - bar B_{d,s} oscillations within a model independent approach based on the assumptions of Minimal Flavor Violation.
• After matching our effective operators onto the low-energy effective Lagrangian describing B_{d,s} meson mixing and evolving it down to the B-mass scale, we extract the preferred ranges of the anomalous t W d_j interactions at the weak scale.