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We look at anomalous interactions of the  Wtb  vertex. In case of the scenarios, when two of the four anomalous couplings can have non-SM values, we obtain constraints from three processes involving B-decays:  B d , s   −  B  −   d , s   oscillations, the decay  B  →  X s γ  and the decay  B  →  X s   ℓ  +  ℓ  − . We only consider scenarios when two of the four anomalous couplings are allowed to have values different from thosein the Standard Model. We then compare our results with constraints from the t-channel single top quarkproduction cross section from [1], which were obtained for the same scenarios.

Combining direct and indirect constraints on anomalous Wtb couplings