Studies of the decay
arXiv:1205.3411
Abstract
The decay mode allows for one of the theoretically cleanest time dependent measurements of the CKM angle . This contribution reports the world best branching fraction of this decay relative to the Cabibbo--favoured mode based on data sample of 0.37 proton--proton collisions at TeV collected with the LHCb detector in 2011, resulting in $BR(\BsDK) = (1.90 \pm 0.12^{stat} \pm {0.13^{syst}^{+0.12}_{-0.14}}^{f_{s}/f_{d}})\times 10^{-4}$.
4 pages, 3 figures, presented at Recontres de Moriond EW 2012