$B_s \rightarrow J/\psi \phi$ yields

Using the set of cuts derived from optimization and requiring that at least one of the $J/\psi$ legs matches a muon track (a stub) reconstructed in the muon detectors CMU,CMP or CMX we obtain our final $B_s$ invariant mass distribution. We extract the raw yields fitting them with a single gaussian for the signal and an exponential function to model the combinatorial and partially reconstructed B's background. The mass distributions together with the fit result are shown in Fig. 3 and 4 for Scenario A (ScA) and LOWPT (LOW) respectively. We find $N_{ScA}(\psi\phi) = 69 \pm 10$ and $N_{LOW}(\psi\phi) = 8.5 \pm 4.3$. We take into account the muon acceptance and reconstruction efficiency measured in an independent sample of inclusive $J/\psi$. We obtain, then, the following corrected yields for $B_s \rightarrow J/\psi \phi$ mode:

$N_{ScA}^{corr}(\psi\phi) = 75 \pm 11$
$N_{LOW}^{corr}(\psi\phi) = 12.4 \pm 5.6$