Dear friends,<div><br></div><div>This morning a preprint was submitted to the arXiv with first (3.5 sigma) evidence of the decay Bs-&gt;mumu</div><div>as well as a  first determination of the branching ratio.</div><div>I am particularly proud of this result since our Nikhef group has made central contributions to:</div>
<div>* Theory: together with our Nikhef theory friends we addressed the time integrated vs &quot;t=0&quot; BR.</div><div>* fs/fd fragmentation: a leading systematic input for the Bs-&gt;mumu BR extraction </div><div>* the selection and background study for Bs-&gt;mumu.</div>
<div>Congratulations to all people involved!</div><div><br></div><div>Cheers,</div><div>- Marcel</div>