Dear LHCb coleagues,
Indeed a major step. Given the size of teh data sample and the statistical relevance and earlier limits, I assume that the present result is in line with the Standard Model. If so a pity, but you can not command Nature and the qork behind this measurement is independent of whether the results is compatible or incompatible with the Standard Model. But I am sureall of you are eagerly awaiting an SM incompatible result!.
Once again: congratulations with a measurement of order one in a billion!
Best regards, Frank
On Mon, Nov 12, 2012 at 9:48 AM, Marcel Merk marcel.merk@nikhef.nl wrote:
Dear friends,
This morning a preprint was submitted to the arXiv with first (3.5 sigma) evidence of the decay Bs->mumu as well as a first determination of the branching ratio. I am particularly proud of this result since our Nikhef group has made central contributions to:
- Theory: together with our Nikhef theory friends we addressed the time
integrated vs "t=0" BR.
- fs/fd fragmentation: a leading systematic input for the Bs->mumu BR
extraction
- the selection and background study for Bs->mumu.
Congratulations to all people involved!
Cheers,
- Marcel