The Higgs decay to a pair of b quarks is the strongest expected decay mode for a wide range of model scenarios and parameters. However, the huge background from QCD multi-jet production makes the analysis of this channel very challenging. Our group has proposed and implemented a dedicated trigger for CMS which allowed recording of a large number of candidates in both the 7 TeV and 8 TeV data-taking periods.
With the 7 TeV data alone, we have established the first measurement of this kind at the LHC, and highest sensitivity for the super-symmetric parameter tan β is achieved in this channel. Analysis of the 8 TeV data is still in progress.