Measurement of J/psi, Upsilon and b-hadron production in proton-proton collisions at sqrt(s) = 7 TeV with the CMS experiment

The CMS experiment is collecting data from LHC proton-proton collisions, with high performance. In the first months of LHC operation, CMS has placed considerable emphasis on heavy flavor and quarkonium physics, exploring in particular low-threshold muon triggers with affordable event rates. The first 300 $\rm{nb}^{-1}$ dataset accumulated by the experiment has been thoroughly explored to establish the overall good performance of the detector, and extract initial physics results. The first measurements of the J/$\psi$, $\Upsilon$ and $b$ hadron production cross sections in proton-proton collisions at 7 TeV are presented in this paper. Comparisons with model predictions are also shown.