Quarkonium physics in CMS

The CMS experiment is collecting and analyzing collision data from LHC. In the first few months of LHC operation, the CMS experiment has placed considerable emphasis on quarkonium measurements, profiting from affordable dimuon trigger rates, even with relatively loose trigger requirements. Some preliminary results will show the performance capability of CMS for investigating quarkonium physics in the dimuon channel, particularly in the J/ψ and ϒ mass windows, from pp interactions at .