CERN Accelerating science

CMS Note
Report number	CMS-CR-2010-250
Title	Measurement of J/psi, Upsilon and b-hadron production in proton-proton collisions at sqrt(s) = 7 TeV with the CMS experiment
Author(s)	Leonardo, Nuno (Purdue U.)
Collaboration	CMS Collaboration
Imprint	21 Nov 2010. - 5 p.
Presented at	35th International Conference on High Energy Physics, Paris, France, 22 - 28 Jul 2010
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	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.