Speaker
Dr
Roberto Covarelli
(Univ. INFN Perugia)
Description
The analysis of data collected by the CMS experiment in 2010 (equivalent to an integrated luminosity of 40 pb-1) has yielded several physics results concerning the production mechanisms of heavy flavors at the unprecedented center-of-mass energy of 7 TeV.
Recostruction techniques of heavy-flavored particles will be shown, with particular focus on the triggers expressly designed to select them. Measurements of the b-bbar cross section both with jet "b-tagging" techniques and exclusive states, such as B0, B+ and Bs, will be presented, as well as comparisons with theoretical predictions.
Charmonium and bottomonium cross-section measurements will be shown, and, in the J/psi case, the first determinations of the B-decay feed-down fractions and polarization.
