Speaker
Marco Musich
(INFN Torino (IT))
Description
The mechanism of production of heavy-flavoured mesons, containing b
or c quarks, in association with vector bosons, W or Z, in the Standard
Model is only partially understood. The study of events with one or
two well-identified and isolated leptons accompanied by b-jets or
secondary vertices is therefore crucial to refine the theoretical
calculations in perturbative QCD, as well as validate associated Monte
Carlo techniques. The deep understanding of these processes is furthermore
required by Higgs and BSM analyses with similar final states. Using the
LHC proton-proton collision data collected in 2010 and 2011 at a centre
of mass energy of 7 TeV by the CMS detector, preliminary measurements
of the Z+b(b) cross sections and angular correlations are presented.
Finally, the study of the W+c production rate with respect to the W
charge and W+light jets rates allows to probe the strange quark content
of the proton. These results are also presented.
Author
Arnd Meyer
(Rheinisch-Westfaelische Tech. Hoch. (DE))
