Study of di-boson production with the CMS detector at LHC

The relatively high cross sections and the clean signatures of multi-lepton final states make the and pp → WZ0 → 3ℓ(ℓ ≤ e, μ) processes accessible in early CMS data. The CMS potential for the observation and study of these processes is assessed using fully simulated signal and background Monte Carlo samples. The main systematic effects relevant for cross section measurements with 1 fb-1 and 10 fb-1 of data are addressed. We demonstrate that multiple gauge-boson production in pp collisions at LHC energies can be observed in the early phase of the experiment, with an integrated luminosity of or less. © 2007 IOP Publishing Ltd.