Jet production in association with vector bosons

Abstract

We present measurements with the CMS detector of the associated production of vector bosons (W and Z) and hadronic jets in proton proton collision at √ s = 7 TeV at the LHC. We focus in particular on two measurements: the production rate of jets in association with either a W or a Z boson, decaying to final states with electrons and muons, as measured on data collected in 2010 for an integrated luminosity of 36 pb −1 ; and the measurement of angular correlations and event shapes in events with a Z boson and at least one hadronic jets, on data collected in 2011 for an integrated luminosity of 5 fb −1 . Data are compared to the predictions of perturbative QCD, in particular to Monte Carlo models that combine consistently leading order multi-leg matrix elements and parton shower.