The production of vector bosons (Z and W) in association with jets provides a stringent test of perturbative QCD and is a background process in searches for new physics. Differential cross-section measurements of vector bosons produced in association with jets and heavy flavor quarks in protonproton collisions at center of mass energies of 8 TeV and 13 TeV in the CMS experiment at the LHC are presented. The measurements are compared to next-to-leading order calculations and event simulations

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... t devise matrix element calculations interfaced with parton showers. Abstract. The production of vector bosons (Z and W) in association with jets provides a stringent test of perturbative QCD and is a background process in searches for new physics. Differential cross section measurements of vector bosons produced in association with jets and heavy flavour quarks in proton-proton collisions at center of mass energies of 8 TeV and 13 TeV in the CMS experiment at the LHC are presented. The measurements are compared to next-to-leading order calculations and event simulations that devise matrix element calculations interfaced with parton showers. Z + jets differential cross sections The differential cross sections of Z boson production in association with jets, in the dimuon and dielectron decay channels [2] and in the dimuon decay channel for an extended jet rapidity region [3],