Measurement of the cross sections for the production of W and Z bosons in association with jets and heavy flavours in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Preliminary measurements are presented of the cross sections for the production of W and Z bosons in association with jets in pp collisions at sqrt(s) = 7 TeV. The measurements are based on 35 pb-1 of data collected with the ATLAS detector at the LHC. The cross sections are measured for the electron and muon decay channels of theW and Z bosons, and for jets reconstructed with the anti-kt clustering algorithm. Jets containing b-hadrons are identified and measured. Inclusive and differential results are presented as a function of jet multiplicity and kinematics. The ratio is shown of the W and Z plus one jet production cross section. The results are compared with leading and next-to-leading order QCD predictions.