  Measurements of differential cross sections are presented for the production
of a Z boson and at least one hadronic jet in proton-proton collisions at
sqrt(s) = 7 TeV, recorded by the CMS detector, using a data sample
corresponding to an integrated luminosity of 4.9 inverse femtobarns. The jet
multiplicity distribution is measured for up to six jets. The differential
cross sections are measured as a function of jet transverse momentum and
pseudorapidity for the four highest transverse momentum jets. The distribution
of the scalar sum of jet transverse momenta is also measured as a function of
the jet multiplicity. The measurements are compared with theoretical
predictions at leading and next-to-leading order in perturbative QCD.
