  Measurements are reported of differential cross sections for the production
of a W boson, which decays into a muon and a neutrino, in association with
jets, as a function of several variables, including the transverse momenta (pt)
and pseudorapidities of the four leading jets, the scalar sum of jet transverse
momenta (HT), and the difference in azimuthal angle between the directions of
each jet and the muon. The data sample of pp collisions at a centre-of-mass
energy of 7 TeV was collected with the CMS detector at the LHC and corresponds
to an integrated luminosity of 5.0 inverse femtobarns. The measured cross
sections are compared to predictions from Monte Carlo generators, MADGRAPH +
PYTHIA and SHERPA, and to next-to-leading-order calculations from BLACKHAT +
SHERPA. The differential cross sections are found to be in agreement with the
predictions, apart from the pt distributions of the leading jets at high pt
values, the distributions of the HT at high-HT and low jet multiplicity, and
the distribution of the difference in azimuthal angle between the leading jet
and the muon at low values.
