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CMS_2016_I1491953

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Differential cross sections for a W boson produced in association with jets are measured in a data sample of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 inverse femtobarns. The W bosons are identified through their decay into a muon and a neutrino. The cross sections are reported as functions of jet multiplicity, jet transverse momenta, and the scalar sum of jet transverse momenta (HT) for different jet multiplicities. Distributions of the angular correlations between the jets and the muon are examined, as well as the average number of jets as a function of HT and as a function of angular variables. The cross sections are measured in the fiducial region defined by a muon with pT>25 GeV and pseudorapidity |η|<2.1, and by a transverse mass between the muon and the missing transverse energy MT>50 GeV. Jets are reconstructed using the anti-kT algorithm with a distance parameter R = 0.5, and only jets with pT>30 GeV, |η|<2.4, and a separation of ΔR>0.5 from the muon are considered.

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