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Signatures with an electroweak vector boson and many jets play a crucial roleat the Large Hadron Collider, both in the measurement of Standard-Modelparameters and in searches for new physics. Precise predictions for thesemulti-scale processes are therefore indispensable. We present next-to-leadingorder QCD predictions for $W^\pm/Z$+jets at $\sqrt{s}=13$ TeV, including up tofive/four jets in the final state. All production channels are included andleptonic decays of the vector bosons are considered at the amplitude level. Weassess theoretical uncertainties arising from renormalization- andfactorization-scale dependence by considering fixed-order dynamical scalesbased on the $H_{\rm T}$ variable as well as on the MiNLO procedure. We alsoexplore uncertainties associated to different choices of parton-distributionfunctions. We provide event samples that can be explored through publiclyavailable $n$-tuple sets, generated with BlackHat in combination with SHERPA.

Weak Vector Boson Production with Many Jets at the LHC $\sqrt{s}= 13$ TeV