The WZ production cross section in proton–proton collisions at s=13 TeV is measured with the CMS experiment at the LHC using a data sample corresponding to an integrated luminosity of 2.3 fb −1 . The measurement is performed in the leptonic decay modes WZ→ℓνℓ′ℓ′ , where ℓ,ℓ′=e,μ . The measured cross section for the range 60