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[en] The potential of the Large Hadron Collider (LHC) for searches for effects associated with Z−Z′ mixing in the hadroproduction of W±-boson pairs is studied. The results of our numerical analysis are presented in the form of constraints obtained for the Z−Z′ mixing angle and the Z′-boson mass from the semileptonic channel of W±-boson decay, pp → WW → lνjj + X (l = e or μ), at nominal collider energy and integrated luminosity ( = 14 TeV and Lint = 100 fb−1). The process of double W±-boson production was found to be highly sensitive to the Z−Z′ mixing angle [|ϕ| ~ O(10−3)]. Owing to this, the present-day constraints on this angle can be either improved or reproduced, depending on the choice of model. It was also shown that, upon tripling the LHC luminosity, it will become possible not only to improve the current constraints on the Z−Z′ mixing angle for all Z′ models being considered but also to reach a sensitivity level higher than that of the future lepton collider also known as International Linear Collider or ILC (0.5 TeV).