Testing the handedness of a heavy W′ at future hadron colliders

We show that the associated production pp→W′W and the rare decay pp→W′→l̄lW are useful tests of W′ couplings to fermions at future hadron colliders. For MW′∼(1-3) TeV they would allow a clean determination on whether the W′ couples to V-A or V+A currents. As an illustration a model in which the W′± couples only to V-A currents is contrasted with the left-right-symmetric models which involve V+A currents.