2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39332New data on parity violation in atomic cesium can be explained by a new neutral vector boson almost unmixed with Z, with a mass in the TeV range and sizeable couplings to the fermions. The properties of such additional Z' can be investigated at future linear colliders.10 pages, 6 figures, Proceedings of the Second ECFA/DESY Study on Physics and Detectors for a Linear Electron - Positron ColliderHigh Energy Physics - Phenomenologytext