Z' indication from new APV data in Cesium and searches at linear   colliders
  New 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. 
R. Casalbuoni, S. De Curtis, D. Dominici, R. Gatto and S. Riemann