Precision Higgs Constraints in U(1) Extensions of the Standard Model with a Light Z'-Boson

Zoltán Péli, Zoltán Trócsányi

Anomaly free $U(1)$ extensions of the standard model (SM) predict a new neutral gauge boson $Z^{\prime }$. When the $Z^{\prime }$ obtains its mass from the spontaneous breaking of the new $U(1)$ sym…