  Discovery potentials for extra neutral interactions at the Large Hadron
Collider in forthcoming experiments are analyzed in Drell-Yan. For this purpose
we use high precision next-to-next-to-leading order (NNLO) determination of the
mass invarian distributions and of the total cross sections in the kinematic
region around 1 TeV. In this region we explore the possibility to make a
preliminary distinction between different anomaly-free extentions of the
Standard Model.
