Flavor changing Z' couplings at the LHC

Understand

Models with a non-universal Z' exhibit in general flavor changing neutral currents (FCNC) at tree-level.

• When the Z' couplings favor the third generation, flavor changing transitions of the form Z'tc and Z'tu could be large enough to be observable at the LHC.
• In this paper we explore this possibility using the associated production of a single top-quark with the Z' and find that integrated luminosities of a few hundred fb$^{-1}$ are necessary to probe the interesting region of parameter space.