  The single top quark final state provides sensitivity to new heavy resonances
produced in proton-proton collisions at the Large Hadron Collider.
Particularly, the single top plus quark final state appears in models with
heavy charged bosons or scalars, or in models with flavor-changing neutral
currents involving the top quark. The cross sections and final state kinematics
distinguish such models from each other and from standard model backgrounds.
Several models of resonances decaying to a single top quark final state are
presented and their phenomenology is discussed.
