Phenomenology of the B-3Lτ gauge boson

Assuming the existence of a gauge boson X which couples to B-3Lτ, we discuss the present experimental constraints on gX and mX from Z→l+l- and Z→ bar ffX(f=q,ντ,τ). We also discuss the discovery potential of X at hadron colliders through its decay into τ+τ- pairs. In the scenario where all three charged leptons (and their neutrinos) mix, lepton flavor nonconservation through X becomes possible and provides another experimental probe into this hypothesis. copyright 1998 The American Physical Society