Phenomenology of the B-3L_τ gauge boson

Abstract

Assuming the existence of a gauge boson X which couples to B-3L_τ, we discuss the present experimental constraints on g_X and m_X from Z → l⁺l^- and Z → f̅ fX(f=q,ν_τ,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.