  We discuss new physics that can show up in the $\tau^+\tau^-$ production
process at the LHC but not in the dimuon or the dielectron channels. We
consider three different generic possibilities: a new resonance in the
Drell-Yan process in the form of a non-universal $Z^\prime$; a new non-resonant
contribution to $q\bar{q}\to \tau^+\tau^-$ in the form of leptoquarks; and
contributions from gluon fusion due to effective lepton gluonic couplings. We
emphasize the use of the charge asymmetry both to discover new physics and to
distinguish between different possibilities
