  The Drell-Yan process is a copious source of lepton pairs at high energy and
is measured with great precision at the Large Hadron Collider (LHC). Barring
any new light particles, beyond the Standard Model effects can be studied in
Drell-Yan production using an effective field theory. At tree level, new
4-fermion interactions dominate, while at one loop operators modifying 3-gauge
boson couplings contribute effects that are enhanced at high energy. We study
the sensitivity of the neutral Drell-Yan process to these dimension-6 operators
and compare the sensitivity to that of $W^+W^-$ pair production at the LHC.
