Neutrino Trident Production from NuTeV
  A preliminary analysis of zero hadronic energy dimuon production in the NuTeV experiment is presented (nu_mu (anti-nu_mu) + N -> nu_mu(anti-nu_mu) + mu^+ + mu^- + N). The data show a signal in excess of background which is attributed to neutrino trident production. This excess is consistent with the Standard Model prediction including electroweak interference. Other sources of low-hadronic energy dimuon events are also considered. 
NuTeV Collaboration: T. Adams, et al