  Neutrino-induced coherent charged pion production on nuclei,
$\stackrel{(-)}{\nu}_\mu A\to\mu^\pm\pi^\mp A$ is a rare, inelastic interaction
in which a small squared four-momentum $| t|$ is transferred to the recoil
nucleus leaving it intact in the reaction. In the scintillator tracker of
MINERvA, we remove events with evidence of particles from nuclear breakup and
reconstruct $| t|$ from the final state pion and muon. We select low $| t|$
events to isolate a sample rich in coherent candidates. By selecting low $| t|$
events we produce a model-independent measurement of the differential cross
section for coherent scattering of neutrinos and anti-neutrinos on carbon. We
find poor agreement with the predicted kinematics in neutrino generators used
by current oscillation experiments.
