Status of the Measurement of Neutrinos Elastically Scattering Off Electrons in the NOvA Near Detector

Neutrinos elastically scattering off atomic electrons is a purely leptonic process whose cross section can be precisely calculated in the standard model. A measurement of this process can provide an in-situ constraint to the absolute neutrino flux in an accelerator-based ν_μ beam. NOvA is a long-baseline neutrino experiment optimized to observe the oscillation of muon neutrinos to electron neutrinos. It consists of a near detector located 1 km downstream of the neutrino production target at Fermilab and a far detector located 810 km away in Ash River, Minnesota. This talk presents the status of the neutrino-electron elastic scattering measurement, including strategies of selecting signals, as well as the prospect of reducing the flux uncertainty.