Measurement of the ${\nu }_{e}$-Nucleus Charged-Current Double-Differential Cross Section at $⟨{E}_{\nu }⟩=2.4\text{}\text{}\mathrm{GeV}$ Using NOvA

The inclusive electron neutrino charged-current cross section is measured in the NOvA near detector using $8.02×{10}^{20}$ protons-on-target in the NuMI beam. The sample of GeV electron neutrino interactions is the largest analyzed to date and is limited by $\simeq 17%$ systematic rather than the $\simeq 7.4%$ statistical uncertainties. The double-differential cross section in final-state electron energy and angle is presented for the first time, together with the single-differential dependence on ${Q}^{2}$ (squared four-momentum transfer) and energy, in the range $1\text{}\text{}\mathrm{GeV}\le {E}_{\nu }<6\text{}\text{}\mathrm{GeV}$. Detailed comparisons are made to the predictions of the GENIE, GiBUU, NEUT, and NuWro neutrino event generators. The data do not strongly favor a model over the others consistently across all three cross sections measured, though some models have especially good or poor agreement in the single differential cross section vs ${Q}^{2}$.