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Russell, B.T. Fleming, B. Viren, C. Barnes, C.D. Moore, C. Hill, C. James, C. Mariani, C.Thorpe, C. Zhang, D.A. Martinez Caicedo, D. Caratelli, D. Cianci, D. Devitt, D. Franco, D. Garcia-Gamez, D. Lorca, D. Marsden, D. Naples, D. Porzio, D.W. Schmitz, E. Church, E. Gramellini, E. Hall, E.L. Snider, E. Piasetzky, E. Yandel, F. Cavanna, G.A. Fiorentini Aguirre, G.A. Horton-Smith, G. Barr, G. Cerati, G. Ge, G. Karagiorgi, G.P. Zeller, G. Scanavini, G. Yarbrough, H.E. Rogers, H. Greenlee, H. Wei, I. Caro Terrazas, I. Kreslo, I. Lepetic, I. Ponce-Pinto, J. Anthony, J. Asaadi, J.H. Jo, J.I. Crespo-Anadon, J. Jan de Vries, J.J. Evans, J.L. Raaf, J. Marshall, J. Martin-Albo, J.M. Conrad, J. Mills, J. Moon, J. Mousseau, J. Nowak, J. Rodriguez Rondon, J. Sinclair, J. Spitz, J. St. John, J. Zennamo, K. Duffy, K. Li, K. Mason, K. Miller, K. Mistry, K. Sutton, K. Terao, L. Bathe-Peters, L. Camilleri, L. Cooper-Troendle, L. Domine, L. Escudero Sanchez, L.E. Yates, L. Hagaman, L. Jiang, L. 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Tang, W. Van De Pontseele, W. Wu, X. Ji, X. Luo, X. Qian, Y. Chen, Y.J. Jwa, Y. Li, Y.-T. Tsai, Z. Pavlovic, Z. Williams","submitted_at":"2021-01-11T23:09:42Z","abstract_excerpt":"We present a measurement of the combined $\\nu_e$ + $\\bar{\\nu}_e$ flux-averaged charged-current inclusive cross section on argon using data from the MicroBooNE liquid argon time projection chamber (LArTPC) at Fermilab. Using the off-axis flux from the NuMI beam, MicroBooNE has reconstructed 214 candidate $\\nu_e$ + $\\bar{\\nu}_e$ interactions with an estimated exposure of 2.4$\\times10^{20}$ protons on target. Given the estimated purity of 38.6\\%, this implies the observation of 80 $\\nu_e$ + $\\bar{\\nu}_e$ events in argon, the largest such sample to date. 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