Measurement of the branching fraction for inclusive semileptonic B meson decays RID C-2728-2008 RID C-5223-2009 RID C-5719-2008 RID D-1189-2011 RID D-1055-2009 RID A-2675-2009

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doi:10.1103/PhysRevD.67.031101

A largely model-independent measurement of the inclusive electron momentum spectrum and branching fraction for semileptonic decays of B mesons is presented based on data recorded at the Y(4S) resonance with the BABAR detector. Backgrounds from secondary charm decays are separated from prompt B decays using charge and angular correlations between the electron from one B meson and a high momentum electron tag from the second B meson. The resulting branching fraction is B(B-->Xenu)=[10.87+/-0.18(stat)+/-0.30(syst)]%. Based on this measurement we determine the Cabibbo-Kobayashi-Maskawa (CKM) matrix element \V-cb\.