Measurement of the branching fraction for inclusive semileptonic B meson decays

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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 [Formula Presented] 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 [Formula Presented] Based on this measurement we determine the Cabibbo-Kobayashi-Maskawa (CKM) matrix element [Formula Presented].

Aubert, B., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., Lees, J., et al. (2003). Measurement of the branching fraction for inclusive semileptonic B meson decays. PHYSICAL REVIEW D, 67(3) [10.1103/PhysRevD.67.031101].