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].

Measurement of the branching fraction for inclusive semileptonic B meson decays

CARPINELLI, Massimo;
2003

Abstract

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].
Articolo in rivista - Articolo scientifico
antenna; article; electron; fractionation; mathematical computing; mathematical model; measurement; physics; radioisotope decay; spectroscopy; spectrum
English
B. Aubert et al. (BABAR Collaboration)
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].
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