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.

Measurement of the branching fraction for inclusive semileptonic B meson decays / Aubert, B., Boutigny, D., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Robbe, P., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., Abrams, G.s., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - 67:3(2003). [10.1103/physrevd.67.031101]

Measurement of the branching fraction for inclusive semileptonic B meson decays

RAHATLOU, SHAHRAM;SARTI, ALESSIO;BELLINI, Fabio;CAVOTO, Gianluca;DEL RE, Daniele;FACCINI, Riccardo;FERRONI, Fernando;VOENA C;
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 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.
2003
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the branching fraction for inclusive semileptonic B meson decays / Aubert, B., Boutigny, D., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Robbe, P., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., Abrams, G.s., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - 67:3(2003). [10.1103/physrevd.67.031101]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/250984
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