Measurement of the Electron Energy Spectrum and its Moments in Inclusive B->X e nu Decays

Details Measurement of the Electron Energy Spectrum and its Moments in Inclusive B->X e nu Decays Measurement of the Electron Energy Spectrum and its Moments in Inclusive B->X e nu Decays

2004-03-18

arxiv.org/abs/hep-ex/0403030v2

Phys.Rev.D69:111104,2004

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1103/PhysRevD.69.111104

We report a measurement of the inclusive electron energy spectrum for semileptonic decays of B mesons in a data sample of 52 million Y4S -> BBar decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson factory at SLAC. We determine the branching fraction, first, second, and third moments of the spectrum for lower cut-offs on the electron energy between 0.6 and 1.5 GeV. We measure the partial branching fraction to be Br(B -> X e nu, E_e>0.6 GeV) = (10.36 +-0.06(stat.) +-0.23(sys))%.

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