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

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arxiv hep-ex/0403030 v2 pith:XW6242G4 submitted 2004-03-18 hep-ex

classification hep-ex
keywords decayselectronenergyspectrumbranchingfractioninclusivemeasurement
verification ladder T0 review T1 audit T2 compute T3 formal
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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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Cited by 1 Pith paper

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  1. New Physics in inclusive semileptonic $B$ decays

    hep-ph 2025-07 conditional novelty 6.0 of 10

    A global fit to inclusive semileptonic B decay moments and rate constrains all seven dimension-six new-physics parameters, finding no significant BSM signal but new bounds, especially on the right-handed vector Wilson...

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