Download or read book Measurement of the Electron Energy Spectrum and Its Moments in Inclusive B --] X E Nu Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report a measurement of the inclusive electron energy spectrum for semileptonic decays of B mesons in a data sample of 52 million [Upsilon](4S) [yields] B[bar B] 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 1.5GeV. We measure the partial branching fraction to be [Beta](B [yields] Xev, E[sub e]> 0.6GeV) = (10.36 [+-] 0.06(stat.) [+-] 0.23(sys.))%.