Moments of the Electron Energy Spectrum in B --> X_c l νdecays at Belle

Abstract

We report a measurement of the inclusive electron energy spectrum for charmed semileptonic decays of B mesons in a 140 fb^-1 data sample collected on the Upsilon(4S) resonance, with the Belle detector at the KEKB asymmetric energy e^+ e^- collider. We determine the first, second and third moments of the electron energy spectrum for threshold values of the electron energy between 0.4 and 1.5 GeV.

arXiv comment13 pages, 3 figures, 6 tables, contributed to HEP2005 International Europhysics Conference on High Energy Physics