2001/02/28 by I. L. Grach, P. Yu. Kulikov, I. M. Narodetskii
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #hep-ph
paper · pdf · doi:10.1134/1.1378110
published as JETP Letters 73 (2001) 317 · 10 pages, LaTeX, 5 figures. A misprint in the title is corrected
openalex publication_date 2001/04/01 · arxiv created 2001/05/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
A generalization of the parton-like formula is used for the first time to find the differential distributions in the inclusive semileptonic weak decays of the B meson. The main features of this new approach are the treatment of the b quark as an on-mass-shell particle and the inclusion of the effects arising from the b-quark transverse motion in the B meson. Using the b-quark light-front (LF) distribution function related to the equal time momentum wave function taken from the ACM model, we compute the electron energy spectra and the total semileptonic widths of the B meson. We find an impressive agreement between the electron energy spectra calculated in the LF approach and the ones obtained in the ACM model, provided the b-quark mass is identified with the average of the floating b-quark mass in the ACM model. In spite of the simplicity of the model, we obtain a fairly good description of the CLEO data for | V cb | 0.042.