2004/08/31 by C. Bauer, Christian W. Bauer, Zoltan Ligeti +3 · 5 citations
Mathematics · Physics and Astronomy · #Combinatorics #Hadron #High-Energy Particle Collisions Research #Lambda #Lepton #Mathematics #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Semileptonic decay #hep-ph
paper · pdf · doi:10.1103/physrevd.70.094017
published as Phys.Rev.D70:094017,2004 · 12 pages, 6 figures. Includes latest BELLE data on lepton and hadron moments. Electromagnetic correction was improperly included in previous version
arxiv created 2004/10/29 · openalex publication_date 2004/11/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In light of the large amount of new experimental data, we revisit the determination of |Vcb| and mb from inclusive semileptonic and radiative B decays. We study shape variables to order \ensuremathΛQCD3/mb3 and \ensuremathαs2\ensuremathβ0, and include the order \ensuremathαs\ensuremathΛQCD/mb correction to the hadron mass spectrum in semileptonic decay, which improves the agreement with the data. We focus on the 1S and kinetic mass schemes for the b quark, with and without expanding mb\ensuremath-mc in heavy quark effective theory. We perform fits to all available data from BABAR, BELLE, CDF, CLEO, and DELPHI, discuss the theoretical uncertainties, and compare with earlier results. We find |Vcb|=(41.4\ifmmode±\else\textpm\fi0.6\ifmmode±\else\textpm\fi0.1_\ensuremathτB)\ifmmode×\else\texttimes\fi10^\ensuremath-3 and mb1S=4.68\ifmmode±\else\textpm\fi0.03 GeV, including our estimate of the theoretical uncertainty in the fit.