Extracting |Vbc|, mc and mb from inclusive D and B decays

1993/08/31 by Michael Luke, Martin J. Savage · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(94)90331-x

published as Phys.Lett.B321:88-94,1994 · (revised version - contains a more detailed discussion of the uncertainty in our results from the uncertainty in the scale of α_s) 12 pages, 5 figures included, uses harvmac.tex and epsf.tex, UCSD/PTH 93-25, UTPT 93-21, CMU-HEP 93-13

arxiv created 1993/11/02 · openalex publication_date 1994/01/01 · arxiv updated 2010/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Using recent results for nonperturbative contributions to the B and D meson inclusive semileptonic widths, a model independent extraction of \vbc, m_c and m_b is made from the experimentally measured B and D lifetimes and semileptonic branching ratios. Constraining the parameters of the HQET at \CO(1/m_Q²) by the D semileptonic width, \vbc is found to lie in the range .040<\vbc< 0.057. The c and b quark masses are not well constrained due to uncertainty in the relevant scale of α_s. These results assume the validity of perturbative QCD at the low scales relevant to semileptonic charm decay. Without making this assumption, somewhat less stringent bounds on V_bc from B decay alone may be obtained.

Citations

• Review of particle properties

Cited by

• Failure of local duality in inclusive non-leptonic heavy flavour decays
• A new model-independent method of determining || and |V|
• Theory of inclusive B decays
• Measuring of |V| of the forthcoming decade