1999/06/25 by R. Aleksan, Aleksan, R., M. Zito +10
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9906505
30 pages, LaTeX
openalex publication_date 1999/06/25 · arxiv created 1999/07/08 · arxiv updated 2016/09/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We compute the inclusive decay rates b → Ds-(D*-s) c including lowest order QCD corrections on the quark legs, and compare with existing data. Unlike the short distance QCD corrections, that are of higher order, these corrections are of order αs. In the on-shell renormalization scheme and for αs(mb) ≅ 0.2 we find a correction of -10% to the inclusive rate computed using factorization. This gives a total rate BR(b → Ds-(D*-s)c) ≅ 8% consistent within 1σ with the measured value BR(B → Ds±X) = (10.0 ± 2.5)%. The general formulae given here include the case of vanishing mass for the final quark b → Ds-(Ds*-)u. The radiative correction to this rate is -17%. We show in another place that this process can be useful for the measurement of the CKM matrix element Vub. We also give the renormalized vertex at the interesting values q2 = 0 and q2 = qmax2, and compare with existing literature.