1999/02/28 by Benjamı́n Grinstein, Benjamin Grinstein, Richard F. Lebed · 2 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:10.1103/physrevd.60.031302
published as Phys.Rev.D60:031302,1999 · 10 pages, latex (revtex), 2 eps figures. Corrects numerical errors in branching fraction calculation
arxiv created 1999/03/20 · openalex publication_date 1999/07/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The decays B+\ensuremath→Ds*+\ensuremathγ and B+\ensuremath→D*+\ensuremathγ can be used for an extraction of |Vub|. When the b and c quarks are nearly degenerate, the rate for these modes can be determined in terms of other observed rates, namely BB mixing and D*\ensuremath→D\ensuremathγ decay. To this end, we introduce a novel application of heavy quark and flavor symmetries. Although somewhat unrealistic, this limit provides us with a first estimate of these rates.