2000/04/07 by Robert Fleischer, D. Wyler, Daniel Wyler · 1 citation
Mathematics · Physics and Astronomy · #Amplitude #Combinatorics #Mathematics #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.62.057503
published as Phys.Rev. D62 (2000) 057503 · 9 pages, LaTeX, 3 figures, reference added
arxiv created 2000/04/07 · openalex publication_date 2000/08/11 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We point out that the pure ``tree'' decays Bc^\ifmmode±\else\textpm\fi\ensuremath→Ds^\ifmmode±\else\textpm\fiD are particularly well suited to extract the Cabibbo-Kobayashi-Maskawa angle \ensuremathγ through amplitude relations. In contrast with conceptually similar strategies using B^\ifmmode±\else\textpm\fi\ensuremath→K^\ifmmode±\else\textpm\fiD or Bd\ensuremath→K*0D decays, the advantage of the Bc approach is that the corresponding triangles have three sides of comparable length and do not involve small amplitudes. Decays of the type Bc^\ifmmode±\else\textpm\fi\ensuremath→D^\ifmmode±\else\textpm\fiD, the U-spin counterparts of Bc^\ifmmode±\else\textpm\fi\ensuremath→Ds^\ifmmode±\else\textpm\fiD, can be added to the analysis, as well as channels, where the Ds^\ifmmode±\else\textpm\fi and D^\ifmmode±\else\textpm\fi mesons are replaced by higher resonances.