2003/12/11 by Alakabha Datta, Harry J. Lipkin, Patrick O’Donnell +1
Mathematics · Physics and Astronomy · #Algorithm #Atomic and Subatomic Physics Research #Branching fraction #Factorization #Hadron #Lambda #Mathematics #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.69.094002
published as Phys.Rev.D69:094002,2004 · 16 pages LaTeX
arxiv created 2003/12/11 · openalex publication_date 2004/05/13 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We consider nonleptonic Cabibbo-allowed \ensuremathΛb decays in the factorization approximation. We calculate nonleptonic decays of the type \ensuremathΛb\ensuremath→\ensuremathΛcP and \ensuremathΛb\ensuremath→\ensuremathΛcV relative to Bd0\ensuremath→D+P and Bd0\ensuremath→D+V where we include among the pseudoscalar states and the vector states the newly discovered Ds resonances, Ds(2317) and Ds(2460). In the ratio of \ensuremathΛb decays to Ds(2317) and Ds(2460) relative to the Bd0 decays to these states, the poorly known decay constants of Ds(2317) and Ds(2460) cancel, leading to predictions that can shed light on the nature of these new states. In general, we predict the \ensuremathΛb decays to be larger than the corresponding Bd0 decays and in particular we find the branching ratio for \ensuremathΛb\ensuremath→\ensuremathΛcDs(2460) can be between four to five times the branching ratio for Bd0\ensuremath→D+Ds(2460). This enhancement of \ensuremathΛb branching ratios follows primarily from the fact that more partial waves contribute in \ensuremathΛb decays than in Bd0 decays. Our predictions are largely independent of model calculations of hadronic inputs like form factors and decay constants.