2009/05/20 by Run-Hui Li, Cai-Dian Lü, Cai-Dian Lu +1 · 3 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.80.014005
published as Phys.Rev.D80:014005,2009 · 21 pages, 3 figures
arxiv created 2009/05/20 · openalex publication_date 2009/07/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
The transition form factors of Bs0\ensuremath→Ds+(2317) and Bs0\ensuremath→Ds+(1968) at large recoil region are investigated in the light cone sum rules approach, where the heavy quark effective theory is adopted to describe the form factors at small recoil region. With the form factors obtained, we carry out a detailed analysis on both the semileptonic decays Bs0\ensuremath→Ds+(1968,2317)l\ensuremathνl and nonleptonic decays Bs\ensuremath→Ds+(1968,2317)M with M being a light meson or a charmed meson under the factorization approach. Our results show that the branching fraction of Bs0\ensuremath→Ds+(2317)\ensuremathμ\ensuremathν_\ensuremathμ is around 2.3\ifmmode×\else\texttimes\fi10^\ensuremath-3, which should be detectable with ease at the Tevatron and CERN LHC. It is also found that the branching fractions of Bs0\ensuremath→Ds+(1968)l\ensuremathνl are almost 1 order larger than those of the corresponding Bs0\ensuremath→Ds+(2317)l\ensuremathνl decays. The consistency of predictions for Bs\ensuremath→Ds+(1968,2317)L (L denotes a light meson) in the factorization assumption and kT factorization also supports the success of color transparency mechanism in the color allowed decay modes. Most two-charmed meson decays of Bs mesons possess quite large branching ratios that are accessible in the experiments. These channels are of great importance to explore the hadronic structure of charmed mesons as well as the nonperturbative dynamics of QCD.