2007/02/28 by D0 Collaboration, V. M. Abazov, V. Abazov +99 · 1 citation
Physics and Astronomy · #Branching fraction #Crystallography #High-Energy Particle Collisions Research #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.99.241801
published as Phys.Rev.Lett.99:241801,2007 · Submitted to Phys. Rev. Lett
arxiv created 2007/02/28 · openalex publication_date 2007/12/12 · arxiv updated 2009/12/01 · openalex created_date 2017/02/10 · openalex updated_date 2026/08/05
We report a study of the decay Bs0\ensuremath→Ds(*)Ds(*) using a data sample corresponding to 1.3 fb^\ensuremath-1 of integrated luminosity collected by the D0 experiment in 2002--2006 during run II of the Fermilab Tevatron collider. One Ds(*) meson was partially reconstructed in the decay Ds\ensuremath→\ensuremathφ\ensuremathμ\ensuremathν, and the other Ds(*) meson was identified using the decay Ds\ensuremath→\ensuremathφ\ensuremathπ where no attempt was made to distinguish Ds and Ds* states. For the branching fraction Br(Bs0\ensuremath→Ds(*)Ds(*)) we obtain a 90% C.L. range [0.002,0.080] and central value 0.039_\ensuremath-0.017+0.019(stat)_\ensuremath-0.015+0.016(syst). This was subsequently used to make the most precise estimate of the width difference \ensuremathΔ\ensuremathΓsCP in the Bs0\ensuremath-Bs0 system: \ensuremathΔ\ensuremathΓsCP/\ensuremathΓs=0.079_\ensuremath-0.035+0.038(stat)_\ensuremath-0.030+0.031(syst).