Study of the Decay Bs0Ds(*)Ds(*)

V. M. Abazov et al. (D0 Collaboration)
Phys. Rev. Lett. 99, 241801 – Published 12 December 2007

Abstract

We report a study of the decay Bs0Ds(*)Ds(*) using a data sample corresponding to 1.3fb1 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 Dsϕμν, and the other Ds(*) meson was identified using the decay Dsϕπ where no attempt was made to distinguish Ds and Ds* states. For the branching fraction Br(Bs0Ds(*)Ds(*)) we obtain a 90% C.L. range [0.002,0.080] and central value 0.0390.017+0.019(stat)0.015+0.016(syst). This was subsequently used to make the most precise estimate of the width difference ΔΓsCP in the Bs0B¯s0 system: ΔΓsCP/Γs=0.0790.035+0.038(stat)0.030+0.031(syst).

  • Figure
  • Figure
  • Received 1 March 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.241801

©2007 American Physical Society

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Vol. 99, Iss. 24 — 14 December 2007

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