Measurement of the branching fraction Br(Bs -> Ds(*) Ds(*))

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dc.creatorD0 Collaboration
dc.creatorAbazov, V.
dc.date2007-02-28
dc.date.accessioned2026-07-07T11:58:22Z
dc.date.available2026-07-07T11:58:22Z
dc.descriptionWe report a measurement of the branching fraction Br(Bs -> Ds(*) Ds(*)) using a data sample corresponding to 1.3 fb^{-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 -> phi mu nu, and the other Ds(*) meson was identified using the decay Ds -> phi pi where no attempt was made to distinguish Ds and Ds* states. The resulting measurement is Br(Bs -> Ds(*) Ds(*)) = 0.039 +0.019 -0.017 (stat) +0.016 -0.015 (syst). This was subsequently used to estimate the width difference Delta Gamma^{CP}_s in the Bs-Bsbar system: Delta Gamma^{CP}_s / Gamma_s = 0.079 +0.038 -0.035 (stat) +0.031 -0.030 (syst).
dc.descriptionSubmitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/hep-ex/0702049
dc.identifierhttp://arxiv.org/abs/hep-ex/0702049
dc.identifierPhys.Rev.Lett.99:241801,2007
dc.identifierdoi:10.1103/PhysRevLett.99.241801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206201
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of the branching fraction Br(Bs -> Ds(*) Ds(*))
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