The decays B_{s}^{0}D_{s}^{(*)+}D_{s}^{(*)-} are reconstructed in a data sample corresponding to an integrated luminosity of 6.8fb^{-1} collected by the CDF II detector at the Tevatron pp[over ] collider. All decay modes are observed with a significance of more than 10sigma, and we measure the B_{s}^{0} production rate times B_{s}^{0}D_{s}^{(*)+}D_{s}^{(*)-} branching ratios relative to the normalization mode B^{0}D_{s}^{+}D^{-}to be 0.1830.0210.017 for B_{s}^{0}D_{s}^{+}D_{s}^{-}, 0.4240.0460.035 for B_{s}^{0}D_{s}^{*}D_{s}^{∓}, 0.6540.0720.065 for B_{s}^{0}D_{s}^{*+}D_{s}^{*-}, and 1.2610.0950.112 for the inclusive decay B_{s}^{0}D_{s}^{(*)+}D_{s}^{(*)-}, where the uncertainties are statistical and systematic. These results are the most precise single measurements to date and provide important constraints for indirect searches for nonstandard model physics in B_{s}^{0} mixing.
Measurement of B_s^0D_s^(*)+D_s^(*)- Branching Ratios.
BISELLO, DARIO;BUSETTO, GIOVANNI;LUCCHESI, DONATELLA;
2012
Abstract
The decays B_{s}^{0}D_{s}^{(*)+}D_{s}^{(*)-} are reconstructed in a data sample corresponding to an integrated luminosity of 6.8fb^{-1} collected by the CDF II detector at the Tevatron pp[over ] collider. All decay modes are observed with a significance of more than 10sigma, and we measure the B_{s}^{0} production rate times B_{s}^{0}D_{s}^{(*)+}D_{s}^{(*)-} branching ratios relative to the normalization mode B^{0}D_{s}^{+}D^{-}to be 0.1830.0210.017 for B_{s}^{0}D_{s}^{+}D_{s}^{-}, 0.4240.0460.035 for B_{s}^{0}D_{s}^{*}D_{s}^{∓}, 0.6540.0720.065 for B_{s}^{0}D_{s}^{*+}D_{s}^{*-}, and 1.2610.0950.112 for the inclusive decay B_{s}^{0}D_{s}^{(*)+}D_{s}^{(*)-}, where the uncertainties are statistical and systematic. These results are the most precise single measurements to date and provide important constraints for indirect searches for nonstandard model physics in B_{s}^{0} mixing.Pubblicazioni consigliate
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