The decays B(s)0→Ds(*)+Ds(*)- are reconstructed in a
data sample corresponding to an integrated luminosity of 6.8 fb-1
collected by the CDF II detector at the Tevatron pp̅ collider. All decay
modes are observed with a significance of more than 10σ, and we measure
the B(s)0 production rate times B(s)0→Ds(*)+Ds(*)- branching ratios
relative to the normalization mode B0→Ds+D-to be 0.183±0.021±0.017
for B(s)0→Ds+Ds-, 0.424±0.046±0.035 for B(s)0→Ds*±Ds∓,
0.654±0.072±0.065 for B(s)0→Ds*+Ds*-, and 1.261±0.095±0.112 for
the inclusive decay B(s)0→Ds(*)+Ds(*)-, 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.
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Updated: Wednesday, 2012 May 16 16:07:50 CDT automatically from input from Stephanie A Schuler