The decays B0s->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 pp collider. All decay modes are observed with a significance of more than 10, and we measure the B0s production rate times B0s->Ds*+Ds*- branching ratios relative to the normalization mode B0->Ds+Ds- to be 0.183+-0.021 +-0.017 for B0s->Ds+Ds-, 0.424 +-0.046+-0.035 for B0s->Ds*+-Ds-+, 0.654+- 0.072+-0.065 for B0s->Ds*+Ds*-, and 1.261+-0.095+-0.112 for the inclusive decay B0s->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 B0s mixing.
Measurement of Bs0->Ds*+ Ds*- Branching Ratios
Cauz D.;Santi L.;
2012-01-01
Abstract
The decays B0s->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 pp collider. All decay modes are observed with a significance of more than 10, and we measure the B0s production rate times B0s->Ds*+Ds*- branching ratios relative to the normalization mode B0->Ds+Ds- to be 0.183+-0.021 +-0.017 for B0s->Ds+Ds-, 0.424 +-0.046+-0.035 for B0s->Ds*+-Ds-+, 0.654+- 0.072+-0.065 for B0s->Ds*+Ds*-, and 1.261+-0.095+-0.112 for the inclusive decay B0s->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 B0s mixing.File | Dimensione | Formato | |
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