A combined mass and particle identification fit is used to make the first observation of the decay Bs(0)->(Ds(+/-)K( -/+) and measure the branching fraction of Bs(0)->(Ds(+/-)K( -/+) relative to Bs(0)-> Ds(+)pi(-). This analysis uses 1.2 fb(-1) integrated luminosity of p (p) over bar collisions at root s=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a Bs(0)->(Ds(+/-)K( -/+) signal with a statistical significance of 8.1 sigma and measure B(Bs(0)->Ds(+/-)K( -/+))/B(Bs(0)-> Ds(+)pi(-))=0.097 +/- 0.018(stat)+/- 0.009(syst).

T., A., J., A., T., A., M. G., A., B. A., G., S., A., et al. (2009). First Observation of Bs(0)->(Ds(+/-)K( -/+) and Measurement of the Ratio of Branching Fractions B(Bs(0)->(Ds(+/-)K(-/+))/B(Bs(0)-> Ds(+)pi(-)). PHYSICAL REVIEW LETTERS, 103(19), 191802-1-191802-7 [10.1103/PhysRevLett.103.191802].

First Observation of Bs(0)->(Ds(+/-)K( -/+) and Measurement of the Ratio of Branching Fractions B(Bs(0)->(Ds(+/-)K(-/+))/B(Bs(0)-> Ds(+)pi(-))

CIOCCI, MARIA AGNESE;
2009

Abstract

A combined mass and particle identification fit is used to make the first observation of the decay Bs(0)->(Ds(+/-)K( -/+) and measure the branching fraction of Bs(0)->(Ds(+/-)K( -/+) relative to Bs(0)-> Ds(+)pi(-). This analysis uses 1.2 fb(-1) integrated luminosity of p (p) over bar collisions at root s=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a Bs(0)->(Ds(+/-)K( -/+) signal with a statistical significance of 8.1 sigma and measure B(Bs(0)->Ds(+/-)K( -/+))/B(Bs(0)-> Ds(+)pi(-))=0.097 +/- 0.018(stat)+/- 0.009(syst).
T., A., J., A., T., A., M. G., A., B. A., G., S., A., et al. (2009). First Observation of Bs(0)->(Ds(+/-)K( -/+) and Measurement of the Ratio of Branching Fractions B(Bs(0)->(Ds(+/-)K(-/+))/B(Bs(0)-> Ds(+)pi(-)). PHYSICAL REVIEW LETTERS, 103(19), 191802-1-191802-7 [10.1103/PhysRevLett.103.191802].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/38467
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