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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/22143
Title: First Observation of B-s(0)->(DsK -/+)-K-+/- and Measurement of the Ratio of Branching Fractions B(B-s(0)->(DsK -/+)-K-+/-)/B(B-s(0)-> D-s(+)pi(-))
Authors: CDF Collaboration; Cabrera, Susana; Cuenca Almenar, Cristóbal; Álvarez González, B.; Casal, Bruno; Cuevas, Javier; Gómez, G.; Rodrigo, Teresa; Ruiz Jimeno, Alberto; Scodellaro, Luca; Vila, Iván; Vilar, Rocío; Aaltonen, T.
Issue Date: 6-Nov-2009
Publisher: American Physical Society
Citation: Physical Review Letters 103 (19): 191802 (2009)
Abstract: A combined mass and particle identification fit is used to make the first observation of the decay B-s(0)->(DsK -/+)-K-+/- and measure the branching fraction of B-s(0)->(DsK -/+)-K-+/- relative to B-s(0)-> D-s(+)pi(-). This analysis uses 1.2 fb(-1) integrated luminosity of pp collisions at s=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a B-s(0)->(DsK -/+)-K-+/- signal with a statistical significance of 8.1 sigma and measure B(B-s(0)->(DsK -/+)-K-+/-)/B(B-s(0)-> D-s(+)pi(-))=0.097 +/- 0.018(stat)+/- 0.009(syst).
Publisher version (URL): http://dx.doi.org/ 10.1103/PhysRevLett.103.191802
URI: http://hdl.handle.net/10261/22143
DOI: 10.1103/PhysRevLett.103.191802
ISSN: 0031-9007
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