Digital.CSIC > Ciencia y Tecnologías Físicas > Instituto de Física Corpuscular (IFIC) > (IFIC) Artículos >




Open Access item 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, 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
Appears in Collections:(IFIC) Artículos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.