Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/46203
Share/Impact:
Título : Measurement of branching ratio and Bs0 lifetime in the decay Bs0→J/ψf0(980) at CDF
Autor : Aaltonen, T., Álvarez González, B., Casal, Bruno, Cuevas, Javier, Gómez, G., Palencia, Enrique, Rodrigo, Teresa, Ruiz Jimeno, Alberto, Scodellaro, Luca, Vila, Iván, Vilar, Rocío, Vizán, J.
Fecha de publicación : Sep-2011
Editor: American Physical Society
Resumen: We present a study of Bs0 decays to the CP-odd final state J/ψf0(980) with J/ψ→μ+μ- and f0(980)→π+π-. Using pp̅ collision data with an integrated luminosity of 3.8  fb-1 collected by the CDF II detector at the Tevatron we measure a Bs0 lifetime of τ(Bs0→J/ψf0(980))=1.70-0.11+0.12(stat)±0.03(syst)ps. This is the first measurement of the Bs0 lifetime in a decay to a CP eigenstate and corresponds in the standard model to the lifetime of the heavy Bs0 eigenstate. We also measure the product of branching fractions of Bs0→J/ψf0(980) and f0(980)→π+π- relative to the product of branching fractions of Bs0→J/ψϕ and ϕ→K+K- to be Rf0/ϕ=0.257±0.020(stat)±0.014(syst), which is the most precise determination of this quantity to date.
Descripción : 14 páginas, 11 figuras, 2 tablas.-- CDF Collaboration: et al.
Versión del editor: http://dx.doi.org/10.1103/PhysRevD.84.052012
URI : http://hdl.handle.net/10261/46203
ISSN: 1550-7998
DOI: 10.1103/PhysRevD.84.052012
Citación : Physical Review D 84(5): 052012 (2011)
Appears in Collections:(IFCA) Artículos

Files in This Item:
File Description SizeFormat 
e052012.pdf631,11 kBAdobe PDFView/Open
Show full item record
 
CSIC SFX LinksSFX Query


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