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Measurement of branching ratio and B_{s}^{0} lifetime in the decay B_{s}^{0}→J/ψf_{0}(980) at CDF
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(2011) Measurement of branching ratio and B_{s}^{0} lifetime in the decay B_{s}^{0}→J/ψf_{0}(980) at CDF. Physical Review D, Vol. 84 (No. 5). doi:10.1103/PhysRevD.84.052012 Research output not available from this repository, contact author.
Official URL: http://dx.doi.org/10.1103/PhysRevD.84.052012
Abstract
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.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science > Physics | ||||
| Journal or Publication Title: | Physical Review D | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | 2011 | ||||
| Dates: |
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| Volume: | Vol. 84 | ||||
| Number: | No. 5 | ||||
| DOI: | 10.1103/PhysRevD.84.052012 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published |
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