Observation of New Charmless Decays of Bottom Hadrons
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Aaltonen-2009-Observation of New C.pdf
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Author(s)
Xie, Si
Knuteson, Bruce O.
Henderson, C.
Hahn, Kristian Allan
Gomez-Ceballos, Guillelmo
Choudalakis, Georgios
Paus, Christoph M. E.
Makhoul, Khaldoun
Goncharov, Maxim
Bauer, Gerry P
Date Issued
July 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Observation of New Charmless Decays of Bottom Hadrons.” Physical Review Letters 103.3 (2009): 031801. © 2009 The American Physical Society
Version
Final published version
Abstract
We search for new charmless decays of neutral b hadrons to pairs of charged hadrons, using 1 fb[superscript -1] of data collected by the CDF II detector at the Fermilab Tevatron. We report the first observation of the B[subscript s][superscript 0]→K[superscript -]π[superscript +] decay and measure B[subscript s][superscript 0]→K[superscript -]π[superscript +]=(5.0±0.7(stat)±0.8(syst))×10[superscript -6]. We also report the first observation of charmless b-baryon decays, and measure B(Λ[subscript b][superscript 0]→pπ[superscript -])=(3.5±0.6(stat)±0.9(syst))×10[superscript -6] and B(Λb0→pK-)=(5.6±0.8(stat)±1.5(syst))×10[superscript -6]. No evidence is found for other modes, and we set the limit B(B[subscript s][superscript 0]→π[superscript +]π[superscript -])<1.2×10[superscript -6] at 90% C.L.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.103.031801
