BABAR Publications

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PLOT-0045 Measurement of the Branching Fraction for B0->K+K-K0
Doc Type Public Plots or Figures
Record Created August 3, 2003
Comments Presented at Lepton Photon Conference, 2003
Abstract
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We report on the branching fraction measurement for charmless decays of the neutral B meson into  
the three-body K+K-K0 final state using 88.4 million BB pairs created at the PEPII B-meson Factory 
at SLAC and collected by the BaBar detector. 
We reconstruct events in a decay subchannel K+K-Ks, with Ks->pi+pi-.
A preliminary result for the measurement is

		BF(B0->K+K-K0) = ( 23.8 +- 2.3  +- 2.2 )*1E-06

where the first error is statistical and second systematic.
When phiK0 decays are excluded, the branching fraction is ( 19.9 +- 2.1 +- 1.9 )*1E-06.

Using isospin symmetry, and comparing decay rates of B0->K+K-K0 and B+->K+KsKs
we find that the the final state K+K-Ks is dominated by the CP-even
component, which is in agreement with previous Belle's measurement (hep-ex/0208030).

Revisions and Files 1 revised August 3, 2003
File Date
Thumbnails
File Name File Type File Format File Size (Kb) Comments
04-AUG-2003 F on-probCut.eps Figure or plot eps 18.24 Fisher discriminant projection of maximum likelihood events with signal probability cut. Points are data, solid line is the likelihood projection for all events, dashed for the background.
06-AUG-2003 abstract-bad688.txt Abstract txt 0.77
04-AUG-2003 deltaE on-probCut.eps Figure or plot eps 25.39 deltaE projection of events used in maximum likelihood fit with signal probability cut. Points are data, solid line is the likelihood projection for all events,dashed for the background.
06-AUG-2003 m12 on-cnc.eps Figure or plot eps 27.17 Invariant mass of K+K- pairs. All events are represented with the hollow histogram with error bars, hatched histogram is the background extrapolated from side-bands. The small window shows phi mass range.
06-AUG-2003 m13+m23 on-cnc.eps Figure or plot eps 20.25 Invariant mass of K+Ks and K-Ks pairs (two entries per B0 candidate). Hollow histogram with error bars represents all events, and hatched histogram background events extrapolated from side-bands.
04-AUG-2003 mES-deltaE on cnc SRbands.eps Figure or plot eps 41.84 mES-deltaE scatter plot with projections to axes.
04-AUG-2003 mES on-probCut.eps Figure or plot eps 28.28 mES projection of events used in the maximum likelihood fit. A probability cut on signal events is applied to suppress the background. Points are data, solid line is likelihood projection for all events, dashed for background.
Submitted To2003 International Symposium on Lepton and Photon Interactions at High Energies
Categories
  • AWG: Charmless 3-body