Observation of B0 to p Lambdabar pi-

Details Observation of B0 to p Lambdabar pi- Observation of B0 to p Lambdabar pi-

2003-02-18

arxiv.org/abs/hep-ex/0302024v4

Phys.Rev.Lett.90:201802,2003

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages and 7 figures

Scientific paper

10.1103/PhysRevLett.90.201802

We report the first observation of the charmless hyperonic B decay, B0 -> p Lambdabar pi-, using a 78 fb^-1 data sample recorded on the Upsilon(4S) resonance with the Belle detector at KEKB. The measured branching fraction is B(B0 -> p Lambdabar pi-) = (3.97 ^{+1.00}_{-0.80} +- 0.56) * 10^-6. Searches for B0 -> p Lambdabar K- and p Sigmabar0 pi- yield no significant signals and we set 90% confidence level upper limits of B(B0 -> p Lambdabar K-) < 8.2 * 10^-7 and B(B0 -> p Sigmabar0 pi-) < 3.8 * 10^-6.

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