Measurement of the B0 -> Lambda-bar p pi Branching Fraction and Study of the Decay Dynamics

Details Measurement of the B0 -> Lambda-bar p pi Branching Fraction and Study of the Decay Dynamics Measurement of the B0 -> Lambda-bar p pi Branching Fraction and Study of the Decay Dynamics

2006-08-07

arxiv.org/abs/hep-ex/0608020v1

Phys.Rev.D79:112009,2009

Physics

High Energy Physics

High Energy Physics - Experiment

Contributed to the 33rd International Conference on High-Energy Physics, ICHEP 06

Scientific paper

10.1103/PhysRevD.79.112009

We present a measurement of the B0 -> Lambda-bar p pi branching fraction performed using the BaBar detector at the PEP-II asymmetric energy e+e- collider. Based on a 232 million BB-bar pairs data sample we measure: BR(B0 -> Lambda-bar p pi) = [ 3.30 +- 0.53 (stat.) +- 0.31(syst.) ] x 10^-6. A measurement of the differential spectrum as a function of the di-baryon invariant mass m(Lambda p) is also presented; this shows a near-threshold enhancement similar to that observed in other baryonic B decays.

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