Phys. Rev. D 45, 752–770 (1992)Measurement of baryon production in B-meson decayReceived 15 April 1991; published in the issue dated 1 February 1992 Using the CLEO detector at the Cornell Electron Storage Ring, we observe B-meson decays to Λc+ and report on improved measurements of inclusive branching fractions and momentum spectra of other baryons. For the inclusive decay B̅ →Λc+X with Λc+→pK-π+, we find that the product branching fraction B(B̅ →Λc+X)B(Λc+→pK-π+)=(0.273±0.051±0.039)%. Our measured inclusive branching fractions to noncharmed baryons are B(B→pX)=(8.0±0.5±0.3)%, B(B→ΛX)=(3.8±0.4±0.6)%, and B(B→Ξ-X)=(0.27±0.05±0.04)%. From these rates and studies of baryon-lepton and baryon-antibaryon correlations in B decays, we have estimated the branching fraction B(B̅ →Λc+X) to be (6.4±0.8±0.8)%. Combining these results, we calculate B(Λc+→pK-π+) to be (4.3±1.0±0.8)%. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.45.752
DOI:
10.1103/PhysRevD.45.752
PACS:
13.25.+m, 14.40.Jz
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