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Phys. Rev. Lett. 59, 22 - 25 (1987)

Evidence for charmed baryons in B-meson decay

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M. S. Alam et al.
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Received 28 April 1987

We report on new measurements of the Λ and proton branching fractions and momentum spectra from B-meson decay. The large Λ-to-p ratio, the absence of B→ΛΛ¯X, and the presence of Λ-lepton charge correlations suggest that charmed baryons are produced in B decay. Under the assumption that all of the observed baryons are associated with charmed-baryon production, we find a B–to–charmed-baryon branching fraction of (7.4±2.9)%.


©1987 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.59.22
DOI: 10.1103/PhysRevLett.59.22
PACS: 13.25.+m

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