Published February 1, 1992 | Version v1
Journal article

Measurement of baryon production in B-meson decay

Creators

  • 1. Vanderbilt University, Nashville, Tennessee 37235 (United States)
  • 2. Syracuse University, Syracuse, New York 13244 (United States)
  • 3. State University of New York at Albany, Albany, New York 12222 (United States)
  • 4. University of Rochester, Rochester, New York 14627 (United States)
  • 5. Purdue University, West Lafayette, Indiana 47907 (United States)
  • 6. Ohio State University, Columbus, Ohio 43210 (United States)

Description

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 bar B→Λc+X with Λc+→pK-π+, we find that the product branching fraction B(bar B→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(bar B→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)%

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
45
Journal Issue
3
Series
Phys. Rev., D Part. Field.
Journal Page Range
752-770
ISSN
0556-2821
CODEN
PRVDA