Measurement of baryon production in B meson decay

Collaboration
Apr, 1991
48 pages
Published in:
  • Phys.Rev.D 45 (1992) 752-770
Report number:
  • CLNS-91-1066,
  • CLEO-91-3
Experiments:

Citations per year

1991199920072015202205101520
Abstract: (APS)
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 B¯→Λc+X with Λc+→pK−π+, we find that the product branching fraction B(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(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)%.
  • electron positron: colliding beams
  • colliding beams: electron positron
  • electron positron: annihilation
  • annihilation: electron positron
  • Upsilon(10570): electroproduction
  • electroproduction: Upsilon(10570)
  • B: pair production
  • pair production: B
  • B: nonleptonic decay
  • nonleptonic decay: B