Study of Semileptonic Decays of B Mesons to Charmed Baryons

Abstract

Using data collected by the CLEO II detector at the center-of-mass energy on or near the Upsilon(4S) resonance, we have determined the 90% confidence level upper limit B(Bbar --> Lambda_c^+ e- X)/B(Bbar --> Lambda_c^+ X, Lambdabar_c^- X) < 0.05 for electrons with momentum above 0.6 GeV/c. We have also derived the ratio B(B^- --> Lambda_c^+ pbar e- nubar_e)/B(Bbar --> Lambda_c^+ pbar X) < 0.04 at the 90% confidence level and measured the ratio B(Bbar --> Lambda_c^+ pbar X)/B(Bbar --> Lambda_c^+ X, Lambdabar_c^- X) = 0.57 +- 0.05 +- 0.05.

9 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLNS

Cited by in corpus (5)

• Pathways to Rare Baryonic B Decays
• Measurement of the Lambda_b^0 Decay Form Factor
• Heavy Baryon Production and Decay
• Search for Bbar --> Lambda_c+ X l- nu Decays in Events With a Fully Reconstructed B Meson
• Search for B->pbar e nuebar X Decay using a Partial Reconstruction Method