Study of the decay Λc+→λl+νl
Using the CLEO II detector at CESR we observe 500 Λl+ pairs consistent with the semileptonic decay Λc+ → λ+ν We measure σ(e+e- → Λ+cX) · B(Λ+c → Λl+νl) = 4.77±0.25±0.66 pb. Combining with the charm semileptonic width and the lifetime of the Λc we also obtain B(Λ+c → pK-π+). We find no evidence for Λl+νl final states in which there are additional Λ+c decay products. We measure the decay asymmetry parameter of Λ+c → Λe+νe to be αΛc = -0.89+0.17+0.09-0.11-0.05. © 1994.
About this item
Creator - T. Bergfeld
- B. I. Eisenstein
- G. Gollin
- B. Ong
- M., Palmer
- M. Selen
- J. J. Thaler
- A. J. Sadoff
- R. Ammar
- S. Ball
- P. Baringer
- A. Bean
- D. Besson
- D. Coppage
- N. Copty
- R. Davis
- N. Hancock
- M. Kelly
- N. Kwak
- H. Lam
- Y. Kubota
- M. Lattery
- J. K. Nelson
- D. Patton
- D. Perticone
- R. Poling
- V. Savinov
- S. Schrenk
- R. Wang
- M. S. Alam
- I. J. Kim
Date - 1994-03-10
Bowdoin Department or Program - Physics and Astronomy
Access - Open access
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