Study of the decay Λc⁺→λl⁺νl

Authors

T. Bergfeld, University of Illinois Urbana-Champaign
B. I. Eisenstein, University of Illinois Urbana-Champaign
G. Gollin, University of Illinois Urbana-Champaign
B. Ong, University of Illinois Urbana-Champaign
M. Palmer, University of Illinois Urbana-Champaign
M. Selen, University of Illinois Urbana-Champaign
J. J. Thaler, University of Illinois Urbana-Champaign
A. J. Sadoff, Ithaca College
R. Ammar, University of Kansas
S. Ball, University of Kansas
P. Baringer, University of Kansas
A. Bean, University of Kansas
D. Besson, University of Kansas
D. Coppage, University of Kansas
N. Copty, University of Kansas
R. Davis, University of Kansas
N. Hancock, University of Kansas
M. Kelly, University of Kansas
N. Kwak, University of Kansas
H. Lam, University of Kansas
Y. Kubota, University of Minnesota Twin Cities
M. Lattery, University of Minnesota Twin Cities
J. K. Nelson, University of Minnesota Twin Cities
D. Patton, University of Minnesota Twin Cities
D. Perticone, University of Minnesota Twin Cities
R. Poling, University of Minnesota Twin Cities
V. Savinov, University of Minnesota Twin Cities
S. Schrenk, University of Minnesota Twin Cities
R. Wang, University of Minnesota Twin Cities
M. S. Alam, State University of New York Albany
I. J. Kim, State University of New York Albany

Document Type

Article

Publication Date

3-10-1994

Abstract

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.

Recommended Citation

Bergfeld, T.; Eisenstein, B. I.; Gollin, G.; Ong, B.; Palmer, M.; Selen, M.; Thaler, J. J.; Sadoff, A. J.; Ammar, R.; Ball, S.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Copty, N.; Davis, R.; Hancock, N.; Kelly, M.; Kwak, N.; Lam, H.; Kubota, Y.; Lattery, M.; Nelson, J. K.; Patton, D.; Perticone, D.; Poling, R.; Savinov, V.; Schrenk, S.; Wang, R.; Alam, M. S.; and Kim, I. J., "Study of the decay Λc⁺→λl⁺νl" (1994). Physics Faculty Publications. 35.
https://digitalcommons.bowdoin.edu/physics-faculty-publications/35