Published September 16, 1991 | Version v1
Journal article

Study of the decay D+→ bar Kbar0e+νe

  • 1. Yale University, New Haven, Connecticut (USA)
  • 2. Universidade de Sao Paulo, Sao Paulo, Brazil University of Toronto, Toronto, Ontario (Canada)
  • 3. National Research Council, Ottawa, Ontario, Canada K1A 0R6 Princeton University, Princeton, New Jersey (USA)
  • 4. University of Mississippi, Oxford, Mississippi (USA)
  • 5. Fermi National Accelerator Laboratory, Batavia, Illinois (USA)
  • 6. University of Colorado, Boulder, Colorado (USA)
  • 7. Centro Brasileiro de Pesquisas Fisica, Rio de Janeiro, Brazil University of Cincinnati, Cincinnati, Ohio (USA)
  • 8. Carleton University, Ottawa, Ontario (Canada)
  • 9. University of California, Santa Barbara, California (USA)

Description

We have studied the exclusive semileptonic decay mode D+→ bar K0e+νe in the Fermilab photoproduction experiment E691. We find the ratio of B(D+→ bar K0e+νe)/B(D+→K-π+π+) to be 0.66±0.09±0.14, corresponding to a D+→ bar K0e+νe branching ratio of 6.1±0.9±1.6%. Combining this result with our measurement of the D+ lifetime, we find Γ(D+→ bar K0e+νe)=(5.6±0.8±1.5)x1010 s-1. We also find, using E691 averages, the ratio of decay rates Γ(D→K*eν)/Γ(D→Keν) to be 0.55±0.14

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
67
Journal Issue
12
Series
Phys. Rev. Lett.
Journal Page Range
1507-1510
ISSN
0031-9007
CODEN
PRLTA