Study of the decay D+-->K¯0¯e+νe
Abstract
We have studied the exclusive semileptonic decay mode D+-->K¯0e+νe in the Fermilab photoproduction experiment E691. We find the ratio of B(D+-->K¯0e+νe)/B(D+-->K-π+π+) to be 0.66+/-0.09+/-0.14, corresponding to a D+-->K¯0e+νe branching ratio of 6.1+/-0.9+/-1.6)%. Combining this result with our measurement of the D+ lifetime, we find Γ(D+-->K¯0e+νe)=(5.6+/-0.8+/-1.5)×1010 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.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 1991
- DOI:
- 10.1103/PhysRevLett.67.1507
- Bibcode:
- 1991PhRvL..67.1507A
- Keywords:
-
- 13.20.Fc;
- 14.40.Jz;
- Decays of charmed mesons