Study of D+s-->φe+νe and the absolute D+s-->φπ+ branching fraction
Abstract
We have searched for the decay D+s-->φe+νe in data from the Fermilab charm photoproduction experiment E691. The resulting upper limit is B(D+s-->φe+νe)<0.45B(D+s-->φπ+). Since the branching fraction for D+s-->φe+νe can be calculated from the measured branching fraction B(D+-->K¯ *0e+νe) to be (1.7+/-0.3)%, this implies a 90%-confidence-level lower limit on B(D+s-->φπ+) of 3.4%.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 1990
- DOI:
- 10.1103/PhysRevLett.64.2885
- Bibcode:
- 1990PhRvL..64.2885A
- Keywords:
-
- 13.20.Fc;
- 14.40.Jz;
- Decays of charmed mesons