Abstract
We report the results of a search for the leptonic decay D+'+ using the Mark III detector at the SLAC e+e- storage ring SPEAR. A data sample of 9.3 pb-1 collected at the (3770) resonance yields no signal events, corresponding to a 90%-confidence-level upper limit of 7.2×10-4 on the branching ratio B(D+'+). This represents an upper limit on the pseudoscalar decay constant fD of 290 MeV/c2.
Original language | English (US) |
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Pages (from-to) | 1375-1378 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 60 |
Issue number | 14 |
DOIs | |
State | Published - 1988 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)