Studies of the Cabibbo-Suppressed Decays D+ -> pi0 lepton+ neutrino and D+ -> eta e+ electron-neutrino
- SLAC
Using 4.8 fb{sup -1} of data taken with the CLEO II detector, the branching fraction for the Cabibbo suppressed decay D{sup +} {yields} {pi}{sup 0}{ell}{sup +}{nu} measured relative to the Cabibbo favored decay D{sup +} {yields} {bar K}{sup 0}{ell}{sup +}{nu} is found to be 0.046 {+-} 0.014 {+-} 0.017. Using V{sub cs} and V{sub cd} from unitarity constraints, we determine |f{sub +}{sup {pi}}(0)/f{sub +}{sup K} (0)|{sup 2} = 0.9 {+-} 0.3 {+-} 0.3 We also present a 90% confidence level upper limit for the branching ratio of the decay D{sup +} {yields} {eta}e{sup +}{nu}{sub e} relative to that for D{sup +} {yields} {pi}{sup 0}e{sup +}{nu}{sub e} of 1.5.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515;
- OSTI ID:
- 813090
- Report Number(s):
- SLAC-PUB-9793
- Country of Publication:
- United States
- Language:
- English
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