Search for B --> mu anti-muon-neutrino gamma and B --> e anti-electron-neutrino gamma
- SLAC
We have searched for the decays B {yields} {mu}{bar {nu}}{sub {mu}}{gamma} and B {yields} e{bar {nu}}{sub e}{gamma} in a sample of 2.7 million charged B decays collected with the CLEO II detector. In the muon channel, we observe no candidates in the signal region and set an upper limit on the branching fraction of {Beta}(B {yields} {mu}{bar {nu}}{sub {mu}}{gamma}) < 5.2 x 10{sup -5} at the 90% confidence level. In the electron channel, we observe 5 candidates in the signal region and set an upper limit on the branching fraction of {Beta}(B {yields} e{bar {nu}}{sub e}{gamma}) < 2.0 x 10{sup -4} at the 90% confidence level.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 813337
- Report Number(s):
- SLAC-PUB-9820
- Country of Publication:
- United States
- Language:
- English
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