Search for the Rare Leptonic Decay B- -> tau- nubar
- SLAC
We present a search for the decay B{sup -} {yields} {tau}{sup -} {bar {nu}}{sub {tau}} in a sample of 88.9 x 10{sup 6} B{bar B}pairs recorded with the BABAR detector at the SLAC B-Factory. One of the two B mesons from the {Upsilon}(4S) is reconstructed in a hadronic or a semileptonic final state and the decay products of the other B in the event are analyzed for consistency with a B{sup -} {yields} {tau}{sup -} {bar {nu}}{sub {tau}} decay. We find no evidence of a signal and set an upper limit on the branching fraction of {Beta}(B{sup -} {yields} {tau}{sup -} {bar {nu}}{sub {tau}}) < 4.2 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:
- 827342
- Report Number(s):
- SLAC-PUB-10568
- Country of Publication:
- United States
- Language:
- English
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