K. Abe, for the Belle Collaboration
Published 2004-08-30Version 1
We present a search for the decay B -> tau nu in a 140 fb^-1 data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric B factory. Combinatorial and continuum backgrounds are suppressed by selecting a sample of events with one fully reconstructed B. The decay products of the other side B in the event are analyzed to search for a B -> tau nu decay. We find no significant evidence for a signal and set a 90% confidence level upper limit of Br(B -> tau nu) < 2.9 * 10^-4. All results are preliminary.
Comments: 11 pages, 5 figures, submitted to ICHEP2004, Beijing, China
B \to X_s \ell^+ \ell^- at Belle
Study of B+- --> D_CP K+- and D^*_CP K+- decays
Observation of the decay $B_s^0\to J/ψη$ and Evidence for $B_s^0\to J/ψη'$
