Search for the decay B+→τ+ντ
Abstract
We search for the rare leptonic decay B+→τ+ντ in a sample of 232×106 BB¯ pairs collected with the BABAR detector at the SLAC PEP-II B-Factory. Signal events are selected by examining the properties of the B meson recoiling against the semileptonic decay B-→D*0ℓ-ν¯ℓ. We find no evidence for a signal and set an upper limit on the branching fraction of B(B+→τ+ντ)<2.8×10-4 at the 90% confidence level. We combine this result with a previous, statistically independent BABAR search for B+→τ+ντ to give an upper limit of B(B+→τ+ντ)<2.6×10-4 at the 90% confidence level.
- Publication:
-
Physical Review D
- Pub Date:
- March 2006
- DOI:
- 10.1103/PhysRevD.73.057101
- arXiv:
- arXiv:hep-ex/0507069
- Bibcode:
- 2006PhRvD..73e7101A
- Keywords:
-
- 13.20.He;
- 14.40.Nd;
- 14.60.Fg;
- Decays of bottom mesons;
- Bottom mesons;
- Taus;
- High Energy Physics - Experiment
- E-Print:
- 7 pages, 1 postscript figues, submitted to PRD brief report