The
CLEO
collaboration
Giles, R.
;
Hassard, J.
;
Hempstead, M.
;
et al.
Phys.Rev.Lett. 50 (1983) 877, 1983.
https://inspirehep.net/literature/188803
Inspire Record
188803
DOI
10.17182/hepdata.20525
https://doi.org/10.17182/hepdata.20525
The branching fraction for the decay of the ϒ(1S) into τ paris has been measured to be (3.4±0.4±0.4)%. This result agrees with the previously measured branching ratio of the decay into muon pairs.