Phys. Rev. Lett. 71, 1791 - 1795 (1993)

Measurement of the decay τ-→π-π+π-0ντ

Download: Page Images , PDF (753 kB), or Buy this Article (Use Article Pack) Export: BibTeX or EndNote (RIS)

D. Bortoletto et al.
Show All Authors/Affiliations

Received 6 July 1993

The decay τ-→π-π+π-0ντ has been observed in e+e- annihilation using the CLEO II detector at the Cornell Electron Storage Ring. In a data sample collected at √s ∼10.6 GeV, 668±38 decay candidates have been identified by exclusively reconstructing two π0’s accompanying three charged particles, which are assumed to be pions. Normalizing to the number of τ pairs detected with one charged particle recoiling against three charged particles, this yields a branching ratio of B3π2π0=(0.48±0.04±0.04)%. A signal of 430±33 events for the decay τ-→π-ωπ0ντ has also been observed, corresponding to a branching ratio of Bπωπ0=(0.39±0.04±0.04)%.


©1993 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.71.1791
DOI: 10.1103/PhysRevLett.71.1791
PACS: 13.35.+s, 14.60.Jj

[ Abstract  |  Previous article  |  Next article  |  Issue 12 ]