Phys. Rev. Lett. 59, 1993–1996 (1987)Production of η and ω mesons in τ decay and a search for second-class currentsReceived 29 July 1987; published in the issue dated 2 November 1987 The production of η and ω mesons in τ decay has been studied with the CLEO detector. A sample of 42 000 e+e-→τ+τ- events at a mean √s of 10.5 GeV is used in the analysis. The branching ratio B(τ-→ωπ-ντ) is measured to be (1.60±0.27±0.41)%. No signal for η production from τ decay is observed, resulting in 95%-confidence-level upper limits of 1.8% for B(τ-→ηπ-ντ), 2.1% for B(τ-→ηπ-π0ντ), and 2.1% for inclusive η production in τ decay. No evidence is found for decays proceeding via second-class currents. © 1987 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.59.1993
DOI:
10.1103/PhysRevLett.59.1993
PACS:
13.35.+s, 14.60.Jj
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