Measurement of tau-decays involving eta-mesons

Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H.

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Issue Date

1992-12

Author

Ammar, Raymond G.

Ball, S.

Baringer, Philip S.

Coppage, Don

Copty, N.

Davis, Robin E. P.

Hancock, N.

Kelly, M.

Kwak, Nowhan

Lam, H.

Publisher

AMERICAN PHYSICAL SOC

Type

Article

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Abstract

The decay tau- --> nu(tau)pi-pi0eta has been observed for the first time using the CLEO-II detector at the Cornell Electron Storage Ring. The measured branching ratio (0.17 +/- 0.02 +/- 0.02)%, agrees with the CVC (conserved vector current) prediction based on e+e- --> pi+pi-eta data. Upper limits on the branching ratios for other tau decays to final states including eta mesons are improved by an order of magnitude compared to previous measurements.

URI

http://hdl.handle.net/1808/1464

Collections

Physics and Astronomy Scholarly Works [1636]

Citation

ARTUSO, M, GOLDBERG, M.et al. Measurement of tau-decays involving eta-mesons. PHYSICAL REVIEW LETTERS. December 1992. 69(23) : 3278-3281

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