Measurement of tau decays involving eta mesons

Artuso, M.; Goldberg, M.; Horwitz, N.; Kennett, R.; Moneti, G.C.; Muheim, F.; Playfer, S.; Rozen, Y.; Rubin, P.; Stone, S.

doi:10.1103/PhysRevLett.69.3278

Measurement of tau decays involving eta mesons

CLEO

Collaboration

•

M. Artuso

Aug 17, 1992

13 pages

Published in:

Phys.Rev.Lett. 69 (1992) 3278-3281

DOI:

10.1103/PhysRevLett.69.3278

PDG:

{{\mathit \tau}^{-}}

\rightarrow

{{\mathit \eta}}{{\mathit K}^{-}}{{\mathit \nu}_{{{\tau}}}}

Report number:

CLNS-92-1159,
CLEO-92-07

Experiments:

CESR-CLEO-II

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Abstract: (APS)

The decay τ−→ντπ−π0η 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−→π+π−η data. Upper limits on the branching ratios for other τ decays to final states including η mesons are improved by an order of magnitude compared to previous measurements.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
tau: electroproduction
electroproduction: tau
tau: pair production
pair production: tau
tau-: semileptonic decay
semileptonic decay: tau-

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