Branching Fractions of $τ$ Leptons to Three Charged Hadrons

From electron-positron collision data collected with the CLEO detector operating at Cornell Electron Storage Ring near

\sqrt{s} = 10.6 G e V

, improved measurements of the branching fractions for

τ

decays into three explicitly identified hadrons and a neutrino are presented as

B (τ^{-} \to π^{-} π^{+} π^{-} ν_{τ}) = (9.13 \pm 0.05 \pm 0.46) %

B (τ^{-} \to K^{-} π^{+} π^{-} ν_{τ}) = (3.84 \pm 0.14 \pm 0.38) \times 10^{- 3}

B (τ^{-} \to K^{-} K^{+} π^{-} ν_{τ}) = (1.55 \pm 0.06 \pm 0.09) \times 10^{- 3}

, and

B (τ^{-} \to K^{-} K^{+} K^{-} ν_{τ}) < 3.7 \times 10^{- 5}

at 90% C.L., where the uncertainties are statistical and systematic, respectively.

This publication has 24 references indexed in Scilit:

The CLEO III drift chamber
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2002
Strange quark mass from the invariant mass distribution of Cabibbo-suppressed tau decays
The European Physical Journal C, 2001
Strange-quark mass from combined e+e− and τ-decay data: test of the isospin symmetry and implications on ϵ′/ϵ and mu,d
Physics Letters B, 1999
Strange quark mass determination from Cabibbo-suppressed tau decays
Journal of High Energy Physics, 1999
Study of
The European Physical Journal C, 1999
The CLEO II silicon vertex detector
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1998
The CLEOIII ring imaging Cherenkov detector
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996
Measuring the Wess-Zumino anomaly inτdecays
Physical Review D, 1993
The CLEO II detector
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992
Consequences of anomalous ward identities
Physics Letters B, 1971

Branching Fractions ofτLeptons to Three Charged Hadrons