Study of the five-charged-pion decay of the τ lepton
The branching fractions for the five-charged-particle decays of the τ lepton have been measured in e+e- annihilations using the CLEO II detector at the Cornell Electron Storage Ring. Assuming all charged particles to be pions, the results are B(3π-2π+0 neutrals ντ)=(0.097±0. 005±0.011)%, B(3π-2π+ντ)=(0.077±0.005 ±0.009)%, B(3π-2π+π0ντ)=(0.019±0.004±0.004) %, and B(3π-2π+2π0ντ)<0.011% at the 90% C.L. B(3π-2π-π0ντ) is measured for the first time by exclusive π0 reconstruction. The results are compared with the predictions from the partially conserved-axial-current and conserved-vector-current hypotheses assuming isospin invariance. © 1994 The American Physical Society.
About this item
Creator - D. Gibaut
- K. Kinoshita
- B. Barish
- M. Chadha
- S., Chan
- D. F. Cowen
- G. Eigen
- J. S. Miller
- C. O'Grady
- J. Urheim
- A. J. Weinstein
- D. Acosta
- M. Athanas
- G. Masek
- H. P. Paar
- J. Gronberg
- R. Kutschke
- S. Menary
- R. J. Morrison
- S. Nakanishi
- H. N. Nelson
- T. K. Nelson
- C. Qiao
- J. D. Richman
- A. Ryd
- H. Tajima
- D. Sperka
- M. S. Witherell
- M. Procario
- R. Balest
- K. Cho
Date - 1994-01-01
Bowdoin Department or Program - Physics and Astronomy
Access - Open access
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