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Electronic branching ratio of the τ lepton
Ammar, Raymond G. Baringer, Philip S. Coppage, Don Davis, Robin E. P. Kelly, M. Kwak, Nowhan Lam, H.
Ammar, Raymond G.
Baringer, Philip S.
Coppage, Don
Davis, Robin E. P.
Kelly, M.
Kwak, Nowhan
Lam, H.
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Abstract
Using data accumulated by the CLEO I detector operating at the Cornell Electron Storage Ring, we have measured the ratio R=Γ(τ→eν¯(e)ν(τ)) / Γ(1) where Γ(1) is the τ decay rate to final states with one charged particle. We find R=0.2231±0.0044±0.0073 where the first error is statistical and the second is systematic. Together with the measured topological one-charged-particle branching fraction, this yields the branching fraction of the τ lepton to electrons, Be=0.192±0.004±0.006.
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This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.45.3976.
Date
1992-06-01
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American Physical Society
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Baringer_6-1-1992.pdf
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R. Ammar et al. (1992). "Electronic branching ratio of the τ lepton." Physical Review D, 1991(45):3976. http://dx.doi.org/10.1103/PhysRevD.45.3976