Measurement of cabibbo-suppressed decays of the tau lepton

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Issue Date
1994-08Author
Ammar, Raymond G.
Ball, S.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Copty, N.
Davis, Robin E. P.
Hancock, N.
Kelly, M.
Kwak, Nowhan
Lam, H.
Publisher
AMERICAN PHYSICAL SOC
Type
Article
Published Version
http://publish.aps.org/Metadata
Show full item recordAbstract
Branching ratios for the dominant Cabibbo-suppressed decays of the tau lepton have been measured by CLEO II in e+e- annihilation at the Cornell Electron Storage Ring (square-root s approximately 10.6 GeV) using kaons with momenta below 0.7 GeV/c. The inclusive branching ratio into one charged kaon is (1.60 +/- 0.12 +/- 0.19)%. For the exclusive decays, B(tau- --> K- nu(tau)) = (0.66 +/- 0.07 +/- 0.09)%, B(tau- --> K-pi0nu(tau) = (0.51 +/- 0.10 +/- 0.07)%, and, based on three events, B(tau- --> K-2pi0nu(tau) < 0.3% at the 90% confidence level. These represent significant improvements over previous results. B(tau- --> K- pi0nu(tau)) is measured for the first time with exclusive pi0 reconstruction.
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Citation
BATTLE, M, ERNST, J, et al. Measurement of cabibbo-suppressed decays of the tau lepton. PHYSICAL REVIEW LETTERS. August 1994. 73(8) : 1079-1083
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