An upper limit on the branching ratio for tau decays into seven charged particles
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We have searched for decays of the tau lepton into seven or more charged particles, using data collected with the OPAL detector from 1990 to 1995 in e^+e^- collisions at sqrt(s) ~ M_Z. No candidate events were found and an upper limit on the branching ratio for tau decays into seven charged particles of 1.8 x 10^-5 at the 95% confidence level was determined.
13 pages LaTeX, uses a4p.sty, 4 eps figures included, accepted by Physics Letters B
13 pages LaTeX, uses a4p.sty, 4 eps figures included, accepted by Physics Letters B