Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1999-02-03
Phys.Rev.D59:091303,1999
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLNS
Scientific paper
10.1103/PhysRevD.59.091303
We have searched for five decay modes of the tau lepton that simultaneously violate lepton and baryon number: tau -> anti-proton gamma, tau -> anti-proton pi0, tau -> anti-proton eta, tau -> anti-proton 2pi0, and tau -> anti-proton pi0eta. The data used in the search were collected with the CLEO II detector at the Cornell Electron Storage Ring (CESR). The integrated luminosity of the data sample is 4.7 fb^{-1}, corresponding to the production of 4.3 x 10^6 tau+tau- events. No evidence is found for any of the decays, resulting in much improved upper limits on the branching fractions for the two-body decays and first upper limits for the three-body decays.
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