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Phys. Rev. D 59, 091303(R) (1999) [4 pages]

Search for baryon and lepton number violating decays of the τ lepton

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R. Godang et al. (CLEO Collaboration)
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Received 15 December 1998; published 2 April 1999

We have searched for five decay modes of the τ lepton that simultaneously violate lepton and baryon number: τ-p̅ γ, τ-p̅ π0, τ-p̅ η, τ-p̅ 2π0, and τ-p̅ π0η. The data used in the search were collected with the CLEO II detector at the Cornell Electron Storage Ring. The integrated luminosity of the data sample is 4.7 fb-1, corresponding to the production of 4.3×106τ+τ- 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.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.59.091303
DOI:
10.1103/PhysRevD.59.091303
PACS:
13.35.Dx, 14.60.Fg