## Abstract

We search for (Formula presented) nonconservation in the decays of (Formula presented) leptons produced via (Formula presented) annihilation at (Formula presented) GeV. The method uses correlated decays of pairs of (Formula presented) leptons, each decaying to the (Formula presented) final state. The search is done within the framework of a model with a scalar boson exchange. In an analysis of a data sample corresponding to (Formula presented) produced (Formula presented) pairs collected with the CLEO detector, we find no evidence of violation of (Formula presented) symmetry. We obtain a limit on the imaginary part of the coupling constant parametrizing the relative contribution of diagrams that would lead to (Formula presented) violation to be (Formula presented) at (Formula presented) C.L. This result provides a restriction on (Formula presented) nonconservation in tau lepton decays. As a cross-check, we study the decay angular distribution and perform a model-independent search for a (Formula presented) violation effect of a scalar exchange in single (Formula presented) decays. The limit on the imaginary part of the (Formula presented) scalar coupling is (Formula presented) at 90% C.L.

Original language | English (US) |
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Pages (from-to) | 16 |

Number of pages | 1 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 64 |

Issue number | 9 |

DOIs | |

State | Published - 2001 |

## ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)