### Abstract

Using the CLEO II detector at CESR, we measure the (Formula presented) energy spectra in (Formula presented) decays that we compare with models of the (Formula presented) form factor. This form factor, especially at large (Formula presented) energies, may provide an explanation of the large rate for (Formula presented) Our data do not support a large anomalous coupling at higher (Formula presented) and thus the large (Formula presented) rate remains a mystery, possibly requiring a non-standard-model explanation.

Original language | English (US) |
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Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 67 |

Issue number | 5 |

DOIs | |

State | Published - Jan 1 2003 |

### ASJC Scopus subject areas

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

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## Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*67*(5). https://doi.org/10.1103/PhysRevD.67.052003