### Abstract

We present new measurements of [Formula Presented] semileptonic form factors using data collected in 1997 by the KTeV (E832) experiment at Fermilab. The measurements are based on [Formula Presented] [Formula Presented] and [Formula Presented] [Formula Presented] decays. For [Formula Presented], we measure both a linear and quadratic term: [Formula Presented] and [Formula Presented]. For [Formula Presented], we find [Formula Presented]. These form factors are consistent with [Formula Presented] form factors, suggesting that isospin symmetry breaking effects are small. We use our measured values of the form factors to evaluate the decay phase space integrals, [Formula Presented] and [Formula Presented], where errors include uncertainties arising from the form factor parametrizations.

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

Volume | 70 |

Issue number | 9 |

DOIs | |

State | Published - Jan 1 2004 |

### 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*,

*70*(9). https://doi.org/10.1103/PhysRevD.70.092007