### Abstract

We present a series of measurements based on (Formula presented) and (Formula presented) decays collected in 1996–1997 by the (Formula presented) experiment (E832) at Fermilab. We compare these four (Formula presented) decay rates to measure the direct (Formula presented) violation parameter (Formula presented) We also test (Formula presented) symmetry by measuring the relative phase between the (Formula presented) violating and (Formula presented) conserving decay amplitudes for (Formula presented) (Formula presented) and for (Formula presented) (Formula presented) We find the difference between the relative phases to be (Formula presented) and the deviation of (Formula presented) from the superweak phase to be (Formula presented) both results are consistent with (Formula presented) symmetry. In addition, we present new measurements of the (Formula presented)-(Formula presented) mass difference and (Formula presented) lifetime: (Formula presented) and (Formula presented)

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

Volume | 67 |

Issue number | 1 |

DOIs | |

State | Published - Jan 27 2003 |

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### ASJC Scopus subject areas

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

### Cite this

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

*67*(1). https://doi.org/10.1103/PhysRevD.67.012005