## Abstract

The properties of hadronic Z^{0} decays with final state photons, measured with OPAL at LEP, have been compared with predictions from two different matrix element calculations of O(αα_{s}). Two calculations, GNJETS and EEPRAD, have been investigated which use different schemes to restrict the phase space around the poles of the cross section. Assuming the E0-JADE jet definition, both calculations describe the data well in large regions of phase space for y_{cut} values around 0.06. For very large and very small jet-photon masses some deviations from the predictions have been found, indicating the importance of higher order corrections. Significant differences between the calculations are only apparent in the predicted rate of 1-jet plus photon events. The rate is higher in GNJETS which reproduces the data better than EEPRAD.

Original language | English |
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Pages (from-to) | 15-26 |

Number of pages | 12 |

Journal | European Physical Journal C |

Volume | 67 |

Issue number | 1 |

DOIs | |

State | Published - 1 Mar 1995 |

Externally published | Yes |

## ASJC Scopus subject areas

- Physics and Astronomy (miscellaneous)

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