## 抄録

Inclusive baryon-antibaryon pair production was studied in two-photon events which were collected at the e^{ +} e^{ -} collider TRISTAN, and correspond to an integrated luminosity of 303 pb^{-1}. Correlations between a baryon and an antibaryon were studied for their flavors (p or Λ) and their momentum vectors. The experimental results were compared with the expectations from a jet-fragmentation Monte Carlo simulation. We have found that although the ratios of the cross sections of different baryon-flavor combinations are consistent with the Monte Carlo expectations, the cross section shows an excess over the Monte Carlo expectation in a low invariant-mass region of final-state particles at large angles, that indicates a significant contribution from higher-order QCD or non-perturbative effects. The experimental data show no narrow azimuthal-angle correlation, which is expected from a jet-fragmentation Monte Carlo. A search for exclusive Λ pair production has also been made. We have no candidates and have obtained the upper limit for the cross section.

本文言語 | 英語 |
---|---|

ページ（範囲） | 597-606 |

ページ数 | 10 |

ジャーナル | Zeitschrift für Physik C: Particles and Fields |

巻 | 69 |

号 | 1 |

DOI | |

出版ステータス | 出版済み - 12月 1995 |

外部発表 | はい |

## !!!All Science Journal Classification (ASJC) codes

- 物理学および天文学（その他）