## Abstract

The G-parity irregular induced tensor form factor in the weak nucléon a×ial vector current has been precisely determined by measuring the alignment correlation terms in the βray angular distributions of the purely spin aligned mirror pair ^{12}B and ^{12}N, The coefficient of the induced tensor term was determined to be 2Mf _{T}f_{A} = -0.21 ±0.09 (stat.) ±0.07 (syst.) ± 0.05 (theory) at a 90% confidence level. The previously obtained data in the year 1996 was reanalyzed to be added to the present result. The combined result is 2Mf_{T}f_{A} = -0.15 ± 0.12 ±0.05 (theory) at a 90% confidence level. The obtained induced tensor coefficient is vanishingly small. In order to derive these numerical values from the e×perimental data the weak magnetism and a×ial charge, and also their charge dependence should be known. Theoretical investigation on these quantities is clearly described. Also we set constraints on the Kubodera-Delorme-Rho parameters from the present result together with the results of correlation-type e×periments in the mass A = 8 and 20 systems as ς= -(0.12 ±0.14) × 10^{-3} MeV^{-1} and X = + (0.30 ±0.88) × 10^{-3} in the 1 σ level.

Original language | English |
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Title of host publication | Beyond the desert 2002:Accel., Non-accelerator and Space Appr. in the New Millennium - Proc. of the Third Int. Conf. on Part. Phys. Beyond the Standard Model |

Subtitle of host publication | Accel. and Non-Accel. and Space Appr. |

Editors | H.V. Klapdor-Kleingrothaus |

Pages | 695-700 |

Number of pages | 6 |

Publication status | Published - 2003 Dec 1 |

Event | Beyond the desert 2002:Accel., Non-accelerator and Space Appr. in the New Millennium - Proc. of the Third Int. Conf. on Part. Phys. Beyond the Standard Model: Accel. and Non-Accel. and Space Appr. - Oulu, Finland Duration: 2002 Jun 2 → 2002 Jun 7 |

### Other

Other | Beyond the desert 2002:Accel., Non-accelerator and Space Appr. in the New Millennium - Proc. of the Third Int. Conf. on Part. Phys. Beyond the Standard Model: Accel. and Non-Accel. and Space Appr. |
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Country/Territory | Finland |

City | Oulu |

Period | 02/6/2 → 02/6/7 |

## ASJC Scopus subject areas

- Engineering(all)

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