G-parity irregular current in the β decays of the mass A = 12 system - With the refined empirical value of the weak magnetism

K. Minamisono, K. Matsuta, T. Minamisono, T. Yamaguchi, T. Sumikama, T. Nagatomo, M. Ogura, T. Iwakoshi, M. Mihara, M. Fukuda, K. Koshigiri, M. Morita

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3 Citations (Scopus)

Abstract

The β-ray angular distribution from the purely spin aligned mirror pair of 12B and 12N were precisely remeasured and the G-parity irregular induced tensor coefficient in the weak nucleon axial vector current was determined to be 2MfT/fA = -0.15±0.12±0.05(theory) at a 90% confidence level. In the extraction of the result, the refined empirical value of the weak magnetism a = (4.04 ± 0.03)/2M and the theoretical calculation of the charge asymmetry in the axial charge Δy = 0.10 ± 0.05(theory) were used.

Original languageEnglish
Pages (from-to)C477-C480
JournalNuclear Physics A
Volume721
DOIs
Publication statusPublished - 2003 Jun 30

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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