Alignment correlation term in mass A = 8 system and G-parity irregular term
Department of Physics, Osaka University, Osaka 560-0043, Toyonaka, Japan
2 TRIUMF, 4004 Wesbrook Mall, BC, V6T 2A3, Vancouver, Canada
3 Department of Physics, Saitama University, Saitama 338-8570, Japan
* e-mail: email@example.com.
Accepted: 22 February 2005
Published online: 3 May 2005
The pure nuclear spin alignments of 8Li and 8B were produced from the nuclear spin polarization applying the β-NMR method. The alignment correlation terms in the β-ray angular distribution of the mirror pair 8Li and 8B were observed to limit the G parity irregular term in the weak nuclear current. The significant deviation due to the forbidden matrix elements between the alignment correlation terms and the β-α correlation terms was observed. The determination of the alignment correlation terms was essential to extract the G-parity violating induced tensor term without the influence of the forbidden term in the vector current.
PACS: 11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries – / 23.40.Bw Weak-interaction and lepton (including neutrino) aspects – / 27.20.+n 6≤A ⩽ 19 –
© Società Italiana di Fisica and Springer-Verlag, 2005