Beta-alpha angular correlations in mass 8 Academic Article uri icon

abstract

  • A detailed study of the - angular correlations in the Li8(-) and B8(+) decays was performed. Since these decays proceed to the 2 continuum, detection of both alpha particles enabled determination of various correlations as functions of the final-state energy. The experimental results show a small ( 15% of weak magnetism) deviation from the conserved vector current prediction which is dependent on the final-state energy. An effect of this size cannot be interpreted as convincing evidence for the presence of second-class currents or a breakdown of conserved vector current theory. However, the inclusion of the vector second-forbidden terms in the nuclear weak current as predicted by the conserved vector current theory is crucial to obtain even approximate agreement with the experimental results. RADIOACTIVITY Li8, B8; measured angular correlation, final-state energy dependence. Model independent test of CVC and second-class currents. © 1980 The American Physical Society.

author list (cited authors)

  • McKeown, R. D., Garvey, G. T., & Gagliardi, C. A.

citation count

  • 30

publication date

  • August 1980