Affordable Access

Publisher Website

Weak Meson-exchange currents and the tritium βdecay

Authors
Journal
Nuclear Physics A
0375-9474
Publisher
Elsevier
Publication Date
Volume
531
Identifiers
DOI: 10.1016/0375-9474(91)90744-q
Disciplines
  • Philosophy

Abstract

Abstract Meson-exchange corrections of the nuclear axial current are derived and expanded up to relativistic order ( 1 m N ) 2 . They are obtained from a phenomenological chiral-invariant lagrangian based on the exchange of π-, ϱ- and A 1-mesons. The axial exchange currents are appropriate for general calculations of weak nuclear properties. The paper tests them for the Gamow-Teller matrix element of tritium β-decay. The theoretical prediction of the Gamow-Teller matrix element is, within the theoretical uncertainty, in fair agreement with its experimental value.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments