Axial-Charge Transit Ions: Relativistic Study of One and Two-Body Contributions

E. D. Izquierdo

Chinese Journal of Physics

32卷6S期（1994 / 12 / 01）

1425 - 1434

英文

Two recent experiments which isolate the axial charge, both in the nuclear medium and in free space, appear to necessitate the presence of heavy scalar mesons. In this contribution we present both experiments and their possible explanation. Heavy scalar mesons are a feature of relativistic models. In the framework of quantum hadrodynamics we analyze the one-body contribution, the response of the core and the effects due to meson exchange currents for the experiment with medium dependence.