Kurasawa Haruki, Suzuki Toshio, Giai Nguyen Van
Department of Physics, Faculty of Science, Chiba University, Chiba 263-8522, Japan.
Phys Rev Lett. 2003 Aug 8;91(6):062501. doi: 10.1103/PhysRevLett.91.062501. Epub 2003 Aug 7.
The issue of the Gamow-Teller sum rule in atomic nuclei is reexamined in the framework of a relativistic description of nuclei. It is shown that the total Gamow-Teller strength in the nucleon sector is reduced by about 12% as compared to the prediction of a nonrelativistic description. This reduction is due to the antinucleon degrees of freedom.
