X. Roca-Maza, G. Colo', H. Sagawa
A correct determination of the spin-isospin properties of the nuclear effective interaction should lead, among other improvements, to an accurate description of the Gamow-Teller Resonances (GTR). These nuclear excitations impact on a variety of physical processes: from the response in charge-exchange reactions of nuclei naturally present in the Earth, to the description of the stellar nucleosynthesis, and of the pre-supernova explosion core-collapse evolution of massive stars in the Universe. A reliable description of the GTR provides also stringent tests for neutrinoless double-$\beta$ decay calculations. We present a new Skyrme interaction as accurate as previous forces in the description of finite nuclei and of uniform matter properties around saturation density, and that accurately accounts for the GTR in ${}^{48}$Ca, ${}^{90}$Zr and ${}^{208}$Pb.
View original:
http://arxiv.org/abs/1205.3958
No comments:
Post a Comment