论文标题
$α$ -Nucleus光学潜力来自手学有效场理论$ nn $互动
$α$-nucleus optical potentials from chiral effective field theory $NN$ interactions
论文作者
论文摘要
我们提出了使用双重折叠方法对$^4 $ he-target碰撞的光学潜力的确定。我们使用手性有效的场理论在近代到领导顺序的核子核子相互作用与最先进的核音密度结合在一起。光电位的假想部分是通过比例常数或应用kramers-kronig分散关系从实际的双重折叠相互作用获得的。有了这些潜力，我们计算了$^4 $ HE的弹性散射，从$^4 $ HE到$^{120} $ sn。我们研究了我们预测的横截面对核子核子相互作用和核密度的选择的敏感性。与现有的弹性散发数据获得了非常好的协议，$^4 $ HE HE ENERGIES在100至400 MeV之间。
We present a determination of optical potentials for $^4$He-target collisions using the double-folding method. We use chiral effective field theory nucleon-nucleon interactions at next-to-next-to-leading order combined with state-of-the-art nucleonic densities. The imaginary part of the optical potential is obtained from the real double-folding interaction either through a proportionality constant or applying Kramers-Kronig dispersion relations. With these potentials, we compute the elastic scattering of $^4$He off various targets, from $^4$He to $^{120}$Sn. We study the sensitivity of our predicted cross sections to the choice of nucleon-nucleon interactions and nuclear densities. Very good agreement is obtained with existing elastic-scattering data for $^4$He energies between 100 and 400 MeV.
