论文部分内容阅读
Neutralino是宇宙冷暗物质的后选者之一。研究Neutralino和探测原子核的散射截面对Neutralino的辨认是很重要的。原子核结构对此散射截面有较大的影响。对力是原子核剩余相互作用的一个很重要的部分,对原子核的结构有重要的影响。该文采用超导理论中的BCS(Bardeen-Cooper-Schiefer)理论研究了对力对核结构及其对Neu-tralino-核散射截面的影响。研究结果表明,对力对奇质量数核的作用可以用准粒子激发表示。同单粒子相比较准粒子能级顺序发生了改变。而散射算符对准粒子态的矩阵元同相应的单粒子态的矩阵元完全一样。如果取实验观察到的基态单粒子轨道来计算该散射截面,在多数情况下就将对力相互作用考虑了进去。
Neutralino is one of the candidates for the cold and dark matter of the universe. It is important to study Neutralino and the detection of the nuclear cross section for Neutralino. Nuclear structure of the scattering cross section has a greater impact. Forcing is a very important part of the remaining nuclear interactions that have a major impact on the structure of the nucleus. In this paper, the BCS (Bardeen-Cooper-Schiefer) theory of superconductivity is used to study the force-versus-nucleus structure and its effect on the Neu-tralino-nuclear scattering cross section. The results show that the effect of force on odd QNCs can be expressed by quasi- particle excitation. Compared with the single-particle quasi-particle energy level order has changed. However, the matrix elements of the scattering operator aligned with the particle state are exactly the same as those of the corresponding single-particle state matrix elements. If we take the experimentally observed ground state single-particle orbit to calculate the scattering cross section, we will consider the force interaction in most cases.