论文标题
原子形态因素和轴支的逆Primakoff散射
Atomic Form Factors and Inverse Primakoff Scattering of Axion
论文作者
论文摘要
我们重新检查了轴的逆Primakoff散射，其散射横截面取决于靶原子中电子的分布。我们使用用相对论的Hartree-fock波函数计算的构造对其进行评估，并将其与基于原子中静电场的筛选库仑电位获得的先前结果进行比较。我们以Xenon为例，成为目标原子的一个例子，并表明散射横截面被$ \ syssim O（10）$ keV Energies（如太阳轴）的轴的数量级超过了。还发现，当动量传递的大小为$ \ sillsim 1 $ keV时，最终状态包含激发或电离原子的非弹性散射过程可能是可比性的，甚至可能是显着的。另一方面，对于更耗能的轴，发现总散射横截面可以通过简单的表达来很好地近似，并且对原子结构几乎没有依赖性。作为此结果的应用，我们考虑了超新星轴的能量为10-100 MEV，并表明$ O（1）$ o（1）$ iverse Primakoff事件在未来的Neutrino实验中，附近超级新闻的轴支轴是有必要的，这可能需要对此过程的搜索策略进行更详细的研究。
We reexamine the inverse Primakoff scattering of axions, whose scattering cross section depends on the distribution of electrons in target atoms. We evaluate it using a form factor computed with a relativistic Hartree-Fock wave function and compare it with the previous results obtained with those based on the screened Coulomb potential for the electrostatic field in the atom. We take xenon as an example for the target atom and show that the scattering cross section was overestimated by more than an order of magnitude for axions with $\lesssim O(10)$ keV energies, like solar axions. It is also found that inelastic scattering processes, in which the final state contains an excited or ionized atom, can be comparable or even be dominant when the size of momentum transfer is $\lesssim 1$ keV. For more energetic axions, on the other hand, the total scattering cross section is found to be well approximated by a simple expression and has little dependence on the atomic structure. As an application of this result, we consider supernova axions, whose energy is 10-100 MeV, and show that $O(1)$ inverse Primakoff events are expected for axions from a nearby supernova in the future neutrino experiments, which may warrant a more detailed study on the search strategy of this process.
