论文标题
连贯弹性和非弹性中微子核散射的横截面
Cross sections for coherent elastic and inelastic neutrino-nucleus scattering
论文作者
论文摘要
在连贯的弹性中微子中提取新物理信号的前景 - 核中散射（CE $ν$ ns）过程受到已知的基础核结构物理学的精确限制，该物理嵌入了弱核形态中。我们介绍了$^{12} $ c，$^{16} $ o，$^{40} $ ar，$^{56} $ fe和$^{56} $ fe and $^{208} $ pb nuclei的电荷和弱核形态和弱核形态和ce $ν$ ns交叉部分的计算。我们通过用Skyrme（SKE2）核电位求解Hartree- fock（HF）方程，从而获得质子和中子密度，并获得质量和弱型因子。我们通过比较$^{208} $ pb和$^{40} $ AR电荷形式预测与可用的弹性电子散射数据来验证我们的方法。由于CE $ν$ ns在停止的实验 - pion来源也非常适合测量无弹性充电 - 流动和中性 - 流动的中微子 - nucleus cross截面，我们还对这些过程进行了计算，并结合了连续性随机相位近似（CRPA）的描述。在一致的框架中，我们旨在在〜100 meV以下的能量区域中对这些过程的强度进行可靠且详细的比较。此外，我们试图通过比较最近的显微镜核理论之间的相对差异，并使用现象学形式的预测来评估与$^{40} $ AR形式和CE $ ns横截面有关的描述有关的理论不确定性水平。 CE $ν$ ns的未来精确度量将有助于限制这些核结构细节，从而改善提取新物理学的前景。
The prospects of extracting new physics signals in coherent elastic neutrino--nucleus scattering (CE$ν$NS) processes are limited by the precision with which the underlying nuclear structure physics, embedded in the weak nuclear form factor, is known. We present calculations of charge and weak nuclear form factors and CE$ν$NS cross sections on $^{12}$C, $^{16}$O, $^{40}$Ar, $^{56}$Fe and $^{208}$Pb nuclei. We obtain the proton and neutron densities, and charge and weak form factors by solving Hartree--Fock (HF) equations with a Skyrme (SkE2) nuclear potential. We validate our approach by comparing $^{208}$Pb and $^{40}$Ar charge form factor predictions with available elastic electron scattering data. Since CE$ν$NS experiments at stopped--pion sources are also well suited to measure inelastic charged--current and neutral--current neutrino--nucleus cross sections, we also present calculations for these processes, incorporating a continuum Random Phase Approximation (CRPA) description on top of the HF-SkE2 picture of the nucleus. Providing both coherent as well as inelastic cross sections in a consistent framework, we aim at obtaining a reliable and detailed comparison of the strength of these processes in the energy region below ~100 MeV. Furthermore, we attempt to gauge the level of theoretical uncertainty pertaining to the description of the $^{40}$Ar form factor and CE$ν$NS cross sections by comparing relative differences between recent microscopic nuclear theory and widely--used phenomenological form factor predictions. Future precision measurements of CE$ν$NS will potentially help in constraining these nuclear structure details that will in turn improve prospects of extracting new physics.
