论文标题
核反应中费米子探针与复合颗粒和BSM特征的张量相互作用的多极分解
Multipole decomposition of tensor interactions of fermionic probes with composite particles and BSM signatures in nuclear reactions
论文作者
论文摘要
横截面的多极分解是一种有用的工具，可简化由于其对称性能而对反应的分析。通过使用新方法在多极分析中分解反对称张量型相互作用，我们引入了一种一般的数学形式主义，用于使用张量耦合。这使我们能够提出一般的张量核反应，该反应对于正在进行的β-末期实验特别有用，该实验在标准模型之外寻找物理以及其他外来粒子散射，例如在暗物质直接检测实验中。使用此方法，除了标准模型运算符以外，与已知的标准模型运算符识别，无需计算其他矩阵元素。我们详细介绍了BSM表达式对β-末期实验有用的，并给出了6HEβ-Decay的示例应用，尽管形式主义易于推广用于计算其他异国情调的散射反应。
A multipole decomposition of a cross-section is a useful tool to simplify the analysis of reactions due to their symmetry properties. By using a new approach to decompose antisymmetric tensor-type interactions within the multipole analysis, we introduce a general mathematical formalism for working with tensor couplings. This allows us to present a general tensor nuclear response, which is particularly useful for ongoing beta-decay experiments looking for physics beyond the Standard Model, as well as other exotic particle scatterings off nuclei, e.g., in dark matter direct detection experiments. Using this method, beyond the Standard Model operators identify with the known Standard Model operators, eliminating the need for calculations of additional matrix elements. We present in detail BSM expressions useful for beta-decay experiments and give an exemplary application for 6He beta-decay, although the formalism is easily generalizable for calculating other exotic scattering reactions.
