我希望费曼图中箭头的方向在最终状态下从 C 到 D。任何有关如何克服此问题的指导或建议都将不胜感激。提前感谢您的帮助。
\documentclass{standalone}
\usepackage[compat=1.0.0]{tikz-feynman}
\begin{document}
\feynmandiagram [horizontal=a to b] {
i1 -- [charged scalar, momentum'=\(\vec{p}_1\)] a -- [charged scalar, momentum'=\(\vec{p}_3\)] i2,
a [below right, label=\( \)] -- [charged scalar, momentum'=\(q\)] b,
f1 [particle=\(D\)] -- [charged scalar, momentum'=\(\vec{p}_2\)] b -- [charged scalar, momentum'=\(\vec{p}_4\)] f2 [particle=\(C\)],
};
\end{document}