How can I typeset this equation (standard model of physics)? [duplicate]

Question

So, there's this picture

Floating around on the internet for the standard model of physics in a relatively short form. I want to typeset this in LaTeX in order to print it. However, I can't find a way to typeset the crossed out D in the second line.

So far, I have this

    \documentclass[a4paper,10pt]{scrartcl} 

    \usepackage{amsmath,amssymb}

    \begin{document}
    What part of

    \begin{align*}
    \mathcal{L} &= - \frac{1}{4} F_{\mu \nu} F^{\mu \nu} \\
        &+ i \bar{\psi} D \psi + h.c. \\
        &+ \bar{\psi}_i y_{ij} \psi_j \phi + h.c. \\
        &+ |D_\mu \phi|^2 - V(\phi)
    \end{align*}

    didn't you understand?

    \end{document}

Answer 1

You can use cancel package.

\documentclass[a4paper,10pt]{scrartcl}

\usepackage{amsmath,amssymb,cancel}

\begin{document}
What part of

\begin{align*}
\mathcal{L} &= - \frac{1}{4} F_{\mu \nu} F^{\mu \nu} \\
    &\phantom{{}=}+ i \bar{\psi} \cancel{D} \psi + h.c. \\
    &\phantom{{}=}+ \bar{\psi}_i y_{ij} \psi_j \phi + h.c. \\
    &\phantom{{}=}+ |D_\mu \phi|^2 - V(\phi)
\end{align*}

didn't you understand?

\end{document}