Inspired from this question, Change vertical space in overset you can add a ''spring'' symbol above a character.
With \gluon symbol.

\documentclass{article}
\usepackage{mathtools,amssymb}
\usepackage{wasysym}
\usepackage{graphicx}
\usepackage{scalerel}
\begin{document}
\[\overset{\lower.3em\hbox{\,\scaleobj{.4}{\gluon}}}{A}\]
\end{document}
With \photon symbol.

\documentclass{article}
\usepackage{mathtools,amssymb}
\usepackage{wasysym}
\usepackage{graphicx}
\begin{document}
\[\overset{\lower.1em\hbox{\,\scalebox{.5}[2.1]{\photon}}}{A}\]
\end{document}
\lfiletofmathabx, but horizontal? – egreg May 08 '18 at 21:52\hzigzag? – corey979 May 08 '18 at 22:03