How do I make the tilde encompass two variables?

Question

I want to put a tilde above $ \tilde{L_1}^{T}\omega_1 $ such that it encompasses these two variable. How do I do that? My approach here puts two separate \tilde on L_1 and the transpose T

$$\frac{\partial \text{T}{\partial C_{N1} } = \tilde{\tilde{L_1}^{T}\omega_1}$$

Answer 1

\widetilde but do not use $$ in LaTex and don't use \text for math variables as that picks up the current text font.

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\frac{\partial \mathrm{T}}{\partial C_{N1} } = \widetilde{\tilde{L_1}^{\!\mathrm{T}}\omega_1}
\]
\end{document}