# Tilde do not cover all variable

With this my equation:

$$\label{eq:new-ri} \tilde{RI} = \frac{RI(v)}{\hat{q}v^\gamma},$$


I have this result:

QUESTION: Is possible obtain a more large tilde which covers all the variable {RI}?

\documentclass[a4paper,12pt]{article}
$$\label{eq:new-ri} \widetilde{RI} = \frac{RI(v)}{\hat{q}v^\gamma},$$