The standard \(L\)-function for \(G_2\): a "new way"

We consider a Rankin-Selberg integral representation of a cuspidal (not necessarily generic) representation of the exceptional group $G_2$. Although the integral unfolds with a non-unique model, it turns out to be Eulerian and represents the standard $L$-function of degree 7. We discuss a general approach to the integrals with non-unique models. The integral can be used to describe the representations of $G_2$ for which the (twisted) $L$-function has a pole as functorial lifts. This is a joint work with Avner Segal.