Formula_2099

\[\begin{gathered}I(g, m) \sim \sum_{n=0}^{\infty} a_{n} g^{n} \\a_{n}=\pi^{-1 / 2}\left(-1 / 6 m^{4}\right)^{n} \Gamma(2 n+1 / 2) / \Gamma(n+1)= \\=\left(-2 / 3 e m^{4}\right)^{n} n^{n}(\pi n)^{-1 / 2}(1+O(1 / n))\end{gathered}\]