Top anomalous magnetic moment and the two photon decay of Higgs
  We compute the dependence of the Higgs to two-photon decay rate $\Gamma_{h\to \gamma \gamma}$ on the top quark gyromagnetic factor $g_t$ in the heavy top limit and evaluate the expected change for one-loop SM correction to $g_t$. Our results are general and allow consideration of further modifications of $g_t$ and we predict the resultant $\Gamma_{h\to \gamma \gamma}$. 
Lance Labun and Johann Rafelski
hep-ph hep-ex