Top anomalous magnetic moment and the two photon decay of Higgs

Abstract

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 ${\Gamma }_{h\to \gamma \gamma }$.

Comments: 4 pages, 2 figures; v2, plot of decay rate expanded range; v3, updated with recent experimental results, removed plot of beta-function