Higgs decay to two photons at one-loop in the SMEFT

Abstract

We present the calculation of the $\rm CP$ conserving contributions to $Γ(h \rightarrow γγ)$, from dimension six operators at one-loop order, in the linear Standard Model Effective Field Theory. We discuss the impact of these corrections on interpreting current and future experimental bounds on this decay.

6pp, 1 fig. V4: Typos corrected and comment added