H γγ to all orders in αs in the large-β0 limit of QCD
Abstract
In this note, we present the result for the QCD corrections to the decay of the Higgs boson into two photons in the large-β0 limit of QCD, providing the first two terms in the heavy-top expansion. From our results, one can easily read off the exact leading-nf QCD contributions in analytic form to all orders in the strong coupling, αs, where nf is the number of massless quarks, and identify the leading renormalon singularities. We give explicit results for the leading-nf coefficients at 6 and 7 loops and use the large-β0 result to speculate about the size of yet unknown (but small) higher-order contributions to the QCD series.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.