Next-to-Leading Order virtual correction to Higgs-induced DIS

Abstract

We calculate the Next-to-Leading Order (NLO) virtual correction to the Higgs-induced DIS coefficient function in the infinite top-mass limit. Since we want to use this result in the framework of kt-factorization to resum small-x logarithms up to Next-to-Leading-Logarithm (NLL), we work in light-cone gauge and we keep the incoming gluon off-shell. This choice raises many challenging points like the presence of spurious singularities and a different definition for the UV-counterterms. This calculation is a necessary ingredient for the coefficient function that will be used to resum up to NLL small-x logarithms for this process.

Comments: 6 pages, 2 figures. Presented at "Diffraction and Low-$x$ 2022'', Corigliano Calabro (Italy), September 24-30, 2022