Approximate N3LO Higgs-boson production cross section using physical-kernel constraints
Approximate N3LO Higgs-boson production cross section using physical-kernel constraints
The single-logarithmic enhancement of the physical kernel for Higgs production by gluon-gluon fusion in the heavy top-quark limit is employed to derive the leading so far unknown contributions, ln^{5,4,3}(1-z), to the N^3LO coefficient function in the threshold expansion. Also using knowledge from Higgs-exchange DIS to estimate the remaining terms not …