1210.5059 (Gabriel Abelof et al.)

Antenna subtraction with massive fermions at NNLO: Double real
initial-final configurations    [PDF]

Gabriel Abelof, Aude Gehrmann-De Ridder, Oliver Dekkers

We derive the integrated forms of specific initial-final tree-level four-parton antenna functions involving a massless initial-state parton and a massive final-state fermion as hard radiators. These antennae are needed in the subtraction terms required to evaluate the double real corrections to $t\bar{t}$ hadronic production at the NNLO level stemming from the partonic processes $q\bar{q}\to t\bar{t}q'\bar{q}'$ and $gg\to t\bar{t}q\bar{q}$.

View original: http://arxiv.org/abs/1210.5059