Two-parton contribution to the heavy-quark AFB at NNLO QCD in e+e− collisions

At the next generation of linear colliders, forward-backward asymmetries will be involved again in the precise determination of the neutral current couplings of heavy quarks in inclusive heavy-quark production. The theoretical understanding of these observables at the level of NNLO radiative corrections is required. We review a recent calculation of the two-parton contribution to the heavy-quark AFB at NNLO QCD in e+e− collisions. The results are valid for arbitrary values of the momentum transfer and non-vanishing heavy-quark mass mQ.