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

Abstract

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 A_FB at NNLO QCD in e+e- collisions. The results are valid for arbitrary values of the momentum transfer and non-vanishing heavy-quark mass m_Q.

Comments: 5 pages, to appear in the proceedings of the conference "Loops and Legs", Eisenach, 2006