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Top quark pair production at NNLO in the quark-antiquark channel
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abstract
We present the derivation of the NNLO two-parton final state contributions to top pair production in the quark-antiquark channel proportionnal to the leading colour factor $N_c^2$. Together with the three and four-parton NNLO contributions presented in a previous publication, this enables us to complete the phenomenologically most important NNLO corrections to top pair hadro-production in this channel. We derive this two-parton contribution using the massive extension of the NNLO antenna subtraction formalism and implement those corrections in a parton-level event generator providing full kinematical information on all final state particles. In addition, we also derive the heavy quark contributions proportional to $N_h$. Combining the new leading-colour and heavy quark contributions together with the light quark contributions derived previously, we present NNLO differential distributions for LHC and Tevatron. We also compute the differential top quark forward-backward asymmetry at Tevatron and find that our results are in good agreement with the measurements by the D0 collaboration.
Forward citations
Cited by 1 Pith paper
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Antenna subtraction at NNLO for heavy quark pair production at hadron colliders: the non-diagonal channels
NNLO antenna subtraction is completed for the qq, qq' and qg channels of heavy-quark pair production in full colour, with new massive soft factors and integrated antennae validated against Top++.
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