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Top-quark pair hadroproduction at next-to-next-to-leading order in QCD · Around

2019

Top-quark pair hadroproduction at next-to-next-to-leading order in QCD

Catani, Stefano, Devoto, Simone, Grazzini, Massimiliano et al.

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We report on a new calculation of the next-to-next-to-leading order (NNLO) QCD radiative corrections to the inclusive production of top-quark pairs at hadron colliders.

The calculation is performed by using the $q_T$ subtraction formalism to handle and cancel infrared singular contributions at intermediate stages of the computation.
We present numerical results for the total cross section in $pp$ collisions at $\sqrt{s}=8$ TeV and $13$ TeV, and we compare them with those obtained by using the publicly available numerical program Top++.
Our computation represents the first complete application of the $q_T$ subtraction formalism to the hadroproduction of a colourful high-mass system at NNLO.

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