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arXiv · 1901.04005

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

Stefano Catani·Simone Devoto·Massimiliano Grazzini·Stefan Kallweit·Javier Mazzitelli·Hayk Sargsyan
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Abstract

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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Stefano Catani, Simone Devoto, Massimiliano Grazzini, Stefan Kallweit, Javier Mazzitelli, Hayk Sargsyan. 2019-01-13. Top-quark pair hadroproduction at next-to-next-to-leading order in QCD. https://doi.org/10.1103/physrevd.99.051501

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