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


Catani, Stefano; Devoto, Simone; Grazzini, Massimiliano; Kallweit, Stefan; Mazzitelli, Javier; Sargsyan, Hayk (2019). Top-quark pair hadroproduction at next-to-next-to-leading order in QCD. Physical review. D, 99(5):051501.

Abstract

We report on a new calculation of the next-to-next-to-leading order QCD radiative corrections to the inclusive production of top-quark pairs at hadron colliders. The calculation is performed by using the qT 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 √s=8 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 qT subtraction formalism to the hadroproduction of a colorful high-mass system at next-to-next-to-leading order.

Abstract

We report on a new calculation of the next-to-next-to-leading order QCD radiative corrections to the inclusive production of top-quark pairs at hadron colliders. The calculation is performed by using the qT 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 √s=8 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 qT subtraction formalism to the hadroproduction of a colorful high-mass system at next-to-next-to-leading order.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Uncontrolled Keywords:Physics and Astronomy (miscellaneous)
Language:English
Date:28 March 2019
Deposited On:02 May 2019 12:53
Last Modified:02 May 2019 19:49
Publisher:American Physical Society
ISSN:2470-0010
OA Status:Green
Publisher DOI:https://doi.org/10.1103/physrevd.99.051501
Project Information:
  • : FunderH2020
  • : Grant ID714788
  • : Project TitleREINVENT - REsummation-Improved moNtecarlo eVEnt geNeraTor

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