Higgs Boson Production in Association with a Top-Antitop Quark Pair in Next-to-Next-to-Leading Order QCD
Oct 14, 2022
8 pages
Published in:
- Phys.Rev.Lett. 130 (2023) 11, 111902
- Published: Mar 16, 2023
e-Print:
- 2210.07846 [hep-ph]
DOI:
- 10.1103/PhysRevLett.130.111902 (publication)
Report number:
- TIF-UNIMI-2022-15,
- ZU-TH 46/22,
- MPP-2022-128,
- PSI-PR-22-30
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Citations per year
Abstract: (APS)
The associated production of a Higgs boson with a top-antitop quark pair is a crucial process at the LHC since it allows for a direct measurement of the top-quark Yukawa coupling. We present the computation of the radiative corrections to this process at the next-to-next-to-leading order (NNLO) in QCD perturbation theory. This is the very first computation for a process with massive colored particles at this perturbative order. We develop a soft Higgs boson approximation for loop amplitudes, which enables us to reliably quantify the impact of the yet unknown two-loop contribution. At the center-of-mass energy , the NNLO corrections increase the next-to-leading order result for the total cross section by about 4% and lead to a significant reduction of perturbative uncertainties.Note:
- 8 pages, 2 tables, 1 figure. Version published on PRL
- top: pair production
- Higgs particle: associated production
- quantum chromodynamics: perturbation theory
- higher-order: 2
- coupling: Yukawa
- CERN LHC Coll
- total cross section
- radiative correction
References(0)
Figures(1)
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