Double Higgs boson production at NLO: combining the exact numerical result and high-energy expansion

Davies, Joshua; Heinrich, G.; Jones, Stephen; Kerner, M.; Mishima, Go; Steinhauser, Matthias; Wellmann, David

doi:10.1007/jhep11(2019)024

Cited by 48 publications

(66 citation statements)

References 91 publications

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“…Further improvements of the fixed-order perturbative calculations without any approximation are quite challenging. The full next-to-leading order (NLO) QCD calculations involving complicated two-loop Feynman integrals were carried out only recently [31][32][33][34] thanks to the new advances of the numerical approaches [35][36][37]. The NLO results were complemented with soft-gluon resummation [38] or parton-shower (PS) effects [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

The gluon-fusion production of Higgs boson pair: N3LO QCD corrections and top-quark mass effects

Chen

Shao

et al. 2020

J. High Energ. Phys.

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The Higgs boson pair production via gluon fusion at high-energy hadron colliders, such as the LHC, is vital in deciphering the Higgs potential and in pinning down the electroweak symmetry breaking mechanism. We carry out the next-to-next-to-next-toleading order (N 3 LO) QCD calculations in the infinite top-quark mass limit and present predictions for both the inclusive and differential cross sections. Such corrections are indispensable in stabilising the perturbative expansion of the cross section in the strong coupling α s . At the inclusive level, the scale uncertainties are reduced by a factor of four compared with the next-to-next-to-leading order (NNLO) results. Given that the inclusion of the top-quark mass effects is essential for the phenomenological applications, we use several schemes to incorporate the N 3 LO results in the infinite top-quark mass limit and the nextto-leading order (NLO) results with full top-quark mass dependence, and present theoretical predictions for the (differential) cross sections in the proton-proton collisions at the centreof-mass energies √ s = 13, 14, 27 and 100 TeV. Our results provide one of the most precise theoretical inputs for the analyses of the Higgs boson pair events.

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Section: Introductionmentioning

confidence: 99%

The gluon-fusion production of Higgs boson pair: N3LO QCD corrections and top-quark mass effects

Chen

Shao

et al. 2020

J. High Energ. Phys.

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“…[51]; the latter have been combined with the full NLO results in the regions where they are more appropriate in Ref. [52]. The effects of operators within an Effective Field Theory (EFT) description of Higgs boson pair production have been studied at LO QCD in Refs.…”

Section: Introductionmentioning

confidence: 99%

Exploring anomalous couplings in Higgs boson pair production through shape analysis

Capozi

Heinrich

2020

J. High Energ. Phys.

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We classify shapes of Higgs boson pair invariant mass distributions m hh , calculated at NLO with full top quark mass dependence, and visualise how distinct classes of shapes relate to the underlying coupling parameter space. Our study is based on a five-dimensional parameter space relevant for Higgs boson pair production in a non-linear Effective Field Theory framework. We use two approaches: an analysis based on predefined shape types and a classification into shape clusters based on unsupervised learning. We find that our method based on unsupervised learning is able to capture shape features very well and therefore allows a more detailed study of the impact of anomalous couplings on the m hh shape compared to more conventional approaches to a shape analysis.

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“…Single top associated production is also a possible production mode but it is neglected in this study. The cross-section calculations [64][65][66][67][68][69][70][71][72][73] for these main production mechanisms, reported also in Refs. [11,48,74], are given in Table 1.…”

Section: The Hh Production Processesmentioning

confidence: 81%

Measuring the Higgs self-coupling via Higgs-pair production at a 100 TeV p–p collider

2020

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Higgs pair production provides a unique handle for measuring the strength of the Higgs self interaction and constraining the shape of the Higgs potential. Among the proposed future facilities, a circular 100 TeV proton–proton collider would provide the most precise measurement of this crucial quantity. In this work, we perform a detailed analysis of the most promising decay channels and derive the expected sensitivity of their combination, assuming an integrated luminosity of 30 $$\hbox {ab}^{-1}$$ ab - 1 . Depending on the assumed detector performance and systematic uncertainties, we observe that the Higgs self-coupling will be measured with a precision in the range 3.4–7.8% at 68% confidence level.

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Double Higgs boson production at NLO: combining the exact numerical result and high-energy expansion

Cited by 48 publications

References 91 publications

The gluon-fusion production of Higgs boson pair: N3LO QCD corrections and top-quark mass effects

The gluon-fusion production of Higgs boson pair: N3LO QCD corrections and top-quark mass effects

Exploring anomalous couplings in Higgs boson pair production through shape analysis

Measuring the Higgs self-coupling via Higgs-pair production at a 100 TeV p–p collider

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