Towards gg → HH at next-to-next-to-leading order: Light-fermionic three-loop corrections

Davies, Joshua; Schönwald, Kay; Steinhauser, Matthias

doi:10.1016/j.physletb.2023.138146

Cited by 5 publications

(1 citation statement)

References 62 publications

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“…The NLO QCD corrections in the SM are available [1][2][3][4][5][6], corrections beyond NLO, using large-m t expansions or the high energy limit, also have been calculated [7][8][9][10][11][12][13][14]. Partial three-loop results [15] as well as EW corrections also have emerged recently [16][17][18]. The results of [1] have been implemented in into the Powheg-Box-V2 [19][20][21] event generator, first for the SM only [22], then also for κ λ variations [23] as well as for the leading operators contributing to this process in HEFT [24,25] and SMEFT [26].…”

Section: Motivationmentioning

confidence: 99%

Two Higgs bosons, two loops, x+2 operators

Heinrich,

Lang,

Scyboz

2023

Proceedings of 16th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology — P

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Section: Motivationmentioning

confidence: 99%

Two Higgs bosons, two loops, x+2 operators

Heinrich,

Lang,

Scyboz

2023

Proceedings of 16th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology — P

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Higgs boson pair production and decay at NLO in QCD: the $$ b\overline{b}\gamma \gamma $$ final state

Li,

Si,

Wang

et al. 2024

J. High Energ. Phys.

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The Higgs boson pair production at the LHC provides a probe to the Higgs boson self-coupling. The higher-order QCD corrections in this process are sizable and must be taken into account in comparison with data. Due to the small cross section, it is necessary to consider at least one of the Higgs bosons decaying to bottom quarks. The QCD corrections to the decay processes would also be important in such cases. We present a full calculation of the total and differential cross sections for the $$ b\overline{b}\gamma \gamma $$ b b ¯ γγ final state with next-to-leading order (NLO) QCD corrections. After applying typical kinematic cuts in the final state, we find that QCD NLO corrections in the decay decrease the LO result by 19% and reduce the scale uncertainties by a factor of two. The QCD corrections to the invariant mass mjjγγ distribution, the transverse momentum spectra of the leading bottom quark jet and photon are significant and can not be approximated by a constant factor.

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Double Higgs production at the HL-LHC: probing a loop-enhanced model with kinematical distributions

Da Rold,

Epele,

Medina

et al. 2024

J. High Energ. Phys.

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We study di-Higgs production via gluon fusion at the high luminosity LHC in the presence of new physics, focusing on the $$b\overline{b }\gamma \gamma $$ final states. Taking a minimal set of three scalar leptoquarks (LQs) with cubic and quartic interactions with the Higgs and choosing four benchmark points with a light LQ, we perform a detailed analysis of differential distributions of the di-Higgs production cross section, studying the imprints of the new physics states running in the loops. Simulating the signal and main backgrounds, we study the influence of the new physics in differential distributions such as the invariant mass of the subsystems of final particles, the transverse momentum, and angular variables, finding in particular a resonance peak associated with the light LQ. It turns out that the angular separation of the photons, which is correlated with the resonance LQ peak, is a very sensitive observable that helps in discriminating the new physics signal from the Standard Model background. We find that for two of our benchmarks discovery could be reached with 3 ab−1, whereas exclusion limits at 95% C.L. could be claimed with 0.60–0.75 ab−1. For the other two benchmarks that have heavier LQ masses significances of order 2σ are possible for 3 ab−1. A similar analysis could be applied to other loop-enhanced models.

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Towards gg → HH at next-to-next-to-leading order: Light-fermionic three-loop corrections

Cited by 5 publications

References 62 publications

Two Higgs bosons, two loops, x+2 operators

Two Higgs bosons, two loops, x+2 operators

Higgs boson pair production and decay at NLO in QCD: the $$ b\overline{b}\gamma \gamma $$ final state

Double Higgs production at the HL-LHC: probing a loop-enhanced model with kinematical distributions

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Towards gg → HH at next-to-next-to-leading order: Light-fermionic three-loop corrections

Cited by 5 publications

References 62 publications

Two Higgs bosons, two loops, x+2 operators

Two Higgs bosons, two loops, x+2 operators

Higgs boson pair production and decay at NLO in QCD: the $$ b\overline{b}\gamma \gamma $$ final state

Double Higgs production at the HL-LHC: probing a loop-enhanced model with kinematical distributions

Contact Info

Product

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Towards gg → HH at next-to-next-to-leading order: Light-fermionic three-loop corrections