Higgs-boson production in top-quark fragmentation

Brancaccio, Colomba; Czakon, Michał; Generet, Terry; Krämer, M.

doi:10.1007/jhep08(2021)145

Cited by 3 publications

(1 citation statement)

References 60 publications

(75 reference statements)

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“…Fragmentation and splitting functions for the final-state transitions t → H and g → H, known previously in the m H = m T limit [535] and at LO [536], were presented at a y t s 2 ( )  in [537]. These results are useful for the resummation of logarithms of the form p m ln T ( ), and can be used to derive massive predictions in the high-p T regime from their massless counterparts.…”

Section: ( ) mentioning

confidence: 96%

Les Houches 2021—physics at TeV colliders: report on the standard model precision wishlist

Huss

Huston

Jones

et al. 2023

J. Phys. G: Nucl. Part. Phys.

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Les Houches activities in 2021 were truncated due to the lack of an in-person component. However, given the rapid progress in the field and the restart of the LHC, we wanted to continue the bi-yearly tradition of updating the standard model precision wishlist. In this work we therefore review recent progress (since Les Houches 2019) in fixed-order computations for LHC applications. In addition, necessary ingredients for such calculations such as parton distribution functions, amplitudes, and subtraction methods are discussed. Finally, we indicate processes and missing higher-order corrections that are required to reach the theoretical accuracy that matches the anticipated experimental precision.

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Section: ( ) mentioning

confidence: 96%

Les Houches 2021—physics at TeV colliders: report on the standard model precision wishlist

Huss

Huston

Jones

et al. 2023

J. Phys. G: Nucl. Part. Phys.

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NNLO B-fragmentation fits and their application to $$ t\overline{t} $$ production and decay at the LHC

Czakon

Generet

Mitov

et al. 2023

J. High Energ. Phys.

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In this work we derive three sets of non-perturbative fragmentation functions, with uncertainties, for B-hadrons, J/ψ’s and muons resulting from semileptonic B decays. All three sets are with next-to-next-to leading order accuracy and include next-to-next-to leading logarithmic soft gluon resummation. The novel feature of these new sets is that they are fully consistent with our formalism for next-to-next-to leading order (NNLO) calculations for final states with identified B, J/ψ or a μ. We employ the fragmentation functions derived in this work to make state of the art predictions for such final states in $$ t\overline{t} $$ t t ¯ events at the LHC. A special emphasis is placed on observables sensitive to the top quark mass. The present work opens the door for many LHC applications, like, open B production or B production in association with bosons.

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Two-loop amplitudes for $$ t\overline{t}H $$ production: the quark-initiated Nf-part

Agarwal,

Heinrich,

Jones

et al. 2024

J. High Energ. Phys.

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We present numerical results for the two-loop virtual amplitude entering the NNLO corrections to Higgs boson production in association with a top quark pair at the LHC, focusing, as a proof of concept of our method, on the part of the quark-initiated channel containing loops of massless or massive quarks. Results for the UV renormalised and IR subtracted two-loop amplitude for each colour structure are given at selected phase-space points and visualised in terms of surfaces as a function of two-dimensional slices of the full phase space.

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Higgs-boson production in top-quark fragmentation

Cited by 3 publications

References 60 publications

Les Houches 2021—physics at TeV colliders: report on the standard model precision wishlist

Les Houches 2021—physics at TeV colliders: report on the standard model precision wishlist

NNLO B-fragmentation fits and their application to $$ t\overline{t} $$ production and decay at the LHC

Two-loop amplitudes for $$ t\overline{t}H $$ production: the quark-initiated Nf-part

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