Gluon fusion production at NLO: merging the transverse momentum and the high-energy expansions
TLDR
In this paper , the virtual corrections to gg → HH and gg→ ZH are analytically evaluated combining an expansion in the small transverse momentum of the final particles with an expansion valid at high energies.Abstract:
A bstract The virtual corrections to gg → HH and gg → ZH are analytically evaluated combining an expansion in the small transverse momentum of the final particles with an expansion valid at high energies. The two expansion methods describe complementary regions of the phase space and we merge their results, extending the range of validity of both expansions using Padé approximants. We show that this approach can reproduce the available numerical results retaining the exact top quark mass dependence with an accuracy below the 1% level. Our results allow a fast and flexible evaluation of the virtual corrections of the considered processes. Furthermore, they are available in different renormalisation schemes of the top quark mass. read more
Citations
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ZH production in gluon fusion at NLO in QCD
TL;DR: In this article , the authors present fully differential next-to-leading order results for Higgs production in association with a Z boson in gluon fusion, using sector decomposition, including full top-quark mass effects.
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On the NLO QCD corrections to gluon-initiated ZH production
TL;DR: In this paper , the authors compute the QCD corrections at next-to-leading order for the process $gg \rightarrow ZH, including both the virtual two-loop terms and real-emission contributions.
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Les Houches 2021 - Physics at TeV Colliders: Report on the standard model precision wishlist
TL;DR: In this article , the authors reviewed recent progress in fixed-order computations for LHC applications and discussed necessary ingredients for such calculations such as parton distribution functions, amplitudes, and subtraction methods.
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N3LO+N3LL QCD improved Higgs pair cross sections
TL;DR: In this paper , the soft-gluon threshold resummation for the Higgs boson pair production in the dominant production mode was reported, up to the next-to-next-tonext-next to leading logarithmic (N 3 LL) accuracy, while the conventional renormalization and factorisation scale uncertainties are reduced by a factor of two, reaching to the subpercent level.
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Higgs boson contribution to the leading two-loop Yukawa corrections to gg → HH
TL;DR: In this article , the authors analytically compute two-loop Yukawa corrections to Higgs boson pair production in the high energy limit, generated by an exchange of a Higgs particle between the virtual top quark lines.
References
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