Precise predictions for boosted Higgs production

Article
Report number	arXiv:2005.07762 ; CERN-TH-2020-074
Title	Precise predictions for boosted Higgs production
Author(s)	Becker, Kathrin (Freiburg U.) ; Caola, Fabrizio (Oxford U., Theor. Phys.) ; Massironi, Andrea (CERN ; INFN, Milan Bicocca) ; Mistlberger, Bernhard (MIT) ; Monni, Pier Francesco (CERN) ; Chen, Xuan (Zurich U.) ; Frixione, Stefano (INFN, Genoa) ; Gehrmann, Thomas (Zurich U.) ; Glover, Nigel (Durham U., IPPP) ; Hamilton, Keith (University Coll. London) ; Huss, Alexander (CERN ; Durham U., IPPP) ; Jones, Stephen (CERN) ; Karlberg, Alexander (Oxford U., Theor. Phys.) ; Kerner, Matthias (Zurich U.) ; Kudashkin, Kirill (KIT, Karlsruhe, TTP) ; Lindert, Jonas M. (Sussex U.) ; Luisoni, Gionata (Munich, Max Planck Inst.) ; Mangano, Michelangelo (CERN) ; Pozzorini, Stefano (Zurich U.) ; Re, Emanuele (Annecy, LAPTH) ; Salam, Gavin P. (Oxford U., Theor. Phys. ; Oxford U.) ; Vryonidou, Eleni (CERN) ; Wever, Christopher (Munich, Tech. U.)
Publication	2024-01-04
Imprint	2020-05-15
Number of pages	17
Note	Journal version
In:	SciPost Phys. Core 7 (2024) 001
DOI	10.21468/SciPostPhysCore.7.1.001
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	Inclusive Higgs boson production at large transverse momentum is induced by different production channels. We focus on the leading production through gluon fusion, and perform a consistent combination of the state of the art calculations obtained in the infinite-top-mass effective theory at next-to-next-to-leading order (NNLO) and in the full Standard Model (SM) at next-to-leading order (NLO). We thus present approximate QCD predictions for this process at NNLO, and a study of the corresponding perturbative uncertainties. This calculation is then compared with those obtained with commonly used event generators, and we observe that the description of the considered kinematic regime provided by these tools is in good agreement with state of the art calculations. Finally, we present accurate predictions for other production channels such as vector boson fusion, and associated production with a gauge boson, and with a $t\bar{t}$ pair. We find that, at large transverse momentum, the contribution of other production modes is substantial, and therefore must be included for a precise theory prediction of this observable.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2024 The Authors (License: CC-BY-4.0)

$Transverse momentum distribution of the Higgs boson at the LHC with $\sqrt{s}=13$~TeV computed in refs.~\cite{Chen:2016zka,Jones:2018hbb}. The upper panel shows absolute predictions at LO (${\cal O}(\alpha_s^3)$) and NLO (${\cal O}(\alpha_s^4)$) in the full SM and in the infinite $\mtop$ approximation (EFT), as well as the NNLO (${\cal O}(\alpha_s^5)$) in the EFT. The lower panels show the ratio of the EFT and full SM predictions to their respective LO calculations. The bands indicate theoretical errors obtained with a 7-point scale variation.$ $Transverse momentum distribution of the Higgs boson at the LHC with $\sqrt{s}=13$~TeV computed in refs.~\cite{Chen:2016zka,Jones:2018hbb,Chen:2021azt}. The upper panel shows absolute predictions at LO (${\cal O}(\alpha_s^3)$) and NLO (${\cal O}(\alpha_s^4)$) in the full SM and in the infinite $\mtop$ approximation (EFT), as well as the NNLO (${\cal O}(\alpha_s^5)$) in the EFT. The lower panels show the ratio of the EFT and full SM predictions to their respective LO calculations. The bands indicate theoretical errors obtained with a 7-point scale variation, i.e. we perform a variation of $\mu_R$ and $\mu_F$ by a factor of two around their central value by keeping $ 1/2\leq \mu_R/\mu_F \leq 2$.$ $Cumulative cross section as a function of the $p_\perp$ cut at NNLO in the heavy-top EFT, as well as rescaled by the LO (NLO) full-SM spectrum labelled by EFT-improved$(0)$ (EFT-improved$(1)$). See the text for description. The ratio of the EFT-improved$(1)$ and EFT-improved$(0)$ predictions is shown in Fig.~\ref{fig:relativefinal}$ Show more plots

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Record creato 2020-05-20, modificato l'ultima volta il 2024-06-16

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