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arXiv · 2212.10489

Double Higgs production at NNLO interfaced to parton showers in GENEVA

Simone Alioli·Georgios Billis·Alessandro Broggio·Alessandro Gavardi·Stefan Kallweit·Matthew A. Lim·Giulia Marinelli·Riccardo Nagar·Davide Napoletano
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Abstract

In this work, we study the production of Higgs boson pairs at next-to-next-to-leading order in QCD matched to parton showers, using the \textsc{Geneva} framework and working in the heavy-top-limit approximation. This includes the resummation of large logarithms of the zero-jettiness $\mathcal{T}_0$ up to the next-to-next-to-next-to-leading-log accuracy. This process features an extremely large momentum transfer, which makes its study particularly relevant for matching schemes such as that employed in \textsc{Geneva}, where the resummation of a variable different from that used in the ordering of the parton shower is used. To further study this effect, we extend the original shower interface designed for \textsc{Pythia8} to include other parton showers, such as \textsc{Dire} and \textsc{Sherpa}.

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Simone Alioli, Georgios Billis, Alessandro Broggio, Alessandro Gavardi, Stefan Kallweit, Matthew A. Lim, Giulia Marinelli, Riccardo Nagar, Davide Napoletano. 2022-12-20. Double Higgs production at NNLO interfaced to parton showers in GENEVA. https://doi.org/10.1007/jhep06(2023)205

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