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arXiv · 2009.13533

Resummed predictions for hadronic Higgs boson decays

Simone Alioli·Alessandro Broggio·Alessandro Gavardi·Stefan Kallweit·Matthew A. Lim·Riccardo Nagar·Davide Napoletano·Luca Rottoli
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Abstract

We present the NNLL$'$ resummed $2$-jettiness distribution for decays of the Standard Model Higgs boson to a $b\bar{b}$-quark pair and to gluons. The calculation exploits a factorisation formula derived using Soft-Collinear Effective Theory, in which large logarithms of the $2$-jettiness are resummed by renormalisation group evolution of the hard, soft and jet contributions to the differential decay rate. We match the resummed predictions to the fixed-order NNLO result using the GENEVA framework, extending the validity of the results to all values of the resolution variable and providing a fully exclusive NNLO event generator matched to the PYTHIA8 parton shower.

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Simone Alioli, Alessandro Broggio, Alessandro Gavardi, Stefan Kallweit, Matthew A. Lim, Riccardo Nagar, Davide Napoletano, Luca Rottoli. 2020-09-28. Resummed predictions for hadronic Higgs boson decays. https://doi.org/10.1007/jhep04(2021)254

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