NLO+NLL′ accurate predictions for three-jet event shapes in hadronic Higgs decays
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Date
2024-07Type
- Journal Article
ETH Bibliography
yes
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Abstract
We present resummed predictions at next-to-leading logarithmic accuracy matched to the exact next-to-leading order results for a set of classical event-shape observables in hadronic Higgs decays, i.e., for the channels H → gg and H → bb¯. We furthermore consider soft-drop grooming of the hadronic final states and derive corresponding NLO+NLL′ predictions for the groomed thrust observable. Differences in the QCD radiation pattern of gluon- and quark-initiated final states are imprinted in the event-shape distributions, offering separation power for the two decay channels. In particular, we show that ungroomed event shapes in H → gg decays develop a considerably harder spectrum than in H → bb¯ decays. We highlight that soft-drop grooming can substantially alter this behaviour, unless rather inclusive grooming parameters are chosen. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000685501Publication status
publishedExternal links
Journal / series
Journal of High Energy PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Higher-Order Perturbative Calculations; Resummation; Higgs Production; Higgs PropertiesFunding
197130 - Computing flavour-sensitive observables at high energy colliders (SNF)
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ETH Bibliography
yes
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