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arxiv: 2009.13533 · v2 · pith:RXYRCLKJnew · submitted 2020-09-28 · ✦ hep-ph · hep-ex

Resummed predictions for hadronic Higgs boson decays

classification ✦ hep-ph hep-ex
keywords resummedbosondecayshiggsjettinessnnlopredictionscalculation
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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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