Abstract
We present results for the Higgsstrahlung process within the GENEVA Monte Carlo framework. We combine the fully differential NNLO calculation with the higher-order resummation in the 0-jettiness resolution variable (beam-thrust). The resulting parton-level events are further showered and hadronised by Pythia8. The beam-thrust resummation is carried out to NNLL$'$ accuracy, which consistently incorporates all singular virtual and real NNLO corrections. It thus provides a natural perturbative connection between the NNLO calculation and the parton shower regime, including a systematic assessment of perturbative uncertainties. In this way, observables which are inclusive over the additional radiation are correct to NNLO, while the description of 0-jet-like resummation variables is improved beyond the parton shower approximation. We provide predictions for the 13 TeV LHC.
Highlights
The study of the properties of the Higgs boson forms an important part of the experimental programme at the LHC
Though first observed in final states with two photons, the dominant decay mode of the Higgs boson is to a pair of bottom quarks which has only recently been measured in associated production with a vector boson [1,2]
We present results for the Higgsstrahlung processes pp → ZH → lþl−H and pp → WÆH → lÆνlH at next-to-next-to-leading order (NNLO) matched to the PYTHIA8 parton shower according to the GENEVA method [23,28,29,30], assuming an on-shell Higgs boson
Summary
Though first observed in final states with two photons, the dominant decay mode of the Higgs boson is to a pair of bottom quarks which has only recently been measured in associated production with a vector boson [1,2] This class of Higgsstrahlung processes is, an interesting subject of study. In the case of ZH production, the gluon-initiated channel in which the Higgs boson couples to a top-quark loop becomes accessible beginning at Oðα2s Þ This provides a finite contribution to the next-to-next-to-leading order (NNLO) cross section and is sensitive to the presence of new physics. We present results for the Higgsstrahlung processes pp → ZH → lþl−H and pp → WÆH → lÆνlH at NNLO matched to the PYTHIA8 parton shower according to the GENEVA method [23,28,29,30], assuming an on-shell Higgs boson.
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