Hadronic decays of Higgs boson at NNLO matched with parton shower

Hu, Y.; Sun, ChuanLe; Shen, X. Y.; Gao, Jun

doi:10.1007/jhep08(2021)122

Cited by 12 publications

(9 citation statements)

References 105 publications

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“…[79], a numerical extension of the MiNLO procedure to higher jet multiplicities was presented and applied to Higgs production in association with up to two jets. Most NNLO+PS applications have been done for simple 2 → 1 LHC processes or 1 → 2 decays so far, such as Higgs-boson production [75,76,80,81], Drell-Yan (DY) production [74][75][76][82][83][84], Higgsstrahlung [85][86][87], which is still a 2 → 1 process with respect to QCD corrections, and the H → b b decay [88][89][90]. There are a few notable exceptions where NNLO+PS matching was achieved for more involved colour-singlet processes, namely W + W − [91], Zγ [92], γγ [93] and ZZ [94] production.…”

Section: Jhep11(2021)230mentioning

confidence: 99%

W+W− production at NNLO+PS with MINNLOPS

Lombardi

Wiesemann

Zanderighi

2021

J. High Energ. Phys.

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We consider W+W− production in hadronic collisions and present the computation of next-to-next-to-leading order accurate predictions consistently matched to parton showers (NNLO+PS) using the MiNNLOPS method. Spin correlations, interferences and off-shell effects are included by calculating the full process pp → e+νeμ−$$ \overline{\nu} $$ ν ¯ μ. This is the first NNLO+PS calculation for W+W− production that does not require an a-posteriori multi-differential reweighting. The evaluation time of the two-loop contribution has been reduced by more than one order of magnitude through a four-dimensional cubic spline interpolation. We find good agreement with the inclusive and fiducial cross sections measured by ATLAS and CMS. Both NNLO corrections and matching to parton showers are important for an accurate simulation of the W+W− signal, and their matching provides the best description of fully exclusive W+W− events to date.

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Section: Jhep11(2021)230mentioning

confidence: 99%

W+W− production at NNLO+PS with MINNLOPS

Lombardi

Wiesemann

Zanderighi

2021

J. High Energ. Phys.

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“…Fully-differential matching procedures are presently only available in NLO QCD, since the (fully differential) singularity-structure of QCD is not yet captured by any available parton shower. This has however not prevented several successful combinations of NNLO predictions and event generators [31,[34][35][36][37][38][39][40][41][42][43][44][45][46]. Phase-space slicing inspired unitarized merging methods offer a convenient stepping stone towards high accuracy.…”

Section: Jhep11(2021)041mentioning

confidence: 99%

Matching N3LO QCD calculations to parton showers

Prestel

2021

J. High Energ. Phys.

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The search for new interactions and particles in high-energy collider physics relies on precise background predictions. This has led to many advances in combining precise fixed-order cross-section calculations with detailed event generator simulations. In recent years, fixed-order qcd calculations of inclusive cross sections at n3lo precision have emerged, followed by an impressive progress at producing differential results. Once differential results become publicly available, it would be prudent to embed these into event generators to allow the community to leverage these advances. This note offers some concrete thoughts on me+ps matching at third order in qcd. As a method for testing these thoughts, a toy calculation of e+e− → u$$ \overline{u} $$ u ¯ at $$ \mathcal{O} $$ O ($$ {\alpha}_s^3 $$ α s 3 ) is constructed, and combined with an event generator through unitary matching. The toy implementation may serve also as blueprint for high-precision qcd predictions at future lepton colliders. As a byproduct of the n3lo matching formula, a new nnlo+ps formula for processes with “additional” jets is obtained.

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“…As far as Monte Carlo predictions are concerned, the simulation of H → b b decay events has been achieved at NNLO+PS in refs. [125][126][127].…”

Section: Introductionmentioning

confidence: 99%

Next-to-next-to-leading order event generation for $VH$ production with $H\to b\bar{b}$ decay

Zanoli,

Chiesa,

et al. 2021

Preprint

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We consider the Higgsstrahlung process in hadronic collisions and present the computation of next-to-next-to-leading order predictions matched to parton showers for both production and H → b b decay employing the MiNNLO PS method. We present predictions for ZH and W ± H production including spin correlations and off-shell effects by calculating the full processes ppin the narrow-width approximation for the Higgs boson. For the W ± H process, NNLO+PS accuracy in production and decay is achieved for the first time. Our calculations are validated against earlier simulations in the NNLOPS approach that includes NNLO corrections via multi-differential reweighting. The new MiNNLO PS generators for these processes, which evaluate NNLO corrections on-the-fly in the event generation, will supersede those earlier calculations. Our predictions are in good agreement with recent measurements of the Higgsstrahlung cross sections.

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Hadronic decays of Higgs boson at NNLO matched with parton shower

Cited by 12 publications

References 105 publications

W+W− production at NNLO+PS with MINNLOPS

W+W− production at NNLO+PS with MINNLOPS

Matching N3LO QCD calculations to parton showers

Next-to-next-to-leading order event generation for $VH$ production with $H\to b\bar{b}$ decay

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