A search for Higgs boson (H) production at high transverse momentum (pT) in the WW decay channel is presented. The analysis uses proton-proton collisions at s=13 TeV recorded by the CMS experiment in 2016–2018, corresponding to an integrated luminosity of 138 fb−1. The visible decay products of the Higgs boson are reconstructed as a single large-radius jet with one isolated lepton or none (1ℓ and 0ℓ, respectively; ℓ = e, μ). The H-candidate jets are identified using an advanced transformer-based algorithm and are calibrated with the Lund jet plane reweighting technique. The 1ℓ channel is further split into gluon fusion, vector boson fusion, and associated production with hadronically decaying vector boson categories, while the 0ℓ channel considers all production processes inclusively. The measured cross section times the H → WW branching fraction relative to the standard model expectation is μ=−0.19−0.46+0.48, indicating no evidence of a signal above the background. This measurement represents the first dedicated study of highly Lorentz-boosted H → WW decays, complementing earlier searches for high-pT Higgs boson in other decay channels.

Search for Higgs boson production at high transverse momentum in the WW decay channel in proton-proton collisions at √s = 13 TeV

Alexe, C.;Bruschini, D.;Ligabue, F.;
2026

Abstract

A search for Higgs boson (H) production at high transverse momentum (pT) in the WW decay channel is presented. The analysis uses proton-proton collisions at s=13 TeV recorded by the CMS experiment in 2016–2018, corresponding to an integrated luminosity of 138 fb−1. The visible decay products of the Higgs boson are reconstructed as a single large-radius jet with one isolated lepton or none (1ℓ and 0ℓ, respectively; ℓ = e, μ). The H-candidate jets are identified using an advanced transformer-based algorithm and are calibrated with the Lund jet plane reweighting technique. The 1ℓ channel is further split into gluon fusion, vector boson fusion, and associated production with hadronically decaying vector boson categories, while the 0ℓ channel considers all production processes inclusively. The measured cross section times the H → WW branching fraction relative to the standard model expectation is μ=−0.19−0.46+0.48, indicating no evidence of a signal above the background. This measurement represents the first dedicated study of highly Lorentz-boosted H → WW decays, complementing earlier searches for high-pT Higgs boson in other decay channels.
Search for Higgs boson production at high transverse momentum in the WW decay channel in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV
2026
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
Hadron-Hadron Scattering; Higgs Physics; Vector Boson Production
   International Training Network for Statistics in High Energy Physics and Society
   INSIGHTS
   European Commission
   Horizon 2020 Framework Programme - European Training Networks
   765710

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   HIGCC
   European Commission
   Horizon 2020 Framework Programme - European Research Council - Consolidator Grant
   724704

   Majorana neutrino discovery strategy with CMS
   MajorNet
   European Commission
   Horizon 2020 Framework Programme - European Research Council - Starting Grant
   758316

   The strong interaction at the frontier of knowledge: fundamental research and applications
   STRONG-2020
   European Commission
   Horizon 2020 Framework Programme - Research and Innovation action
   824093

   Fundamental properties and time-scan of QCD matter at high densities and temperature exposed by jet substructure in heavy ion collisions with CMS experiment at the LHC
   QCDHighDensityCMS
   European Commission
   Horizon 2020 Framework Programme - European Research Council - Consolidator Grant
   101002207

   Advanced Multi-Variate Analysis for New Physics Searches at the LHC
   AMVA4NewPhysics
   European Commission
   Horizon 2020 Framework Programme - European Training Networks
   675440

   Enswarm
   UK Research and Innovation
   Innovate UK
   752730

   INnovative TRiggEr techniques for beyond the standard model PhysIcs Discovery at the LHC
   INTREPID
   European Commission
   Horizon Europe Framework Programme - European Research Council - HORIZON ERC Grants
   101115353

   Power to the LHC data: an ASYmptotically MOdel-independent measurement of the W boson mass.
   ASYMOW
   European Commission
   H2020
   101001205

   Future Artificial Intelligence Research
   FAIR
   MUR
   PNRR

   PRobing Interactions of Multibosons Leveraging Accuracy
   PRIMULA
   MUR
   PRIN2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/170570
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