Search for Highly Energetic Double Higgs Boson Production in the Two Bottom Quark and Two Vector Boson All-Hadronic Final State

The CMS Collaboration. CMS-PAS-HIG-23-012, CERN (2024).

I contributed event-selection optimization to this analysis.

Boosted HH to bbVV analysis

Abstract

A search for standard model (SM) nonresonant Higgs boson pair ($\mathrm{HH}$) production is performed in the two bottom quark ($\mathrm{b\bar{b}}$) and all-hadronic two vector boson ($\mathrm{VV \to 4q}$) final states. The search is carried out in proton-proton collisions at 13 TeV with a dataset corresponding to a total luminosity of $138~\mathrm{fb}^{-1}$. The analysis focuses on highly Lorentz-boosted $\mathrm{HH}$ candidates, where each Higgs boson’s daughter quarks are all merged inside a single large radius jet. A new global particle transformer (GloParT) classifier is used to effectively perform boosted $\mathrm{VV \to 4q}$ jet identification. The multiplicative modifier of the SM quartic coupling between two Higgs bosons and two vector bosons is observed (expected) to be constrained at 95% confidence level to $\kappa_{2\mathrm{V}} \in [-0.04, 2.05]$ ($[0.05, 1.98]$).

Cite

@techreport{CMS-PAS-HIG-23-012,
      collaboration = "CMS",
      title         = "{Search for highly energetic double Higgs boson production
                       in the two bottom quark and two vector boson all-hadronic
                       final state}",
      institution   = "CERN",
      reportNumber  = "CMS-PAS-HIG-23-012",
      address       = "Geneva",
      year          = "2024",
      url           = "https://cds.cern.ch/record/2904879",
}