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Study of high-momentum Higgs boson production in association with a vector boson in the $qqbb$ final state with the ATLAS detector

The ATLAS collaboration
Aad, Georges , Abbott, Braden Keim , Abeling, Kira , Abicht, Nils Julius , Abidi, Haider , Aboulhorma, Asmaa , Abramowicz, Halina , Abreu, Henso , Abulaiti, Yiming , Acharya, Bobby Samir
Phys.Rev.Lett. 132 (2024) 131802, 2024.
https://doi.org/10.17182/hepdata.149510

Abstract
This Letter presents the first study of Higgs boson production in association with a vector boson (V = W or Z) in the fully hadronic $qqbb$ final state using data recorded by the ATLAS detector at the LHC in proton-proton collisions at $\sqrt{s}=13$ TeV and corresponding to an integrated luminosity of 137 fb$^{-1}$. The vector bosons and Higgs bosons are each reconstructed as large-radius jets and tagged using jet substructure techniques. Dedicated tagging algorithms exploiting $b$-tagging properties are used to identify jets consistent with Higgs bosons decaying into $b\bar{b}$. Dominant backgrounds from multijet production are determined directly from the data, and a likelihood fit to the jet mass distribution of Higgs boson candidates is used to extract the number of signal events. The VH production cross section is measured inclusively and differentially in several ranges of Higgs boson transverse momentum: 250-450, 450-650, and greater than 650 GeV. The inclusive signal yield relative to the standard model expectation is observed to be $\mu = 1.4 ^{+1.0}_{-0.9}$ and the corresponding cross section is $3.1 \pm 1.3\, (stat.)\: ^{+1.8}_{-1.4}\, (syst.$) pb.

  • bin250_450_doubleBtagged postfit

    Figure 01 (left)

    10.17182/hepdata.149510.v1/t1

    Higgs candidate jet mass distributions in the signal region for $p_{T,J}^H$ in [250,450) GeV obtained after the inclusive fit with...

  • bin450_650_doubleBtagged postfit

    Figure 01 (middle)

    10.17182/hepdata.149510.v1/t2

    Higgs candidate jet mass distributions in the signal region for $p_{T,J}^H$ in [450,650) GeV obtained after the inclusive fit with...

  • bin650_doubleBtagged postfit

    Figure 01 (right)

    10.17182/hepdata.149510.v1/t3

    Higgs candidate jet mass distributions in the signal region for $p_{T,J}^H \geq 650$ GeV obtained after the inclusive fit with...

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