Measurement of $VH$, $H\to b\bar{b}$ production as a function of the vector-boson transverse momentum in 13 TeV $pp$ collisions with the ATLAS detector

Abstract

Cross-sections of associated production of a Higgs boson decaying into bottom-quark pairs and an electroweak gauge boson, $W$ or $Z$, decaying into leptons are measured as a function of the gauge boson transverse momentum. The measurements are performed in kinematic fiducial volumes defined in the `simplified template cross-section' framework. The results are obtained using 79.8 fb${}^{-1}$ of proton-proton collisions recorded by the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 13 TeV. All measurements are found to be in agreement with the Standard Model predictions, and limits are set on the parameters of an effective Lagrangian sensitive to modifications of the Higgs boson couplings to the electroweak gauge bosons.

35 pages in total, author list starting page 19, 4 figures, 4 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-50

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• ATLAS flavour-tagging algorithms for the LHC Run 2 $pp$ collision dataset
• Measurements of $WH$ and $ZH$ production in the $H\to b\bar{b}$ decay channel in $pp$ collisions at 13 TeV with the ATLAS detector
• Validity of SMEFT studies of VH and VV Production at NLO
• Measurement of the associated production of a Higgs boson decaying into $b$-quarks with a vector boson at high transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Constraining the CP structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis
• Indirect $\mathcal{C}\mathcal{P}$ probes of the Higgs-top-quark interaction: current LHC constraints and future opportunities
• ZH production in gluon fusion at NLO in QCD
• Combined SMEFT interpretation of Higgs, diboson, and top quark data from the LHC
• The anomalous $Zb\bar{b}$ couplings: From LEP to LHC
• Probing composite Higgs boson substructure at the HL-LHC
• Sensitivity reach on anomalous Higgs couplings via triphoton production for the post-LHC circular high-energy hadron colliders
• Soft gluon resummation for gluon fusion $ZH$ production
• Experimental summary: QCD session of the 54th Rencontres de Moriond (Moriond QCD 2019)
• Searches for new interactions within the SMEFT framework at present and future colliders
• $VH+\text{jet}$ production in hadron-hadron collisions up to order ${\alpha }_s^3$ in perturbative QCD
• Tagging the Higgs boson decay to bottom quarks with colour-sensitive observables and the Lund jet plane