Characterising the Higgs boson with ATLAS data from Run 2 of the LHC

Abstract

The Higgs boson was discovered by the ATLAS and CMS Collaborations in 2012 using data from Run 1 of the Large Hadron Collider (2010$-$2012). In Run 2 (2015$-$2018), about 140 fb${}^{-1}$ of proton$-$proton collisions at a centre-of-mass energy of 13 TeV were collected by the ATLAS experiment. This review presents the most important Run 2 results obtained by the ATLAS Collaboration regarding the properties of the Higgs boson and its interactions with other particles. The performed studies significantly enhance the understanding of the Higgs boson, while hunting for deviations from the predictions of the Standard Model of particle physics.

82 pages in total, author list starting page 65, 34 figures, 3 tables, published by Physics Reports. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2023-11

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• Local Baryon Number at the LHC
• High Energy Vector Boson Scattering in Four-Body Final States to Probe Higgs Cubic, Quartic, and HEFT interactions
• Transforming jet flavour tagging at ATLAS
• Evidence for the dimuon decay of the Higgs boson in pp collisions with the ATLAS detector
• Data-Driven High-Dimensional Statistical Inference with Generative Models
• Exotic $h\to Za$ Higgs decays into $\tau$ leptons
• Development of systematic uncertainty-aware neural network trainings for binned-likelihood analyses at the LHC
• Scalar leptoquark contributions to the $gg\to Zh$ process
• Sensitivity of $W$-boson measurements to low-mass right-handed neutrinos