Reports

THE INDUSTRIAL CHALLENGE: Foreign particles (inclusions) in steel, originating from early stages in the steel production process may reduce mechanical properties. As a world leading steel producer SSAB constantly strives to improve the cleanliness of the steel and one key is improved methods for the detection and quantification of inclusions [...]

A combination of measurements of Higgs boson production cross sections and branching fractions is presented. The combination is based on the analyses of the Higgs boson decay modes $H \to \gamma\gamma$, $ZZ^\ast$, $WW^\ast$, $\tau\tau$, $b\bar{b}$, $\mu\mu$, and searches for decays into invisible final states. [...]

The computing and software project in ATLAS exists to enable the Collaboration to fully exploit the LHC physics programme, while respecting the budgetary constraints associated with computing. This Conceptual Design Report summarises the current approaches being taken and plans being developed within ATLAS to meet the challenges of the HL-LHC era. [...]

Inclusive, differential and production mode cross sections of the Higgs boson are measured in the $H \to ZZ^{*} \to 4\ell$ decay channel. Additionally, cross sections are measured for the main production modes in several exclusive regions of the Higgs boson production phase space. [...]

Combined measurements of the total and differential cross sections of Higgs boson production are performed with proton-proton collisions recorded by the ATLAS detector at the Large Hadron Collider. The data correspond to an integrated luminosity of 139 $\textrm{fb}^{-1}$ produced at a center-of-mass energy of 13 TeV. [...]

Fiducial integrated and differential cross sections for the production of the Higgs boson decaying to two photons are measured using 139 fb$^{-1}$ of proton--proton collision data recorded at $\sqrt{s}=13$ TeV by the ATLAS experiment at the Large Hadron Collider. The inclusive production cross section in a fiducial region closely matching the experimental selection of the photons is measured to be 65.2 $\pm$ 7.1 fb, which is in good agreement with the Standard Model prediction of 63.6 $\pm$ 3.3 fb. [...]