Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 55: Bosonic and Rare Higgs decays

T 55.3: Talk

Wednesday, March 17, 2021, 16:30–16:45, Te

Combination of Higgs boson measurements using Simplified Template Cross Sections at the ATLAS experiment — •Joshua Clercx — Hamburg University, Hamburg, Germany — DESY, Hamburg, Germany

Experimental measurements of certain high energy physics parameters could show deviations from the theoretical predictions, which would indicate the existence of physics beyond the standard model (BSM). Depending on where these deviations are found, it also gives some insight into which BSM physics theories are interesting to further investigate. Measurements in the Higgs sector are especially interesting, as there are many opportunities to detect BSM effects here. The most precise measurements in the Higgs sector are obtained by combining measurements of cross sections of different Higgs boson production processes in several Higgs boson decays. This is typically done in the Simplified Template Cross Sections (STXS) framework: measurements of cross sections of mutually exclusive regions of phase space, defined per production process, are combined. What will be presented is the most recent combination from the summer of 2020, which is based on analyses of 13 TeV data.