Heidelberg 2022 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 92: Higgs Boson: Extended Models 3

T 92.4: Vortrag

Donnerstag, 24. März 2022, 17:00–17:15, T-H23

Combination of Higgs boson measurements using Simplified Template Cross Sections with interpretations in the κ-framework at the ATLAS experiment — •Joshua Clercx — Universität Hamburg/DESY, Hamburg, Germany

In the past, the standard model (SM) has been very successful in explaining and predicting a wide range of phenomena, but currently there are clear indications that not everything is described by the SM. 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 and decay channels. 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. The measurements can be interpreted in the κ-framework as a test of the SM coupling values of the Higgs boson to other SM particles. What will be presented are results from the most recent combination from the autumn of 2021, which is based on analyses of 13 TeV data with an integrated luminosity of up to 139 fb⁻¹.