Speaker
Description
The search for the most dominant decay mode of the Higgs boson, $H→b\bar{b}$, proved to be an elusive and challenging due to the low signal-to-background ratio, and a diverse range of backgrounds arising from multiple Standard Model processes. The use of the production in association with a W or Z boson, while reducing the overall rate of the process, allowed on the other hand to use topologies with better sensitivity, ultimately leading to the observation of the $H→b\bar{b}$ process, and the measurement of its cross section in various bins of the transverse momentum of the accompanying vector boson. The poster presents measurements of the $WH$ and $ZH$ production, with the $W$ or $Z$ boson decaying into charged leptons (electrons or muons, including those produced from the leptonic decay of a tau lepton), in the $H→b\bar{b}$ decay channel in pp collisions at 13 TeV, corresponding to an integrated luminosity of 139 fb$^{−1}$, with the ATLAS detector are presented.
