Improvements in the measurements of Higgs boson's Yukawa coupling to b- & c-quarks in ATLAS

This proceeding details improvements for measuring the Higgs boson’s coupling to b- and c-quarks at the ATLAS experiment, focusing on the associated production with a vector boson. The analysis relies largerly on the performance of the algorithms devoted to the identification of b- and c-jets, referred to as flavor tagging algorithms. A new transfomer model algorithm,GN2, has recently been employed by the ATLAS collaboration, significantly improving flavor tagging performance compared to previous approaches. Preliminary studies show a 11% to 16% improvement in the analysis sensitivity for the measurment of the $H \to b\bar{b}$ coupling and 45% to 56% for the search of the $H\to c\bar{c}$ coupling.