Measurements of $\textit{WH}$ and $\textit{ZH}$ production with Higgs boson decays into bottom quarks and direct constraints on the charm Yukawa coupling in 13 TeV $\textit{pp}$ collisions with the ATLAS detector

A study of the Higgs boson decaying into bottom quarks ($\textit{H}$ → ) and charm quarks ($\textit{H}$ → ) is performed, in the associated production channel of the Higgs boson with a $\textit{W}$ or $\textit{Z}$ boson, using 140 fb of proton-proton collision data at = 13 TeV collected by the ATLAS detector. The individual production of $\textit{WH}$ and $\textit{ZH}$ with $\textit{H}$ → is established with observed (expected) significances of 5$\textit{.}$3 (5$\textit{.}$5) and 4$\textit{.}$9 (5$\textit{.}$6) standard deviations, respectively. Differential cross-section measurements of the gauge boson transverse momentum within the simplified template cross-section framework are performed in a total of 13 kinematical fiducial regions.