  Higgs boson production via gluon-gluon fusion is measured in the $WW^{\ast}
\to e\nu\mu\nu$ decay channel. The dataset utilized corresponds to an
integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector from
$\sqrt{s}=13$ TeV proton-proton collisions delivered by the Large Hadron
Collider between 2015 and 2018. Differential cross sections are measured in a
fiducial phase space restricted to the production of at most one additional
jet. The results are consistent with Standard Model expectations, derived using
different Monte Carlo generators.
