  We study the repulsive Fermi polaron in a two-component, two-dimensional
system of fermionic atoms inspired by the results of a recent experiment with
$^{173}$Yb atoms [N. Darkwah Oppong \textit{et al.}, Phys. Rev. Lett.
\textbf{122}, 193604 (2019)]. We use the diffusion Monte Carlo method to report
properties such as the polaron energy and the quasi-particle residue that have
been measured in that experiment. To provide insight on the quasi-particle
character of the problem, we also report results for the effective mass. We
show that the effective range, together with the scattering length, is needed
in order to reproduce the experimental results. Using different model
potentials for the interaction between the Fermi sea and the impurity, we show
that it is possible to establish a regime of universality, in terms of these
two parameters, that includes the whole experimental regime. This illustrates
the relevance of quantum fluctuations and beyond mean-field effects to
correctly describe the Fermi polaron problem.
