Fit to the invariant mass distribution of $\mathrm{D}^0$ candidates in the 3.5 < $p_{\mathrm{T}}$ < 4 $\mathrm{GeV}/c$ interval, in pp collisions at $\sqrt{s} = 13.6\ \mathrm{TeV}$, reconstructed in the $\mathrm{D}^0 \rightarrow \mathrm{K^{-}\pi^{+}}$ decay channel. An asymmetric double crystal ball was used to describe the signal, and a third-degree polynomial was used to describe the combinatorial background. The correlated backgrounds and reflected signals are described by templates taken from MC.