A search for ${\Xi }_{cc}^{++}\to D^{+}p{K}^{-}{\pi }^{+}$ decays

A search for the ${\Xi }_{cc}^{++}$ baryon through the $\it{\Xi}^{++}{cc} \rightarrow D^{+} p K^{-} \pi^{+}$ decay is performed with a data sample corresponding to an integrated luminosity of 1.7 ${\mathrm{f}\mathrm{b}}^{-1}$ recorded by the LHCb experiment in $pp$ collisions at a centre-of-mass energy of 13 TeV. No significant signal is observed in the mass range from the kinematic threshold of the decay to 3800 $\mathrm{M}\mathrm{e}\mathrm{V}\mathrm{/}{c}^2$. An upper limit is set on the ratio of branching fractions $$\mathcal{R}$ = \frac{$\mathcal{B}$(\it{\Xi}^{++}{cc} \rightarrow D^{+} p K^{-} \pi^{+})}{$\mathcal{B}$(\it{\Xi}^{++}{cc} \rightarrow \Lambda^{+}{c} K^{-} \pi^{+}\pi^{+})}$with$$\mathcal{R}$ < 1.7 \hspace{2pt} (2.1) \times 10^{-2}$ at the 90% (95%) confidence level at the known mass of the ${\Xi }_{cc}^{++}$ state.