Search for $CP$ violation in ${\mathrm{\Xi }}_c^{+}\to p{K}^{-}{\pi }^{+}$ decays using model-independent techniques

A first search for $CP$ violation in the Cabibbo-suppressed ${\mathrm{\Xi }}_c^{+}\to p{K}^{-}{\pi }^{+}$ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of $3.0\mathrm{f}{\mathrm{b}}^{-1}$, and collected by the LHCb experiment at centre-of-mass energies of $7$ and $8\mathrm{T}\mathrm{e}\mathrm{V}$. The data are consistent with the hypothesis of no $CP$ violation.