Search for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ charmless 4-body decays at LHCb

The Run I data recorded by the LHCb experiment are analyzed to search for fully charged charmless four-body decays of $b$-flavoured neutral baryons $\Lambda_{b}^{0}$ or $\Xi_{b}^{0}$ . This poster presents the analysis to establish the signals, specially the simultaneous fit model strategy. The proton and antiproton spectra are added in order to allow the determinination of the signal decay branching fractions which are still to be determined. The individual proton and antiproton spectra are kept blinded for the purpose of the forthcoming $\Delta A_{CP}$ measurements of the modes of interest.