Study of the Lambda-proton mass peak in Kaon-Deutron reaction at 1.45 and 1.65 GeV energies

In this paper, we investigated the produced cusp in the Λ0 p  invariant mass spectrum from the Κ-d→ Λ0 pπ- reaction at kenergies of 1.45 and 1.65 GeV. According to these calculations the peak of spectrum was around MΛp=2130 MeV /c2 and the width was Γ=13MeV. To interpret this cusp we applied a coupled-channel treatment for the two decay processes Λp→Λp and ΣN→Λp. The results of the inelastic channel (ΣN→Λp) showed more consistency to the experimental data