N* resonances from K$\Lambda$Λ amplitudes in sliced bins in energy
Abstract.The two reactions $\gamma p\rightarrow K^{+}\Lambda$γp→K+Λ and $\pi^{-} p\rightarrow K^{0}\Lambda$π-p→K0Λ are analyzed to determine the leading photoproduction multipoles and the pion-induced partial wave amplitudes in slices of the invariant mass. The multipoles and the partial-wave amplitudes are simultaneously fitted in a multichannel Laurent+Pietarinen model (L+P model), which determines the poles in the complex energy plane on the second Riemann sheet close to the physical axes. The results from the L+P fit are compared with the results of an energy-dependent fit based on the Bonn-Gatchina (BnGa) approach. The study confirms the existence of several poles due to nucleon resonances in the region at about 1.9 GeV with quantum numbers $J^{P} = 1/2^{+}, 3/2^{+}, 1/2^{-}, 3/2^{-}, 5/2^{-}$JP=1/2+,3/2+,1/2-,3/2-,5/2-.