Lambda - proton correlation in pion-induced reactions at 1.7 GeV/c

World data for elastic Λ - proton scattering over a wide range of Λ momenta are quite scarce. In order to provide a better theoretical description, new constraints to improve the parametrization of cross-section is needed. In this context the inclusive Λ momenta spectrum aside with the angular correlation between proton and Λ is studied in pion-nucleon reactions (π^- + A, A = C, W) at p_π^- = 1.7 GeV/c with the HADES detector at GSI. After the Λ has been produced, it interacts with the surrounding nucleons and eventually scattering occurs. The latter can be characterized by a large relative momenta between the Λ and the protons, allowing us to investigate the short distance interactions. We report on the analysis of the collected statistics and comparison to transport model to test the sensitivity of the data to different assumption on the short range Lambda-nucleon interaction.