2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82211We investigate the photoproduction of $K^*$ vector meson for the study of the $Λ(1405)$ resonance. The invariant mass distribution of $πΣ$ shows a different shape from the nominal one, peaking at 1420 MeV. This is considered as a consequence of the double pole structure of $Λ(1405)$, predicted in the chiral unitary model. Combined with other reactions, such as $π^- p \to K^0 πΣ$, experimental confirmation of this fact will reveal a novel structure of the $Λ(1405)$ state.revtex4, 4 pages, 5 figures, 1 table, Invited talk at the YITP workshop on ``Multi-quark Hadrons; Four, Five and More?'', Feb. 17-19, 2004, Kyoto, JapanNuclear TheoryHigh Energy Physics - Phenomenologytext