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Study of $Λ(1405)$ in photoproduction of $K^*$

T. Hyodo·A. Hosaka·M. J. Vicente Vacas·E. Oset
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Abstract

We 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.

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T. Hyodo, A. Hosaka, M. J. Vicente Vacas, E. Oset. 2004-04-13. Study of $Λ(1405)$ in photoproduction of $K^*$. https://arxiv.org/abs/nucl-th/0404031

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