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Photoproduction of $K^*$ for the study of $Λ(1405)$

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

The photo-induced $K^*$ vector meson production is investigated for the study of the $Λ(1405)$ resonance. This reaction is particularly suited to the isolation of the second pole in the $Λ(1405)$ region which couples dominantly to the $\bar K N$ channel. We obtain the mass distribution of the $Λ(1405)$ which peaks at 1420 MeV, and differs from the nominal one. Combined with several other reactions, like the $π^- p \to K^0 πΣ$ which favours the first pole, this detailed study will reveal a novel structure of the $Λ(1405)$ state.

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T. Hyodo, A. Hosaka, M. J. Vicente Vacas, E. Oset. 2004-04-17. Photoproduction of $K^*$ for the study of $Λ(1405)$. https://doi.org/10.1016/j.physletb.2004.04.065

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