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

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

2004-01-26

arxiv.org/abs/nucl-th/0401051v2

Phys.Lett.B593:75-81,2004

Physics

Nuclear Physics

Nuclear Theory

13 pages, 8 figures, 2 tables

Scientific paper

10.1016/j.physletb.2004.04.065

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

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