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

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

2004-04-13

arxiv.org/abs/nucl-th/0404031v1

Physics

Nuclear Physics

Nuclear Theory

revtex4, 4 pages, 5 figures, 1 table, Invited talk at the YITP workshop on ``Multi-quark Hadrons; Four, Five and More?'', Feb.

Scientific paper

We investigate the photoproduction of $K^*$ vector meson for the study of the $\Lambda(1405)$ resonance. The invariant mass distribution of $\pi\Sigma$ shows a different shape from the nominal one, peaking at 1420 MeV. This is considered as a consequence of the double pole structure of $\Lambda(1405)$, predicted in the chiral unitary model. Combined with other reactions, such as $\pi^- p \to K^0 \pi\Sigma$, experimental confirmation of this fact will reveal a novel structure of the $\Lambda(1405)$ state.

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