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Structure of Lambda(1405) and chiral dynamics

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	Jido, D.; Oller Berber, José Antonio; Oset Báguena, Eulogio Perfil; Ramos Gómez, Àngels; Meissner, Ulf-G.
	This document is a artículoDate2005
	Este documento está disponible también en : http://hdl.handle.net/10550/46943
	We report on a recent theoretical work on the structure of the Lambda(1405) resonance within a chiral unitary approach, in which the resonance is dynamically generated in meson-baryon scattering. Studying the analytic structure of the scattering amplitude, we have found that there are two poles lying around energies of Lambda(1405) with different widths and couplings to the meson-baryon states. We discuss reactions to conform the double pole structure in experiment and elastic K^- p scattering at low energies.
	Jido, D. Oller Berber, José Antonio Oset Báguena, Eulogio Ramos Gómez, Àngels Meissner, Ulf-G. 2005 Structure of Lambda(1405) and chiral dynamics Nuclear Physics A 755 669C 672C
	http://dx.doi.org/10.1016/j.nuclphysa.2005.03.082