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- W2156833108 abstract "The K- p --> pi0pi0sigma0 reaction is studied within a chiral unitary model. The distribution of pi0sigma0 states forming the lambda(1405) shows, in agreement with a recent experiment, a peak at 1420 MeV and a relatively narrow width of gamma = 38 MeV. The mechanism for the reaction is largely dominated by the emission of a pi0 prior to the K- p interaction leading to the lambda(1405). This ensures the coupling of the lambda(1405) to the K- p channel, thus maximizing the contribution of the second state found in chiral unitary theories, which is narrow and of higher energy than the nominal lambda(1405). This is unlike the pi- p --> K0pisigma reaction, which gives more weight to the pole at lower energy and with a larger width. The data of these two experiments, together with the present theoretical analysis, provide firm evidence of the two-pole structure of the lambda(1405)." @default.
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- W2156833108 date "2005-07-28" @default.
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- W2156833108 title "Evidence for the Two-Pole Structure of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>Λ</mml:mi><mml:mo stretchy=false>(</mml:mo><mml:mn>1405</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:math>Resonance" @default.
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- W2156833108 doi "https://doi.org/10.1103/physrevlett.95.052301" @default.
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