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The role of the Lambda(1405) in the pp -> pK(+)Lambda(1405) reaction
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The role of the Lambda(1405) in the pp -> pK(+)Lambda(1405) reaction
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| Geng, Li Sheng; Oset Báguena, Eulogio | |||
| Aquest document és un/a article, creat/da en: 2007 | |||
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| We report a theoretical study of the pp -> pK(+)Λ(1405) reaction, which was recently investigated at COSY-Jülich by using a 3.65 GeV/c circulating proton beam incident on an internal hydrogen target. The reaction is driven by single-kaon exchange, single-pion exchange, and single-rho exchange terms which have very different shapes due to the two-pole structure of the Λ(1405) and the presence of background terms. The shape for the sum of the three contributions, as well as the total cross-section, are consistent with present data within experimental and theoretical uncertainties, using reasonable form factors for the meson-baryon vertices. | |||
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