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Título

The role of the Λ(1405) in the pp -> pK(+)Λ(1405) reaction

Autor Geng, Li Sheng; Oset, Eulogi
Palabras clave Kaon-nucleon interactions
Chiral dynamics
Partial wave
Scattering
Resonance
[PACS] Hadron-induced low- and intermediate-energy reactions and scattering (energy ≤ 10 GeV)
[PACS] Decays of baryons
[PACS] Hyperons
Fecha de publicación dic-2007
EditorSpringer
Società Italiana di Fisica
Citación European Physical Journal A 34(4): 405-412 (2007)
ResumenWe 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.
Descripción 8 pages, 8 figures.-- PACS nrs.: 13.75.-n, 13.30.-a, 14.20.Jn.-- ISI Article Identifier: 000253951300007.-- ArXiv pre-print available at: http://arxiv.org/abs/0707.3343
Versión del editorhttp://dx.doi.org/10.1140/epja/i2008-10518-5
URI http://hdl.handle.net/10261/9216
DOI10.1140/epja/i2008-10518-5
ISSN1434-6001
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